CN109401511A - A kind of self-cleaning external wall of building water paint and preparation method - Google Patents
A kind of self-cleaning external wall of building water paint and preparation method Download PDFInfo
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2438/00—Living radical polymerisation
- C08F2438/01—Atom Transfer Radical Polymerization [ATRP] or reverse ATRP
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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Abstract
The present invention relates to a kind of self-cleaning external wall of building water paint and preparation methods, belong to technical field of coatings.The technical problem to be solved by the present invention is to provide a kind of self-cleaning external wall of building water paint and preparation methods, ptfe emulsion and silicon dioxide gel are complex as nano-sized hydrophobic microballoon by the preparation method, nano superhydrophobic microballoon is accommodated using the unique three-dimensional structure dispersion of branched polymer during polyacrylate is hyperbranched, nano-sized hydrophobic microballoon is easily dispersed and evenly spreads out to form hydrophobic layer in the coating, to obtain hydrophobic self-cleaning exterior wall building water paint, its method is simple, strong operability, cost is relatively low.The coating of the coating that the method for the present invention is prepared, formation is not only hydrophobic, and has excellent water resistance, stain resistance.
Description
Technical field
The present invention relates to a kind of self-cleaning external wall of building water paint and preparation methods, belong to technical field of coatings.
Background technique
Coating is to be coated in the body surface protected or decorated, and can form the continuous of firm attachment with coated article
Film coating, because coating is exposed in atmosphere, the effects of cold and hot variation, air oxidation, coating easily occur cracking, dusting, peeling,
Phenomena such as discoloration, makes coating lose original decoration defencive function.Be completed building it is upper we it is common to the case where be exterior wall
Coating occurred as soon as the aging phenomena such as loss of gloss, colour fading, peeling, peeling, dusting with 2~3 years, and decorative effect is had a greatly reduced quality.In order to protect
Architecture quality is demonstrate,proved, developer often selects ceramic tile even stone material to do decoration of exterior wall.Not only increase cost, and wall color
It is single.In order to which exterior coating is rich in color, facing is versatile and flexible, can the colorful architectural style of expressed in abundance, in particular with building
Energy conservation and the popularization and application of External Thermal Insulation Technology for External are built, exterior coating is gradually to self-cleaning, water-fast, durable sexual development.Self-cleaning function
It, can be with long-lasting cleanliness from the invasion of spot.
Self-cleaning coating can be prevented by the surface property of the substrates such as change glass, ceramics, metal or plastics on its surface
Adhere to small water droplet, to reach self-cleaning effect.According to action principle, self-cleaning coating can be divided into two classes: one kind be establish it is super-hydrophobic
Surface makes water droplet roll landing and pollutant is washed away to reach self-cleaning effect;Another kind is to establish ultra-hydrophilic surface, works as water droplet
It can sprawl to form uniform moisture film rapidly when touching film coated surface, flow away under the effect of gravity, thus can effectively take away dirt
Stain, to keep surface cleaning.
Hydrophobic self-cleaning coating hydrophobic effect can occur in metope, show as water in body surface in droplet shape, and to low
Place's sliding, droplet can wrap up in away the tiny sundries such as dust, to reach clean effect.Scientist is to various animals and plants surfaces
It is found after being studied, nature is there are various super hydrophobic surfaces, and most typically lotus leaf surface, has self-cleaning function, can be with
" mud is without contaminating out ".German botany professor W. Barthlott et al. has found after studying lotus leaf surface, lotus
There are the mastoid processes of wax crystalline substance and countless micron-scales for leaf surface, they think that the automatically cleaning of lotus leaf is characterized in by micro- on rough surface
The mastoid process and wax of rice structure are brilliant common caused, and have been put forward for the first time the concept of " lotus leaf effect ".But super hydrophobic surface knot
Structure can occur in use corrode and wear etc. damage, and long-time light irradiation and pollutant accumulation also result in it is super
The reduction of hydrophobic surface property.Lotus leaf surface due to its own metabolism and can guarantee the long-term of its super-hydrophobic self-cleaning performance
Effectively;However imitating this biological metabolism is that very difficult, artificial constructed self-cleaning surface is difficult to realize automatically cleaning
The regeneration of effect restores, this is also restricted the application of super hydrophobic surface film.
