CN114801250A - Continuous machine-made glass fiber reinforced plastic with friendly bonding interface and preparation process thereof - Google Patents
Continuous machine-made glass fiber reinforced plastic with friendly bonding interface and preparation process thereof Download PDFInfo
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- CN114801250A CN114801250A CN202110069148.0A CN202110069148A CN114801250A CN 114801250 A CN114801250 A CN 114801250A CN 202110069148 A CN202110069148 A CN 202110069148A CN 114801250 A CN114801250 A CN 114801250A
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- 239000011152 fibreglass Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000010410 layer Substances 0.000 claims abstract description 187
- 239000002994 raw material Substances 0.000 claims abstract description 67
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 18
- 229920005989 resin Polymers 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 54
- 239000011159 matrix material Substances 0.000 claims description 49
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000004744 fabric Substances 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 17
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 11
- 210000002469 basement membrane Anatomy 0.000 claims description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 201000003373 familial cold autoinflammatory syndrome 3 Diseases 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 239000003292 glue Substances 0.000 abstract description 13
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 12
- 239000011496 polyurethane foam Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 4
- 230000032798 delamination Effects 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 238000005187 foaming Methods 0.000 description 15
- 238000013329 compounding Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 230000003679 aging effect Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- -1 surface felt Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a continuous machine-made glass fiber reinforced plastic with a friendly bonding interface and a preparation process thereof, belonging to the technical field of glass fiber reinforced plastic plates, wherein an adhesive isolating film and an adhesive layer are arranged above a substrate layer of a glass fiber reinforced plastic panel to form a substrate layer-adhesive isolating film-adhesive layer structure, the adhesive isolating film can prevent resin of the substrate layer from penetrating into the adhesive layer and prevent the adhesive layer from containing resin, the adhesive layer has higher adhesive strength, so that the glass fiber reinforced plastic panel has a friendly bonding interface, when the continuous machine-made glass fiber reinforced plastic panel is applied to downstream products of the glass fiber reinforced plastic panel, such as the glass fiber reinforced plastic panel and a polyurethane foam plate, the polyurethane foam material enters the adhesive layer, so that the bonding effect between the glass fiber reinforced plastic panel and the polyurethane foam plate is good, glue is not needed, the quality defects of poor bonding effect, severe bulging, delamination and the like in the existing composite process are improved, and a production line is adopted for continuous one-step molding, the production efficiency is high, the raw materials are saved, and the market demand can be met.
Description
Technical Field
The invention relates to the technical field of glass fiber reinforced plastic plates, in particular to continuous machine-made glass fiber reinforced plastic with a friendly bonding interface and a preparation process thereof.
Background
The traditional polyurethane sandwich glass fiber reinforced plastic composite board product is formed by bonding and compounding a glass fiber reinforced plastic panel (coiled material or sheet) and a polyurethane foam sandwich by using glue. In order to improve the traditional process of compounding by using glue, in the foaming compounding process, two layers of glass fiber reinforced plastic panels are used, a support piece is added between the two layers of glass fiber reinforced plastic panels, a press is placed in the foaming compounding process, the periphery of the foaming compounding process is sealed by using a jig with holes, then a polyurethane foaming material is injected into a cavity through holes of the jig, and foaming is completed after pressure maintaining is carried out for a period of time, namely compounding is completed. Compared with the traditional glue compounding process, the process does not use glue, does not need to purchase or prefabricate a polyurethane foam board (the polyurethane foam board is a polyurethane foam board formed by foaming a polyurethane foaming material and then peeling and slicing, and in order to improve the compound bonding strength, the surface of the polyurethane foam board also needs to be subjected to grooving treatment), greatly reduces the cost, and greatly improves the production efficiency (omits the complex processes of splicing the foam board, gluing water, particularly treating embedded parts and the like). And the weight of the product can be reduced (no glue is used), so that the energy is saved and the environment is protected. However, the foaming composite process has serious bottleneck restriction factors, namely, the bonding effect of the bonding surface of the glass fiber reinforced plastic panel and the polyurethane foaming material is poor, and serious quality defects such as bulging, delamination and the like are easily caused, so that the composite process cannot be popularized and applied in a large scale.
