CN114015400B - Silane modified polyether sealant for fabricated building and preparation method thereof - Google Patents
Silane modified polyether sealant for fabricated building and preparation method thereof Download PDFInfo
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- CN114015400B CN114015400B CN202111345066.0A CN202111345066A CN114015400B CN 114015400 B CN114015400 B CN 114015400B CN 202111345066 A CN202111345066 A CN 202111345066A CN 114015400 B CN114015400 B CN 114015400B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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Abstract
The invention relates to a building material and a preparation process thereof, in particular to a silane modified polyether sealant for an assembly building and a preparation method thereof, wherein the raw materials of the silane modified polyether sealant comprise modified silane polyether resin, a plasticizer, a silane coupling agent, a viscosity promoter, a water removal agent, dibutyltin dilaurate silicate and an antioxidant; the preparation method comprises the steps of weighing raw materials in proportion, filling the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant in the raw materials into a stirring device for fully mixing, adding the water removing agent and the adhesion promoter into a pre-reactant obtained in the stirring device, mixing and dehydrating; adding the silane coupling agent into a stirring device, uniformly stirring the silane coupling agent and the intermediate reactant, and defoaming the silane coupling agent and the intermediate reactant in a micro-pressure environment to obtain a silane modified polyether sealant product.
Description
Technical Field
The invention relates to a building material and a preparation process thereof, in particular to silane modified polyether sealant for an assembly type building and a preparation method thereof.
Background
The silane modified polyether sealant is a high-performance environment-friendly sealant prepared by taking silyl-terminated polyether (taking polyether as a main chain and using siloxane to terminate at two ends) as a basic polymer, has the advantages of polyurethane sealant and silicone sealant, overcomes the defects of respective performances, has excellent mechanical strength, coating property and stain resistance, does not contain isocyanate and organic solvent in the product, and is a main development direction of novel elastic sealant at home and abroad.
The silane modified polyether sealant is mainly applied to the fields of bonding, joint filling, joint sealing, water proofing, reinforcing and the like of building engineering and decoration; in recent years, along with the deepening of people's understanding of the advantages of silane modified polyether sealants, the application of the silane modified polyether sealants in the industrial fields of refrigerated vehicles, containers, elevators and the like is expanding. The silane modified polyether sealant does not contain formaldehyde and isocyanate, has the outstanding environmental protection characteristics of no solvent, no toxicity, no odor, low VOC (volatile organic compounds) release and the like, and is compatible with the environment and human body; the coating is suitable for most building base materials, has good construction performance, adhesion, durability and weather resistance, particularly has non-pollution performance and paintability, and is widely applied to building decoration.
However, the existing silane modified polyether sealant has the problems of poor ductility and complex preparation process, and particularly in the construction process, a large amount of time is consumed for preparation, so that the construction efficiency is not improved.
Disclosure of Invention
The invention aims to provide a silane modified polyether sealant for an assembly type building and a preparation method thereof, and aims to solve the problem of poor ductility of the existing silane modified polyether sealant in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
100-180 parts of modified silane polyether resin, 30-50 parts of plasticizer, 1-5 parts of silane coupling agent, 8-16 parts of adhesion promoter, 50-75 parts of water scavenger, 0.5-2 parts of dibutyltin dilaurate and 0.5-2 parts of antioxidant.
The invention further defines the scheme as follows: the raw materials comprise the following components in percentage by mass:
120-160 parts of modified silane polyether resin, 35-45 parts of plasticizer, 2-4 parts of silane coupling agent, 10-14 parts of adhesion promoter, 57-68 parts of water removing agent, 1-1.7 parts of dibutyltin dilaurate and 1-1.5 parts of antioxidant.
The invention further defines the scheme as follows: the raw materials comprise the following components in percentage by mass:
140 parts of modified silane polyether resin, 40 parts of plasticizer, 3 parts of silane coupling agent, 12 parts of adhesion promoter, 65 parts of water removing agent, 1.3 parts of dibutyltin dilaurate and 1.3 parts of antioxidant.
A preparation method of silane modified polyether sealant for fabricated buildings comprises the following steps:
weighing the raw materials in proportion, and filling the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant in the raw materials into a stirring device for fully mixing to obtain a pre-reactant;
step two; adding a water removing agent and a viscosity promoter into the pre-reactant obtained in the stirring device, and mixing and dehydrating again to obtain an intermediate reactant;
and step three, adding the silane coupling agent into a stirring device, uniformly stirring the silane coupling agent and the intermediate reactant, and defoaming in a micro-pressure environment to obtain a silane modified polyether sealant product.