Further, since hydrophobic product is usually the high-molecular organic material of oleophylic, it is dirty due to electrostatic adsorption ash easy to stick
It is difficult to be rinsed with water completely after dye object deposition, is especially unsuitable for using in the less area of northern rainwater.
Organic fluoride inorganic agent product are commonly used to improve the grease proofing anti-pollution of coating, treated that product has is lower for Organic fluoride
Interfacial tension, excellent heat resistance, chemical stability, thus excellent Water-proof and oil-proof, anti-pollution can be assigned.For example, Shen
Number a kind of fluorine-containing polyacrylic acid latex and preparation method thereof, the latex packet please be disclosed for 201611098050.3 patent of invention
Include following raw materials in parts by weight: 10-15 parts of dodecafluoroheptyl methacrylate；Hexafluorobutyl mathacrylate 10-
15 parts；20-30 parts of isoamyl acrylate；20-30 parts of Process Conditions of Cetane Acrylate；5-10 parts of isobutyl acrylate；Acrylonitrile 3-5
Part；0.3-0.5 parts of carbon acid sodium；0.3-0.5 parts of ammonium persulfate；80-100 parts of deionized water；3-5 parts of OP-10 emulsifier；
2-3 parts of dodecyl sodium sulfate.The latex is using fluoropropenes acid esters monomer as primary raw material, using emulsion polymerization technique system
For the fluorine-containing system latex with preferable against weather, water resistance and certain self-cleaning property.The latex can be applied to
The preparation of acrylic type water-proof material, building external paint and various related films.But the coating of organic fluoride is difficult to disperse
Film forming, it is difficult to be used with water paint, and synthesize with fluorine silicon resin complexity and cost of material is higher.
Summary of the invention
It for existing building exterior coating poor water resistance, is easy to fall off, easily dirty defect, the present invention proposes a kind of self-cleaning
External wall of building water paint and preparation method.
First technical problem that the present invention solves is to provide a kind of preparation method of self-cleaning external wall of building water paint.
The preparation method of self-cleaning external wall of building water paint of the present invention, includes the following steps:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 1~3:1；
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and dichloro
Methane is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in ethyl acetate and
The in the mixed solvent of n-hexane recrystallizes, and obtains 2- t-butoxycarbonyl amino-ethyl acrylate；
C, the preparation of super branched polyacrylate multiple emulsion: by monomer butyl acrylate, monomeric acrylic, emulsifier, nanometer
Hydrophobic microballoon is added to the water carry out pre-emulsification, obtains pre-emulsion, and 2- t-butoxycarbonyl amino-propylene is then added in pre-emulsion
Acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed under mild alkaline conditions, are passed through nitrogen, and initiator initiation reaction, reaction is added
After completely, super branched polyacrylate multiple emulsion is obtained；
D, super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and water are mixed
Conjunction stirs evenly, and obtains self-cleaning external wall of building water paint.
Ptfe emulsion and silicon dioxide gel are complex as nano-sized hydrophobic microballoon, in polypropylene by the method for the present invention
Nano superhydrophobic microballoon is accommodated using the unique three-dimensional structure dispersion of branched polymer during acid esters is hyperbranched, nano-sized hydrophobic is micro-
Ball is easily dispersed and evenly spreads out to form hydrophobic layer in the coating, and the coating of formation is not only hydrophobic, and with excellent resistance to
Aqueous, stain resistance.
A step is to prepare the process of nano-sized hydrophobic microballoon, and ptfe emulsion and silicon dioxide gel are uniformly dispersed,
Spray drying.