In addition, the production process of the glass fiber reinforced plastic panel comprises a manual mould plate making process, a non-continuous mechanism plate making process and a continuous mechanism plate making process, the production process of the manual mould plate making process and the non-continuous mechanism plate making process has a series of problems of unstable quality, low production efficiency and the like, the composite material cannot exert the maximum efficiency, the resource waste is caused, the cost of the glass fiber reinforced plastic panel is high, and the popularization and the application of the glass fiber reinforced plastic panel are influenced.
Disclosure of Invention
The invention provides a continuous machine-made glass fiber reinforced plastic with a friendly bonding interface and a preparation process thereof, wherein an adhesive isolating film and a bonding layer are arranged above a substrate layer of a glass fiber reinforced plastic panel, the adhesive isolating film and the bonding layer are compounded together in advance and then are laid on the substrate layer to form a structure of the substrate layer, the adhesive isolating film can prevent resin of the substrate layer from penetrating into the bonding layer, the bonding layer is prevented from containing resin, the bonding layer has higher bonding strength, so that the glass fiber reinforced plastic panel has the friendly bonding interface, when the continuous machine-made glass fiber reinforced plastic panel is applied to downstream products of the glass fiber reinforced plastic panel such as a foaming compounding process, a polyurethane foaming material enters the bonding layer, so that the glass fiber reinforced plastic panel and polyurethane foam sandwich are integrated on the bonding layer, and the bonding effect between the glass fiber reinforced plastic panel and the polyurethane foam sandwich is greatly improved. The method does not need glue, improves the serious quality defects of poor bonding effect, bulging, delamination and the like of the existing foaming composite process, adopts a production line for continuous one-step molding, has high production efficiency, saves raw materials, and can meet market demands.
In order to achieve the purpose, the invention adopts the following technical scheme:
the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein an adhesive isolating film and a bonding layer are sequentially arranged above the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 1-5 parts of curing agent and 0.5-2 parts of accelerator, wherein the bonding layer is made of any one of non-woven fabric, surface felt, glass fiber felt, stitch-bonded felt and fiber fabric.
Preferably, the material further comprises a gel coat layer, wherein the gel coat layer is arranged below the substrate layer and comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 10-20 parts of flexible unsaturated resin, 1-5 parts of curing agent and 0.5-2 parts of accelerator.
Preferably, the gel coat layer also comprises 0.3-0.5 part of ultraviolet absorbent.
Preferably, the matrix layer also comprises 20-70 parts of fiber reinforced materials.
Preferably, the fiber reinforcement material is any one or more of glass fiber chopped yarns, chopped strand mats, check fabrics, multi-axial fabrics, stitch-bonded mats, warp-knitted fabrics and electronic fiber fabrics.
Preferably, the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 2 parts of curing agent and 1 part of accelerator, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 15 parts of flexible unsaturated resin, 2 parts of curing agent and 1 part of accelerator.
The invention also provides a preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface, which comprises the following steps:
(1) respectively injecting the raw materials of the substrate layer into a stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, feeding a substrate layer raw material which is stirred and mixed to a bottom film to obtain a substrate layer, and controlling the thickness of the substrate layer according to the requirement of a finished product;
(3) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(4) a product thickness-fixing press roller;
(5) heating and curing in a curing oven at 80 deg.C;
(6) and (6) rolling and packaging.