The invention further defines the scheme as follows: the stirring device comprises a frame body with supporting legs at four corners and a preparation barrel fixed on the frame body, wherein an installation part fixed with the frame body is arranged on one side of the preparation barrel, a motor is arranged on one side of the installation part, and a hopper used for adding raw materials into the preparation barrel is arranged on the other side of the installation part;
a blending component for mixing the raw materials added to the bottom of the preparation barrel is rotatably mounted in the preparation barrel, penetrates through the top of the preparation barrel and is in sealed rotary connection with the preparation barrel, and the top of the blending component is connected with the output end of the motor;
the hopper is communicated with the interior of the preparation barrel through a material pipe, a plugging mechanism is arranged at the joint of the material pipe and the preparation barrel and is connected with the blending assembly through a movable structure, the movable structure drives the movable structure to move towards the bottom of the preparation barrel from top to bottom in the process of mixing raw materials by the blending assembly, the raw materials in the hopper are discharged into the preparation barrel when the movable structure moves to the plugging mechanism, and the preparation barrel is sealed after the movable structure crosses the plugging mechanism;
the three hoppers are respectively communicated with the preparation barrel through three material pipes, and the joints of the three material pipes and the preparation barrel are arranged from top to bottom.
The invention also provides a scheme as follows: the blending component comprises a screw rod penetrating through the center of the top of the preparation barrel and in sealed rotary connection with the preparation barrel, a stirring shaft fixed at the lower end of the screw rod, and a plurality of circles of mixing blades arranged on the outer wall of the stirring shaft along the circumference;
the upper end of the screw rod is connected with the output end of the motor; the movable structure is connected with the screw rod, a discharge outlet is formed in the bottom of the preparation barrel, and a detachable end cover is arranged at the discharge outlet in a sealed mode.
The invention further defines the scheme as follows: the movable structure comprises a threaded sleeve in threaded connection with the screw rod, a supporting rod fixed on one side of the threaded sleeve close to the hopper, a sliding block fixed at the end part of the supporting rod, and a sliding chute which is arranged on the inner wall of the preparation barrel and is in sliding fit with the sliding block;
the upper portion and the lower portion of the supporting rod are respectively provided with a movable contact finger, the top wall and the lower portion of the preparation barrel are respectively provided with a waterproof switch, the waterproof switches are connected with the motor, and the two waterproof switches and the two movable contact fingers are coaxially arranged.
The invention also provides a scheme as follows: the plugging mechanism comprises a fixed sleeve which penetrates through the side wall of the preparation barrel and is fixedly connected with the side wall, a stopper which is fixed in the material pipe, a plugging piece which is elastically connected with the stopper through a spring, a bracket which is arranged in the fixed sleeve in a sliding manner and is fixed with the plugging piece, and a roller which is rotatably arranged at one end of the bracket, which is close to the preparation barrel;
the sliding groove is provided with a through hole for the roller to pass through, the plugging piece is in sealing fit with the inner wall of the fixing sleeve, and the end part of the material pipe is in sealing fit with the fixing sleeve.
The invention also provides a scheme as follows: the preparation barrel is also internally provided with a pressure regulating assembly, the pressure regulating assembly comprises a pressure regulating box fixed in the preparation barrel, the lower part of an opening at the upper part of the pressure regulating box is sealed, a sealing plug is arranged in the pressure regulating box in a sealing and sliding manner, one side of the threaded sleeve, which is opposite to the support rod, is connected with one end of a traction wire, and the other end of the traction wire penetrates through the opening at the upper part of the pressure regulating box and is connected with the sealing plug;
the top of pressure regulating box be provided with the pulley of rotating the connection of the inner wall of preparation bucket, the traction wire with the pulley roll cooperation, just the bottom of pressure regulating box is through connecting valve and trachea one end intercommunication, the trachea other end is in with the installation the seal valve at preparation barrel top is connected.