Wherein, ptfe emulsion is by the dispersion liquid concentration after tetrafluoroethylene polymerization and with nonionic surfactant
The stable aqueous dispersions of agent.Ptfe emulsion has heat-resisting, cold-resistant and wearability outstanding, and there are also excellent electrical isolations
Property, and do not influenced by temperature and frequency.In addition, also have the characteristics that not adhere, do not absorb water, do not burn, it is therefore, of the invention
Self-cleaning external wall of building water paint, uses ptfe emulsion to be prepared for raw material.
Silica silica solution is dispersion liquid of the nanoscale silica dioxide granule in water or in solvent.The present invention uses
After silicon dioxide gel is mixed with ptfe emulsion, spray drying obtains nano-sized hydrophobic microballoon.In the step, polytetrafluoro
The weight ratio of vac emulsion and silicon dioxide gel is key, in order to improve the performance of final coating, it is preferred that polytetrafluoroethylene (PTFE)
Lotion and the weight ratio of silicon dioxide gel are 2:1.The mass concentration of the ptfe emulsion is 15%；The titanium dioxide
The mass concentration of silica solution is 8%.
B step is primarily to prepare 2- t-butoxycarbonyl amino-ethyl acrylate, by 2- t-butoxycarbonyl amino-second
Alcohol, triethylamine and methylene chloride are added in reaction kettle, are stirred evenly, and acryloyl chloride is added dropwise and continues to stir, mistake at room temperature
Filter recrystallizes in the in the mixed solvent of ethyl acetate and n-hexane, obtains 2- t-butoxycarbonyl amino-ethyl acrylate.
Preferably, in b step, 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine, methylene chloride and acryloyl chloride material
Than for 20~25g:15~20g:100ml:13~15g.
A step and b step in the method for the present invention do not have time sequencing, can first carry out a step be prepared nanometer dredge
Water microballoon, then carry out b step；B step can also first be carried out and be prepared 2- t-butoxycarbonyl amino-ethyl acrylate, then into
Row a step；Further, it is also possible to which a step and b step are carried out simultaneously.
Step c is to prepare super branched polyacrylate Composite Milk.By monomer butyl acrylate, monomeric acrylic, emulsifier,
Nano-sized hydrophobic microballoon is added to the water carry out pre-emulsification, obtains pre-emulsion, and 2- t-butoxycarbonyl amino-is then added in pre-emulsion
Ethyl acrylate, chain extender, pH adjusting agent are uniformly mixed under mild alkaline conditions, are passed through nitrogen, and initiator initiation reaction is added,
After fully reacting, super branched polyacrylate multiple emulsion is obtained.
Preferably, in pre-emulsion monomer butyl acrylate parts by weight 10~14, the parts by weight 23~25 of monomeric acrylic,
The parts by weight 4~6 of emulsifier, the parts by weight 5-10 of the parts by weight 10~15 of nano-sized hydrophobic microballoon, water；Preferably, pre-emulsion with
The mass ratio of 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 3~6:1:0.3~0.5.
The present invention does not have particular/special requirement to chain extender, and chain extender commonly used in the art is suitable for the present invention, it is preferred that institute
Stating chain extender is aminoethylaminopropyl dimethyl silicone polymer (AEAPS).
Initiator commonly used in the art is also applied for the present invention, it is preferred that the initiator is ATRP initiator.ATRP draws
Hair agent be atom transfer radical polymerization initiator, ATRP(Atom Transfer Radical Polymerization) be with
Simple organohalogen compounds are initiator, transient metal complex is halogen atom carrier, by redox reaction, in reactive species
Reversible dynamic equilibrium is established between suspend mode kind, to realize the control to polymerization reaction.
Step c needs are reacted under mild alkaline conditions, it is preferred that the pH value of the mild alkaline conditions is 7.2~8.1.More
Preferably, the pH value of the mild alkaline conditions is 7.5.
Mild alkaline conditions are reached using pH adjusting agent.Common pH adjusting agent can be used for this invention, it is preferred that institute
Stating pH adjusting agent is sodium bicarbonate or ammonium hydroxide.
Step d is to prepare the process of coating, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, film forming
Auxiliary agent, thickener, dispersing agent and water are mixed evenly, and obtain self-cleaning external wall of building water paint.
The proportion of each raw material in Step d can be using routine, in order to improve the performance of coating, it is preferred that by weight
Part meter is measured, 10~20 parts of super branched polyacrylate multiple emulsion, 10~20 parts of inorganic pigment, 20~30 parts of filler, film forming helps
5~10 parts of agent, 2~8 parts of thickener, 1~5 part of dispersing agent, 80~100 parts of water.
Wherein, pigment is the important component part in formulation for coating material, it can make coating have covering, coloring, protection, prevent
Corrosion etc. basic functions, the present invention mainly use inorganic pigment, preferably, the inorganic pigment be rutile titanium white,
At least one of iron oxide yellow and iron oxide red.
For filler since the overwhelming majority comes from natural crystal converted products, the characteristics such as chemical stabilization, wear-resisting, water-fast are good, and
It is cheap, skeleton function is played in coating.Increase the thickness of film by filling, improves and apply film dynamic performance, and can rise resistance to
Long, the effects of anticorrosion, heat-insulated, delustring.On the other hand, addition filler can also reduce coating cost, price inexpensive using its
Well below pigment, under the premise of meeting paint film covering power, extender pigment is properly added to supplement color pigment in Qi Zhongying
Some volumes.Preferably, the filler is at least one of sericite in powder, kaolin, talcum powder, powdered whiting.
Coalescing agent is also known as coalescing aid, be it is a kind of can promote high-molecular compound Plastic Flow and flexible deformation, improve
Coalesce performance, the substance that can be formed a film within the scope of wide construction temperature.Preferably, coalescing agent is propandiol butyl ether or the third two
Alcohol methyl ether acetate.
Thickener is a kind of auxiliary rheological agents, can not only coating be made to thicken, and prevents sagging phenomenon, Er Qieneng occur in construction
Assign coating excellent mechanical performance and storage stability.Preferably, the thickener be sodium bentonite, organobentonite,
Diatomite or attapulgite soil.
Dispersing agent is one kind in the molecule while having lipophilic and two kinds of opposite natures of hydrophily interfacial agent.It can
Those are poorly soluble in the inorganic of liquid, the solid and liquid particles of organic pigment for uniform dispersion, while can also prevent particle
Sedimentation and cohesion.Preferably, the dispersing agent is polyethylene glycol 200.
Second technical problem that the present invention solves is to provide a kind of self-cleaning external wall of building water paint.
Self-cleaning external wall of building water paint of the present invention, is prepared using the above method, which can be evenly dispersed
For open form at hydrophobic layer, the coating of formation is not only hydrophobic self-cleaning, and has excellent water resistance, stain resistance.
Compared with prior art, the invention has the following beneficial effects:
Ptfe emulsion and silicon dioxide gel are complex as nano-sized hydrophobic microballoon by the present invention, hyperbranched in polyacrylate
Nano superhydrophobic microballoon is accommodated using the unique three-dimensional structure dispersion of branched polymer in the process, nano-sized hydrophobic microballoon is easily dispersed
And evenly spread out to form hydrophobic layer in the coating, to obtain hydrophobic self-cleaning exterior wall building water paint, method is simple, can
Strong operability, cost is relatively low.
The coating of the coating that the method for the present invention is prepared, formation is not only hydrophobic, and has excellent water resistance, resistance to is stained with
Dirt.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
Self-cleaning external wall of building water paint is prepared with the following method, step is successively as follows:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 1:1.The ptfe emulsion
Mass concentration is 15%；The mass concentration of the silicon dioxide gel is 8%.
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and
Methylene chloride is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in acetic acid second
The in the mixed solvent of ester and n-hexane recrystallization, obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertiary butyloxycarbonyl
Base amino-alcohols, triethylamine, methylene chloride and acryloyl chloride material ratio be 20g:15g:100ml:13g.