Compared with the prior art, the invention has the beneficial effects that: the sealant prepared from the raw materials has good ductility, high tensile strength and bonding strength, is convenient for quick repair, increases the wettability of the sealant on the surface of a base material, has good storage stability and has a certain flame retardant effect;
according to the preparation method, the whole preparation process of the silane modified polyether sealant can be completed through one stirring device, reactants do not need to be transferred in the middle, the operation is simple, and the preparation of the sealant is more convenient and faster during construction;
use the device not only to have the function of adding different raw materials to the preparation bucket stage by stage, can will prepare the bucket internal seal moreover when not adding the raw materials, constantly increase the pressure in the preparation bucket when sealed preparation bucket, eliminate the produced bubble of mixing subassembly stirring, have mechanical defoaming function under the prerequisite that does not need additionally to increase the defoaming agent.
Drawings
FIG. 1 is a schematic structural diagram of a stirring apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of the internal structure of fig. 1 with the rack body and the preparation barrel removed.
Fig. 3 is a schematic diagram of a screw rod and a movable structure in the embodiment of the invention.
Fig. 4 is a schematic view of the fitting of the preparation barrel and the fixing sleeve in the embodiment of the present invention.
Fig. 5 is a matching relationship diagram of the plugging mechanism and the movable structure in the embodiment of the invention.
FIG. 6 is a schematic diagram of the positions of the through holes and the rollers in the embodiment of the present invention.
Fig. 7 is a half-sectional view of the material pipe and the plugging mechanism in the embodiment of the invention.
Fig. 8 is a partial enlarged view of a portion a in fig. 7.
Fig. 9 is a schematic view of the connection of the adjustment assembly and the threaded sleeve in an embodiment of the present invention.
Fig. 10 is a schematic view of the sealing plug of fig. 9 removed from the pressure regulating box.
In the figure: 1-a frame body; 2-preparing a barrel; 3-a motor; 4-a mounting member; 5-a screw mandrel; 6-stirring shaft; 7-mixing blades; 8-thread insert; 9-a strut; 10-a movable stylus; 11-a waterproof switch; 12-a slide block; 13-a chute; 14-perforating; 15-fixing the sleeve; 16-a material pipe; 17-a hopper; 18-a roller; 19-drawing wires; 20-a sealing plug; 21-pressure regulating box; 22-trachea; 23-a connecting valve; 24-a sealing valve; 25-a pulley; 26-a scaffold; 27-a closure; 28-a spring; 29-flight.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 10, as an embodiment of the present invention, a silane modified polyether sealant for assembly type buildings comprises the following raw materials by mass:
100 parts of modified silane polyether resin, 30 parts of plasticizer, 1 part of silane coupling agent, 8 parts of adhesion promoter, 50 parts of water removing agent, 0.5 part of dibutyltin dilaurate and 0.5 part of antioxidant;
the viscosity promoter comprises one or two of liquid rosin resin or terpene resin; the modified silane polyether resin is one or two of ethyl triethyl silane modified polyether or propyl trimethoxy silane modified polyether.
In the embodiment, the sealant prepared from the raw materials has good ductility, high tensile strength and bonding strength, is convenient for quick repair, increases the wettability of the sealant on the surface of the base material, has good storage stability, and has a certain flame retardant effect.
As another embodiment of the invention, the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
120 parts of modified silane polyether resin, 35 parts of plasticizer, 2 parts of silane coupling agent, 10 parts of adhesion promoter, 57 parts of water removing agent, 1 part of dibutyltin dilaurate and 1 part of antioxidant.
As another embodiment of the invention, the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
140 parts of modified silane polyether resin, 40 parts of plasticizer, 3 parts of silane coupling agent, 12 parts of adhesion promoter, 65 parts of water removing agent, 1.3 parts of dibutyltin dilaurate and 1.3 parts of antioxidant.
As another embodiment of the invention, the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
160 parts of modified silane polyether resin, 45 parts of plasticizer, 4 parts of silane coupling agent, 14 parts of adhesion promoter, 68 parts of water removing agent, 1.7 parts of dibutyltin dilaurate and 1.5 parts of antioxidant.
As another embodiment of the invention, the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
180 parts of modified silane polyether resin, 50 parts of plasticizer, 5 parts of silane coupling agent, 16 parts of adhesion promoter, 75 parts of water removing agent, 2 parts of dibutyltin dilaurate and 2 parts of antioxidant.