C, the preparation of super branched polyacrylate multiple emulsion: monomer butyl acrylate, monomeric acrylic, emulsifier are spat
Temperature 60, nano-sized hydrophobic microballoon are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- tertbutyloxycarbonyl is then added in pre-emulsion
Amino-acrylonitrile acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 7.2 mild alkaline conditions, are passed through nitrogen, are added
Initiator initiation reaction after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein monomer propylene in pre-emulsion
The parts by weight 10 of acid butyl ester, the parts by weight 23 of monomeric acrylic, the parts by weight 4 of emulsifier, the parts by weight 10 of nano-sized hydrophobic microballoon,
The parts by weight 5 of water；The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 3:1:0.3；It is described
Chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
D, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and
Water is mixed evenly, and obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is multiple
Close 10 parts of lotion, 10 parts of inorganic pigment, 30 parts of filler, 5 parts of coalescing agent, 2 parts of thickener, 1 part of dispersing agent, 80 parts of water.It is described
Inorganic pigment be rutile titanium white；The filler is sericite in powder；The coalescing agent is to thicken described in propandiol butyl ether
Agent is that the thickener is sodium bentonite；The dispersing agent is polyethylene glycol 200.
Embodiment 2
Self-cleaning external wall of building water paint is prepared with the following method, step is successively as follows:
A, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and dichloro
Methane is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in ethyl acetate and
The in the mixed solvent of n-hexane recrystallizes, and obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertbutyloxycarbonyl ammonia
Base-ethyl alcohol, triethylamine, methylene chloride and acryloyl chloride material ratio be 25g:20g:100ml:15g.
B, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, and are done by spraying
It is dry to obtain nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 3:1.The polytetrafluoroethylene (PTFE) cream
The mass concentration of liquid is 15%；The mass concentration of the silicon dioxide gel is 8%.
C, the preparation of super branched polyacrylate multiple emulsion: by monomer butyl acrylate, monomeric acrylic, emulsifier
NP-10, nano-sized hydrophobic microballoon are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- tertiary butyloxycarbonyl is then added in pre-emulsion
Base amino-acrylonitrile acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 8.1 mild alkaline conditions, are passed through nitrogen, add
Enter initiator initiation reaction, after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein monomer third in pre-emulsion
The parts by weight 12 of olefin(e) acid butyl ester, the parts by weight 23 of monomeric acrylic, the parts by weight 4 of emulsifier, the parts by weight of nano-sized hydrophobic microballoon
10, the parts by weight 5 of water；The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 6:1:0.5；
The chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
D, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and
Water is mixed evenly, and obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is multiple
Close 20 parts of lotion, 10 parts of inorganic pigment, 20 parts of filler, 10 parts of coalescing agent, 8 parts of thickener, 5 parts of dispersing agent, 100 parts of water.Institute
The inorganic pigment stated is iron oxide yellow；The filler is kaolin；The coalescing agent is propylene glycol methyl ether acetate；It is described
Thickener is that the thickener is organobentonite；The dispersing agent is polyethylene glycol 200.
Embodiment 3
Self-cleaning external wall of building water paint is prepared with the following method, step is successively as follows:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 1.5:1.The ptfe emulsion
Mass concentration be 15%；The mass concentration of the silicon dioxide gel is 8%.
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and
Methylene chloride is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in acetic acid second
The in the mixed solvent of ester and n-hexane recrystallization, obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertiary butyloxycarbonyl
Base amino-alcohols, triethylamine, methylene chloride and acryloyl chloride material ratio be 21g:18g:100ml:14g.
C, the preparation of super branched polyacrylate multiple emulsion: monomer butyl acrylate, monomeric acrylic, emulsifier are spat
Temperature 80, nano-sized hydrophobic microballoon are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- tertbutyloxycarbonyl is then added in pre-emulsion
Amino-acrylonitrile acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 7.8 mild alkaline conditions, are passed through nitrogen, are added
Initiator initiation reaction after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein monomer propylene in pre-emulsion
The parts by weight 14 of acid butyl ester, the parts by weight 25 of monomeric acrylic, the parts by weight 5 of emulsifier, the parts by weight 15 of nano-sized hydrophobic microballoon,
The parts by weight 10 of water；The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 5:1:0.4；Institute
Stating chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
D, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and
Water is mixed evenly, and obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is multiple
Close 12 parts of lotion, 18 parts of inorganic pigment, 21 parts of filler, 6 parts of coalescing agent, 3 parts of thickener, 2 parts of dispersing agent, 90 parts of water.It is described
Inorganic pigment be iron oxide red；The filler is talcum powder；The coalescing agent is propandiol butyl ether；The thickener is
The thickener is attapulgite soil；The dispersing agent is polyethylene glycol 200.
Embodiment 4
Self-cleaning external wall of building water paint is prepared with the following method, step is successively as follows:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 2.5:1.The ptfe emulsion
Mass concentration be 15%；The mass concentration of the silicon dioxide gel is 8%.
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and
Methylene chloride is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in acetic acid second
The in the mixed solvent of ester and n-hexane recrystallization, obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertiary butyloxycarbonyl
Base amino-alcohols, triethylamine, methylene chloride and acryloyl chloride material ratio be 22g:16g:100ml:14g.
C, the preparation of super branched polyacrylate multiple emulsion: by monomer butyl acrylate, monomeric acrylic, emulsifier
OP-10, nano-sized hydrophobic microballoon are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- tertiary butyloxycarbonyl is then added in pre-emulsion
Base amino-acrylonitrile acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 7.5 mild alkaline conditions, are passed through nitrogen, add
Enter initiator initiation reaction, after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein monomer third in pre-emulsion
The parts by weight 10 of olefin(e) acid butyl ester, the parts by weight 25 of monomeric acrylic, the parts by weight 6 of emulsifier, the parts by weight of nano-sized hydrophobic microballoon
12, the parts by weight 8 of water；The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 5:1:0.3；
The chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
D, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and
Water is mixed evenly, and obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is multiple
Close 18 parts of lotion, 14 parts of inorganic pigment, 24 parts of filler, 8 parts of coalescing agent, 7 parts of thickener, 4 parts of dispersing agent, 95 parts of water.It is described
Inorganic pigment be rutile titanium white；The filler is powdered whiting；The coalescing agent is propandiol butyl ether；The increasing
Thick dose is sodium bentonite for the thickener；The dispersing agent is polyethylene glycol 200.
Embodiment 5
Self-cleaning external wall of building water paint is prepared with the following method, step is successively as follows:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 2:1.The ptfe emulsion
Mass concentration is 15%；The mass concentration of the silicon dioxide gel is 8%.
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and
Methylene chloride is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in acetic acid second
The in the mixed solvent of ester and n-hexane recrystallization, obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertiary butyloxycarbonyl
Base amino-alcohols, triethylamine, methylene chloride and acryloyl chloride material ratio be 23g:17g:100ml:14g.
C, the preparation of super branched polyacrylate multiple emulsion: monomer butyl acrylate, monomeric acrylic, emulsifier are spat
Temperature 60, nano-sized hydrophobic microballoon are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- tertbutyloxycarbonyl is then added in pre-emulsion
Amino-acrylonitrile acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 7.6 mild alkaline conditions, are passed through nitrogen, are added
Initiator initiation reaction after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein monomer propylene in pre-emulsion
The parts by weight 14 of acid butyl ester, the parts by weight 25 of monomeric acrylic, the parts by weight 6 of emulsifier, the parts by weight 15 of nano-sized hydrophobic microballoon,
The parts by weight 5 of water；The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 4:1:0.4；It is described
Chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
D, by super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and
Water is mixed evenly, and obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is multiple
16 parts of lotion of conjunction, inorganic pigment 18,22 parts of filler, 7 parts of coalescing agent, 5 parts of thickener, 3 parts of dispersing agent, 88 parts of water.Described
Inorganic pigment is rutile titanium white；The filler is sericite in powder；The coalescing agent is propandiol butyl ether；The thickener
It is sodium bentonite for the thickener；The dispersing agent is polyethylene glycol 200.