The invention also provides a preparation method of the silane modified polyether sealant for the fabricated building, which comprises the following steps:
weighing the raw materials in proportion, and filling the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant in the raw materials into a stirring device for fully mixing to obtain a pre-reactant;
step two; adding a water removing agent and a viscosity promoter into the pre-reactant obtained in the stirring device, mixing again, and dehydrating to obtain an intermediate reactant;
and step three, adding the silane coupling agent into a stirring device, uniformly stirring the silane coupling agent and the intermediate reactant, and defoaming in a micro-pressure environment to obtain a silane modified polyether sealant product.
In the embodiment, the preparation method can complete the whole preparation process of the silane modified polyether sealant through one stirring device, transfer of reactants is not needed in the middle, the operation is simple, and the preparation of the sealant is more convenient and faster during construction.
As another embodiment of the present invention, the stirring apparatus includes a frame body 1 having supporting legs at four corners and a preparation barrel 2 fixed on the frame body 1, wherein a mounting member 4 fixed to the frame body 1 is provided at one side of the preparation barrel 2, a motor 3 is installed at one side of the mounting member 4, and a hopper 17 for adding raw materials into the preparation barrel 2 is provided at the other side;
a blending component for mixing the raw materials added at the bottom of the preparation barrel 2 is rotatably arranged in the preparation barrel 2, penetrates through the top of the preparation barrel 2 and is in sealed rotary connection with the preparation barrel, and the top of the blending component is connected with the output end of the motor 3;
It should be noted that, there are three hoppers 17, which are respectively communicated with the preparation barrel 2 through three material pipes 16, the joints of the three material pipes 16 and the preparation barrel 2 are arranged from top to bottom, and the three hoppers 17 are fixed on the mounting member 4 through a truss.
In the embodiment, when the blending assembly works, the movable structure is firstly driven to contact with the upper plugging mechanism, and the upper plugging mechanism is opened, so that the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant in the material pipe 16 and the hopper 17 corresponding to the upper plugging mechanism are filled into the preparation barrel 2;
after the movable structure is separated from the upper plugging mechanism, the hopper 17 loaded with the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant and the material pipe 16 are isolated from the preparation barrel 2, the movable structure moves downwards continuously, and the blending assembly stirs the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant which are loaded into the preparation barrel 2 to prepare a pre-reactant;
when the movable structure moves downwards to the middle plugging mechanism, the hopper 17 filled with the water removing agent and the adhesion promoter and the material pipe 16 are communicated with the preparation barrel 2, and at the moment, the water removing agent and the adhesion promoter are filled into the preparation barrel 2 and are contacted with a pre-reactant obtained by uniformly mixing in the preparation barrel 2; after the movable structure is separated from the blocking mechanism at the middle part, the hopper 17 filled with the water removing agent and the adhesion promoter and the material pipe 16 are isolated from the preparation barrel 2, the movable structure moves downwards continuously, and the mixing component stirs the water removing agent and the adhesion promoter filled in the preparation barrel 2 and the pre-reactant to prepare an intermediate reactant;
when the movable structure moves downwards to the lower plugging mechanism, the hopper 17 and the material pipe 16 filled with the silane coupling agent are communicated with the preparation barrel 2, the silane coupling agent enters the preparation barrel 2, the blending assembly continues to work, the movable structure is separated from the lower plugging mechanism, the silane coupling agent is fully mixed with an intermediate reactant, and finally a silane modified polyether sealant product is obtained.
As another embodiment of the present invention, the blending component comprises a screw rod 5 penetrating through the center of the top of the preparation barrel 2 and connected with the preparation barrel in a sealing and rotating manner, a stirring shaft 6 fixed at the lower end of the screw rod 5, and a plurality of circles of mixing blades 7 circumferentially arranged on the outer wall of the stirring shaft 6;
the upper end of the screw rod 5 is connected with the output end of the motor 3; the movable structure is connected with the screw rod 5, a discharge opening is formed in the bottom of the preparation barrel 2, and a detachable end cover is arranged at the discharge opening in a sealed mode.
In this embodiment, the motor 3 drives the screw rod 5 to rotate, the rotating screw rod 5 drives the stirring shaft 6 to rotate, and the stirring shaft 6 drives the mixing blade 7 to rotate, so as to stir and mix the raw materials loaded into the bottom of the preparation barrel 2.
As another embodiment of the present invention, the movable structure includes a threaded sleeve 8 screwed on the screw rod 5, a supporting rod 9 fixed on one side of the threaded sleeve 8 close to the hopper 17, a sliding block 12 fixed on the end of the supporting rod 9, and a sliding chute 13 mounted on the inner wall of the preparation barrel 2 and slidably engaged with the sliding block 12;
the upper portion and the lower portion of the supporting rod 9 are respectively provided with a movable contact finger 10, the top wall and the lower portion of the preparation barrel 2 are respectively provided with a waterproof switch 11, the waterproof switches 11 are connected with the motor 3, and the two waterproof switches 11 and the two movable contact fingers 10 are coaxially arranged.
In the embodiment, when the screw rod 5 rotates, the screw sleeve 8 and the support rod 9 are driven to move along the axial direction of the screw rod 5 under the constraint of the slide block 12 and the sliding groove 13;
it should be noted that a bidirectional switch is also installed on the motor 3, and the motor 3 is a servo motor whose output end can work in both forward and reverse directions;
when the motor 3 drives the screw rod 5 to rotate to drive the screw sleeve 8 to move downwards to the stroke end point of the screw rod 5, the movable contact finger 10 at the lower part of the supporting rod 9 is combined with the waterproof switch 11 at the lower part in the preparation barrel 2, and the motor 3 is powered off to close the motor 3; on one hand, the screw rod 5 can be prevented from driving the screw sleeve 8 and the support rod 9 to continuously move downwards to interfere with the stirring shaft 6 and the mixing blade 7 at the lower part, and on the other hand, the screw sleeve 8 can be prevented from being completely separated from the screw rod 5;
after the screw sleeve 8 moves downwards to the stroke end point of the screw rod 5, the silane modified polyether sealant in the preparation barrel 2 is prepared; the end cover can be opened to discharge the sealant in the barrel from the discharge port; if the device is to be used again, the two-way switch can be started reversely, so that the motor 3 drives the screw rod 5 to rotate reversely, the screw sleeve 8 and the supporting rod 9 are lifted upwards, when the movable contact finger 10 lifted to the upper part of the supporting rod 9 is contacted with the waterproof switch 11 on the top wall of the preparation barrel 2, the motor 3 is powered off again, and the device is restored to the initial position.
As another embodiment of the present invention, the plugging mechanism comprises a fixing sleeve 15 penetrating through and fixedly connected with the side wall of the preparation barrel 2, a stopper 29 fixed in the material pipe 16, a plugging member 27 elastically connected with the stopper 29 through a spring 28, a bracket 26 slidably arranged in the fixing sleeve 15 and fixed with the plugging member 27, and a roller 18 rotatably arranged at one end of the bracket 26 close to the preparation barrel 2;
the chute 13 is provided with a through hole 14 for the roller 18 to pass through, the plugging piece 27 is in sealing fit with the inner wall of the fixed sleeve 15, and the end part of the material pipe 16 is in sealing fit with the fixed sleeve 15.
It is noted that the cross-sectional area of the shutter 29 is smaller than the internal cross-sectional area of the pipe 16, the cross-sectional area of the support 26 is smaller than the internal cross-sectional area of the fixed sleeve 15, i.e. the shutter 29 does not block the pipe 16, while the support 26 does not block the fixed sleeve 15, the portion of the roller 18 that enters inside the preparation tub 2 through the perforation 14 being less than half its volume.
In this embodiment, when the screw sleeve 8 drives the sliding block 12 to slide in the sliding slot 13 through the supporting rod 9 and meets the roller 18, the extrusion roller 18 slides towards the inside of the fixed sleeve 15, and at this time, the roller 18 drives the bracket 26 to slide in the fixed sleeve 15 and extrudes and deform the spring 28, so that the plugging member 27 is separated from the fixed sleeve 15 and enters the material pipe 16; after the plugging piece 27 is separated from the fixing sleeve 15, the material pipe 16 is communicated with the fixing sleeve 15, and at the moment, materials flowing in the hopper 17 and the material pipe 16 can enter the preparation barrel 2 through the fixing sleeve 15 and the through hole 14;
and after the slide block 12 crosses the roller 18, the spring 28 rebounds to drive the blocking piece 27 to enter the fixed sleeve 15 again, so that the material pipe 16 and the fixed pipe 15 are sealed and separated, the roller 18 passes through the through hole 14 again through the bracket 26 to enter the preparation barrel 2, the purpose of injecting raw materials into the preparation barrel 2 in stages is achieved, and when the raw materials are not injected into the preparation barrel 2, the preparation barrel 2 is kept in a sealed state.