Comparative example 1
2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and dichloromethane
Alkane is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in ethyl acetate and just
The in the mixed solvent of hexane recrystallizes, and obtains 2- t-butoxycarbonyl amino-ethyl acrylate；Wherein, 2- tertbutyloxycarbonyl ammonia
Base-ethyl alcohol, triethylamine, methylene chloride and acryloyl chloride material ratio be 23g:17g:100ml:14g.
The preparation of super branched polyacrylate multiple emulsion: by monomer butyl acrylate, monomeric acrylic, emulsifier tween
60 are added to the water carry out pre-emulsification, obtain pre-emulsion, and 2- t-butoxycarbonyl amino-acrylic acid second is then added in pre-emulsion
Ester, chain extender, pH adjusting agent are uniformly mixed in the case where pH value is 7.6 mild alkaline conditions, are passed through nitrogen, initiator is added and causes instead
It answers, after fully reacting, obtains super branched polyacrylate multiple emulsion, wherein the weight of monomer butyl acrylate in pre-emulsion
Part 14, the parts by weight 25 of monomeric acrylic, the parts by weight 6 of emulsifier, the parts by weight 5 of water；Pre-emulsion and 2- tertbutyloxycarbonyl ammonia
The mass ratio of base-ethyl acrylate and chain extender is 4:1:0.4；The chain extender is aminoethylaminopropyl polydimethylsiloxanes
Alkane；The initiator is ATRP initiator.
By super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and water
It is mixed evenly, obtains self-cleaning external wall of building water paint, wherein by weight, super branched polyacrylate is compound
16 parts of lotion, inorganic pigment 18,22 parts of filler, 7 parts of coalescing agent, 5 parts of thickener, 3 parts of dispersing agent, 88 parts of water.The nothing
Machine pigment is rutile titanium white；The filler is sericite in powder；The coalescing agent is propandiol butyl ether；The thickener is
The thickener is sodium bentonite；The dispersing agent is polyethylene glycol 200.
Comparative example 1 does not prepare nano-sized hydrophobic microballoon.
The properties of product of testing example 1~5 and comparative example 1, test method:
Clean metope, it is ensured that wall is firm, and the coating of Examples 1 to 5 and comparative example 1 point 3 times flat batch of upper walls are completed to apply
Work.According to GB/T 9755-2014 standard testing, specifically: 1, application property: whether can be uniformly dispersed, roller coating is accessible；2,
Surface drying time answers≤2h；3, appearance of film: whether normal；4, water resistance: >=96h；5, alkali resistance: >=48h；6, abrasion resistance:
>=2000 times；7, coating temperature-change resistance: >=3 times without exception.Test result is shown in Table 1.
Table 1
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 |
| Application property | It can be with | It can be with | It can be with | It can be with | It can be with | It can be with |
| Surface drying time | 1.2h | 1.1h | 1.3h | 1.1h | 1.2h | 1.1h |
| Smear appearance | Normally | Normally | Normally | Normally | Normally | Normally |
| Water resistance | 321h | 334h | 352h | 405h | 458h | 211h |
| Alkali resistance | 251h | 258h | 267h | 285h | 277h | 118h |
| Abrasion resistance | 3844 times | 4008 times | 4351 times | 4289 times | 4955 times | 1841 times |
| Temperature-change resistance | It is without exception | It is without exception | It is without exception | It is without exception | It is without exception | There is cracking |
Claims (10)
1. a kind of preparation method of self-cleaning external wall of building water paint, which comprises the steps of:
A, the preparation of nano-sized hydrophobic microballoon: ptfe emulsion and silicon dioxide gel are uniformly dispersed, spray-dried
To nano-sized hydrophobic microballoon；The weight ratio of ptfe emulsion and silicon dioxide gel is 1~3:1；
B, 2- t-butoxycarbonyl amino-ethyl acrylate preparation: by 2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine and dichloro
Methane is added in reaction kettle, is stirred evenly, and acryloyl chloride is added dropwise and continues to stir at room temperature, filters, in ethyl acetate and
The in the mixed solvent of n-hexane recrystallizes, and obtains 2- t-butoxycarbonyl amino-ethyl acrylate；
C, the preparation of super branched polyacrylate multiple emulsion: by monomer butyl acrylate, monomeric acrylic, emulsifier, nanometer
Hydrophobic microballoon is added to the water carry out pre-emulsification, obtains pre-emulsion, and 2- t-butoxycarbonyl amino-propylene is then added in pre-emulsion
Acetoacetic ester, chain extender, pH adjusting agent are uniformly mixed under mild alkaline conditions, are passed through nitrogen, and initiator initiation reaction, reaction is added
After completely, super branched polyacrylate multiple emulsion is obtained；
D, super branched polyacrylate multiple emulsion and inorganic pigment, filler, coalescing agent, thickener, dispersing agent and water are mixed
Conjunction stirs evenly, and obtains self-cleaning external wall of building water paint.
2. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in a step,
The weight ratio of ptfe emulsion and silicon dioxide gel is 2:1, and the mass concentration of the ptfe emulsion is 15%；
The mass concentration of the silicon dioxide gel is 8%.
3. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in b step,
2- t-butoxycarbonyl amino-ethyl alcohol, triethylamine, methylene chloride and acryloyl chloride material ratio be 20~25g:15~20g:
100ml:13~15g.
4. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in step c,
The parts by weight 10~14 of monomer butyl acrylate in pre-emulsion, the parts by weight 23~25 of monomeric acrylic, the parts by weight 4 of emulsifier
~6, the parts by weight 5-10 of the parts by weight 10~15 of nano-sized hydrophobic microballoon, water.
5. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in step c,
The mass ratio of pre-emulsion and 2- t-butoxycarbonyl amino-ethyl acrylate and chain extender is 3~6:1:0.3~0.5.
6. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in step c,
The chain extender is aminoethylaminopropyl dimethyl silicone polymer；The initiator is ATRP initiator.
7. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in step c,
The pH value of the mild alkaline conditions is 7.2~8.1.
8. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in Step d,
By weight, 10~20 parts of super branched polyacrylate multiple emulsion, 10~20 parts of inorganic pigment, 20~30 parts of filler, at
5~10 parts of film auxiliary agent, 2~8 parts of thickener, 1~5 part of dispersing agent, 80~100 parts of water.
9. the preparation method of self-cleaning external wall of building water paint according to claim 1, it is characterised in that: in Step d,
The inorganic pigment is at least one of rutile titanium white, iron oxide yellow and iron oxide red；The filler is sericite
At least one of powder, kaolin, talcum powder, powdered whiting；The coalescing agent is propandiol butyl ether or propylene glycol monomethyl ether
Acetate；The thickener is that the thickener is sodium bentonite, organobentonite, diatomite or attapulgite soil；It is described
Dispersing agent is polyethylene glycol 200.
10. a kind of self-cleaning external wall of building water paint, it is characterised in that: using according to any one of claims 1 to 9 self-cleaning
The preparation method of property external wall of building water paint is prepared.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112608415A (en) * | 2020-11-25 | 2021-04-06 | 万华化学集团股份有限公司 | Nano zinc oxide/vinyl polymer composite microsphere and preparation method and application thereof |
| CN114163890A (en) * | 2020-11-03 | 2022-03-11 | 徐洪涛 | Preparation method of high-weather-resistance waterproof exterior wall coating for building |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114163890A (en) * | 2020-11-03 | 2022-03-11 | 徐洪涛 | Preparation method of high-weather-resistance waterproof exterior wall coating for building |
| CN112608415A (en) * | 2020-11-25 | 2021-04-06 | 万华化学集团股份有限公司 | Nano zinc oxide/vinyl polymer composite microsphere and preparation method and application thereof |
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