As another embodiment of the invention, a pressure regulating assembly is further arranged in the preparation barrel 2, the pressure regulating assembly comprises a pressure regulating box 21 fixed in the preparation barrel 2, the lower part of an opening at the upper part of the pressure regulating box 21 is sealed, a sealing plug 20 is arranged in the pressure regulating box 21 in a sealing and sliding manner, one side of the screw sleeve 8, which is opposite to the supporting rod 9, is connected with one end of a traction wire 19, and the other end of the traction wire 19 penetrates through the opening at the upper part of the pressure regulating box 21 and is connected with the sealing plug 20;
the top of pressure regulating box 21 be provided with the pulley 25 of the inner wall swivelling joint of preparation bucket 2, pull wire 19 with pulley 25 roll cooperation, just the bottom of pressure regulating box 21 is passed through connecting valve 23 and trachea 22 one end intercommunication, the trachea 22 other end is with the installation and is in the seal valve 24 at preparation bucket 2 top is connected.
In this embodiment, when the slider 12 is in contact with the uppermost roller 18, the modified silane polyether resin, the plasticizer, dibutyltin dilaurate, and the antioxidant are charged into the preparation tub 2, and then the slider 12 is separated from the upper roller 18, keeping the interior of the preparation tub 2 sealed;
after the sliding block 12 is separated from the roller 18 at the upper part, the screw rod 5 drives the stirring shaft 6 and the mixing blade 7 to continuously rotate, the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant at the bottom of the closed preparation barrel 2 are stirred, and the screw sleeve 8 which continuously moves downwards is matched with the pulley 25 through the traction wire 19 to drive the sealing plug 20 to move upwards in the pressure regulating box 21, so that the pressure in the preparation barrel 2 is gradually increased, and bubbles are prevented from being generated when the blending component stirs the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant at the bottom of the closed preparation barrel 2 to prepare a pre-reactant;
when the sliding block 12 moves downwards to contact with the roller 18 at the middle, the material pipe 16 at the middle is communicated with the interior of the preparation barrel 2, the water removal agent and the adhesion promoter enter the preparation barrel 2 through the hopper 17 and the material pipe 16 at the middle, and the compressed air in the preparation barrel 2 is discharged through the material pipe 16 at the middle and the hopper 17, so that the interior of the preparation barrel 2 is restored to the atmospheric pressure, and the sealing performance of the sealing plug 20 and the sealing piece 27 is prevented from being damaged due to the overlarge pressure in the preparation barrel 2;
when the slide block 12 moves downwards to be separated from the roller 18 at the middle, the material pipe 16 at the middle is separated from the interior of the preparation barrel 2, the screw rod 5 drives the stirring shaft 6 and the mixing blade 7 to rotate, the pre-reactant, the water removing agent and the adhesion promoter at the bottom of the closed preparation barrel 2 are stirred, the screw sleeve 8 which moves downwards continuously drives the sealing plug 20 to move upwards in the pressure regulating box 21 through the matching of the traction wire 19 and the pulley 25, the pressure in the preparation barrel 2 is gradually increased again, and bubbles generated when the pre-reactant, the water removing agent and the adhesion promoter are stirred are eliminated, so that the intermediate reactant is prepared;
when the sliding block 12 moves downwards to contact with the roller 18 at the lower part, the material pipe 16 at the lower part is communicated with the interior of the preparation barrel 2, the silane coupling agent enters the preparation barrel 2 through the hopper 17 and the material pipe 16 at the lower part, and the compressed air in the preparation barrel 2 is discharged through the material pipe 16 at the lower part and the hopper 17, so that the interior of the preparation barrel 2 is restored to the atmospheric pressure;
when the slide block 12 moves downwards to be separated from the roller 18 at the lower part, the material pipe 16 at the lower part is separated from the interior of the preparation barrel 2, the screw rod 5 drives the stirring shaft 6 and the mixing blade 7 to rotate, an intermediate reactant and a silane coupling agent at the bottom of the closed preparation barrel 2 are stirred, the screw sleeve 8 which moves downwards continuously is matched with the pulley 25 through the traction wire 19 to continuously drive the sealing plug 20 to move upwards in the pressure regulating box 21, the pressure in the preparation barrel 2 is gradually increased again, bubbles generated during stirring of the intermediate reactant and the silane coupling agent are eliminated, and finally the silane modified polyether sealant product is prepared.
In addition, during the upward movement of the sealing plug 20, the external atmosphere enters the bottom of the pressure-regulating tank 21 through the sealing valve 24 and the air tube 22 via the connecting valve 23;
when the screw sleeve 8 is reset to the upper part of the screw rod 5, because the sealing plug 20 and the inner wall of the pressure regulating tank 21 have large friction force, the traction wire 19 can not drive the sealing plug 20 to move downwards, at this time, the sealing valve 24 can be used for pumping air from the bottom of the pressure regulating tank 21 through the air pipe 22 and the connecting valve 23, and the sealing plug 20 is driven to move downwards to the initial position by using the pressure difference in the preparation barrel 2.
Use the device not only to have the function of adding different raw materials to preparation bucket 2 stage by stage, can will prepare 2 inside seals of bucket when not adding the raw materials moreover, constantly increase the pressure in the preparation bucket 2 when sealed preparation bucket 2, eliminate the produced bubble of mixing subassembly stirring, have mechanical defoaming function under the prerequisite that does not need additionally to increase the defoaming agent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The preparation method of the silane modified polyether sealant for the fabricated building is characterized in that the sealant comprises the following raw materials in percentage by mass:
100-180 parts of modified silane polyether resin, 30-50 parts of plasticizer, 1-5 parts of silane coupling agent, 8-16 parts of adhesion promoter, 50-75 parts of water removing agent, 0.5-2 parts of dibutyltin dilaurate and 0.5-2 parts of antioxidant;
or the raw materials comprise the following components in percentage by mass:
120-160 parts of modified silane polyether resin, 35-45 parts of plasticizer, 2-4 parts of silane coupling agent, 10-14 parts of adhesion promoter, 57-68 parts of water removing agent, 1-1.7 parts of dibutyltin dilaurate and 1-1.5 parts of antioxidant;
the silane modified polyether sealant for the fabricated building comprises the following raw materials in percentage by mass:
140 parts of modified silane polyether resin, 40 parts of plasticizer, 3 parts of silane coupling agent, 12 parts of adhesion promoter, 65 parts of water removing agent, 1.3 parts of dibutyltin dilaurate and 1.3 parts of antioxidant;
the preparation method of the silane modified polyether sealant for the fabricated building comprises the following steps:
weighing the raw materials in proportion, and filling the modified silane polyether resin, the plasticizer, the dibutyltin dilaurate and the antioxidant in the raw materials into a stirring device for fully mixing to obtain a pre-reactant;
step two; adding a water removing agent and a viscosity promoter into the pre-reactant obtained in the stirring device, and mixing and dehydrating again to obtain an intermediate reactant;
adding a silane coupling agent into a stirring device, uniformly stirring the silane coupling agent and the intermediate reactant, and defoaming in a micro-pressure environment to obtain a silane modified polyether sealant product;
the stirring device comprises a frame body (1) with supporting legs at four corners and a preparation barrel (2) fixed on the frame body (1), wherein an installation part (4) fixed with the frame body (1) is arranged on one side of the preparation barrel (2), a motor (3) is installed on one side of the installation part (4), and a hopper (17) used for adding raw materials into the preparation barrel (2) is arranged on the other side of the installation part;
a blending component for mixing the raw materials added to the bottom of the preparation barrel (2) is rotatably mounted in the preparation barrel (2), penetrates through the top of the preparation barrel (2) and is in sealed rotary connection with the preparation barrel, and the top of the mixing component is connected with the output end of the motor (3);
the hopper (17) is communicated with the interior of the preparation barrel (2) through a material pipe (16), a plugging mechanism is arranged at the joint of the material pipe (16) and the preparation barrel (2), the plugging mechanism is connected with the blending assembly through a movable structure, the movable structure drives the movable structure to move towards the bottom of the preparation barrel (2) from top to bottom in the process of mixing raw materials by the blending assembly, the raw materials in the hopper (17) are discharged into the preparation barrel (2) when the movable structure moves to the plugging mechanism, and the preparation barrel (2) is sealed after the movable structure crosses the plugging mechanism;
the hopper (17) are three and are respectively communicated with the preparation barrel (2) through three material pipes (16), and the joints of the three material pipes (16) and the preparation barrel (2) are arranged from top to bottom.
2. The preparation method of the silane modified polyether sealant for the fabricated building as claimed in claim 1, wherein the blending component comprises a screw rod (5) penetrating through the center of the top of the preparation barrel (2) and in sealed and rotatable connection therewith, a stirring shaft (6) fixed at the lower end of the screw rod (5), and a plurality of circles of mixing blades (7) circumferentially arranged on the outer wall of the stirring shaft (6);
the upper end of the screw rod (5) is connected with the output end of the motor (3); the movable structure is connected with the screw rod (5), a discharge opening is formed in the bottom of the preparation barrel (2), and a detachable end cover is arranged at the discharge opening in a sealed mode.
3. The preparation method of the silane modified polyether sealant for the fabricated building as claimed in claim 2, wherein the movable structure comprises a threaded sleeve (8) screwed on the screw rod (5), a support rod (9) fixed on one side of the threaded sleeve (8) close to the hopper (17), a slide block (12) fixed on the end of the support rod (9), and a sliding groove (13) installed on the inner wall of the preparation barrel (2) and slidably matched with the slide block (12);
the upper portion and the lower portion of the supporting rod (9) are respectively provided with a movable contact finger (10), the top wall and the lower portion of the preparation barrel (2) are respectively provided with a waterproof switch (11), the waterproof switches (11) are connected with the motor (3), and the two waterproof switches (11) and the two movable contact fingers (10) are coaxially arranged.
4. The preparation method of the silane modified polyether sealant for the fabricated building as claimed in claim 3, wherein the plugging mechanism comprises a fixing sleeve (15) penetrating through and fixedly connected with the side wall of the preparation barrel (2), a stopper (29) fixed in the material pipe (16), a plugging member (27) elastically connected with the stopper (29) through a spring (28), a bracket (26) slidably arranged in the fixing sleeve (15) and fixed with the plugging member (27), and a roller (18) rotatably arranged at one end of the bracket (26) close to the preparation barrel (2);
the sliding groove (13) is provided with a through hole (14) for the roller (18) to pass through, the plugging piece (27) is in sealing fit with the inner wall of the fixed sleeve (15), and the end part of the material pipe (16) is in sealing fit with the fixed sleeve (15).
5. The preparation method of the silane modified polyether sealant for the fabricated building as claimed in claim 3, wherein a pressure regulating assembly is further arranged in the preparation barrel (2), the pressure regulating assembly comprises a pressure regulating box (21) fixed in the preparation barrel (2), the lower part of the upper opening of the pressure regulating box (21) is sealed, a sealing plug (20) is arranged in the pressure regulating box (21) in a sealing and sliding manner, one side of the threaded sleeve (8) opposite to the support rod (9) is connected with one end of a traction wire (19), and the other end of the traction wire (19) penetrates through the upper opening of the pressure regulating box (21) and is connected with the sealing plug (20);
the top of pressure regulating box (21) be provided with pulley (25) that the inner wall of preparation bucket (2) rotated the connection, traction wire (19) with pulley (25) roll cooperation, just the bottom of pressure regulating box (21) is passed through connecting valve (23) and trachea (22) one end intercommunication, trachea (22) other end is in with the installation sealing valve (24) at preparation bucket (2) top are connected.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111073575A (en) * | 2019-12-31 | 2020-04-28 | 江苏瑞洋安泰新材料科技有限公司 | Single-component silane modified polyether sealant for prefabricated building and preparation method thereof |
| CN211358492U (en) * | 2019-10-09 | 2020-08-28 | 兰州长城润滑油有限责任公司 | Stirring kettle for homogenizing and feeding defoaming agent |
| CN112023754A (en) * | 2020-07-07 | 2020-12-04 | 翁杰 | Integrated slag removal and defoaming coating mixing method |
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| CN105445974A (en) * | 2016-01-04 | 2016-03-30 | 京东方科技集团股份有限公司 | Pressurized defoaming equipment and cabin door seal structure thereof |
| US11358106B2 (en) * | 2019-01-25 | 2022-06-14 | Hamilton Beach Brands, Inc. | Stand mixer with mechanism to lift head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211358492U (en) * | 2019-10-09 | 2020-08-28 | 兰州长城润滑油有限责任公司 | Stirring kettle for homogenizing and feeding defoaming agent |
| CN111073575A (en) * | 2019-12-31 | 2020-04-28 | 江苏瑞洋安泰新材料科技有限公司 | Single-component silane modified polyether sealant for prefabricated building and preparation method thereof |
| CN112023754A (en) * | 2020-07-07 | 2020-12-04 | 翁杰 | Integrated slag removal and defoaming coating mixing method |
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