Alternatively, the method comprises the following steps:
(1) respectively injecting the raw materials of the matrix layer and the gel coat layer into different stirring tanks in proportion, and fully stirring and mixing in the stirring tanks;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
Alternatively, the method comprises the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, adding the fiber reinforced material in the matrix layer raw material, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
The beneficial technical effects of the invention are as follows:
1. the adhesive isolation film and the bonding layer are arranged above the matrix layer of the glass fiber reinforced plastic panel, the adhesive isolation film and the bonding layer are compounded together in advance and then are laid on the matrix layer to form a matrix layer-adhesive isolation film-bonding layer structure, the adhesive isolation film can prevent resin of the matrix layer from penetrating into the bonding layer, the bonding layer is prevented from containing the resin, the bonding layer has high bonding strength, the glass fiber reinforced plastic panel has a friendly bonding interface, when the adhesive isolation film is applied to downstream products of the glass fiber reinforced plastic panel, such as a foaming compounding process, polyurethane foaming materials enter the bonding layer, the glass fiber reinforced plastic panel and polyurethane foam are integrated on the bonding layer, the bonding effect between the glass fiber reinforced plastic panel and the polyurethane foam is greatly improved, glue is not needed, and the serious quality defects of poor bonding effect, bulging, delamination and the like of the existing foaming compounding process are also improved;
2. the glass fiber reinforced plastic panel is continuously formed in one step by adopting a production line to obtain a continuous plate with an integrated structure, splicing is not needed, no seam exists, the problems of complex seam construction, low efficiency, high cost, unattractive appearance and difficult waterproof treatment are solved, the production efficiency is high, raw materials are saved, the problems of the production process of manual mould plate making and discontinuous machine plate making are solved, and the market demand can be met;
3. the invention adopts fiber reinforced materials such as glass fiber chopped strand, chopped strand mat, check cloth, multi-axial cloth and the like, has high glass fiber content, has the characteristics of excellent mechanical property, shearing property, high tensile strength and good impact resistance, soaks the composite forming plate with unsaturated polyester and resin, has the Babbitt hardness of more than 45HBa after being cured, and has good practical value for glass fiber reinforced plastic panels;
4. the gel coat layer is formed by combining unsaturated polyester resin and flexible resin, so that the product has better toughness and weather resistance, and the product has strong ultraviolet resistance and long service life by adopting an ultraviolet absorbent;
5. the invention does not adopt glue, is environment-friendly, nontoxic, tasteless, resistant to high and low temperature, corrosion-resistant and free from the problem of easy discoloration, and organic waste gas generated in the post-curing stage of the resin of the matrix layer is sealed by the adhesive isolation film without pungent smell.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein an adhesive isolating film and a bonding layer are sequentially arranged above the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 2 parts of curing agent and 0.5 part of accelerator, wherein the bonding layer is made of surface felt.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface in the embodiment 1 comprises the following steps:
(1) respectively injecting the raw materials of the substrate layer into a stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, feeding a substrate layer raw material which is stirred and mixed to a bottom film to obtain a substrate layer, and controlling the thickness of the substrate layer according to the requirement of a finished product;
(3) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(4) a product thickness-fixing press roller;
(5) heating and curing at 80 ℃ in a curing oven;
(6) and (6) rolling and packaging.
Example 2
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein an adhesive isolating film and a bonding layer are sequentially arranged above the substrate layer, the continuous machine-made glass fiber reinforced plastic further comprises a gel coat layer, the gel coat layer is arranged below the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 2 parts of curing agent and 1 part of accelerator, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 15 parts of flexible unsaturated resin, 2 parts of curing agent and 1 part of accelerator, wherein the bonding layer material is non-woven fabric.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface described in the embodiment 2 comprises the following steps:
(1) respectively injecting the raw materials of the matrix layer and the gel coat layer into different stirring tanks in proportion, and fully stirring and mixing in the stirring tanks;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing in a curing oven at 80 deg.C;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
Example 3
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein a glue separating film and a bonding layer are sequentially arranged above the substrate layer, the continuous machine-made glass fiber reinforced plastic further comprises a gel coat layer, the gel coat layer is arranged below the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 2 parts of curing agent, 1 part of accelerator and 20 parts of glass fiber chopped yarn, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 15 parts of flexible unsaturated resin, 2 parts of curing agent and 1 part of accelerator, wherein the bonding layer material is non-woven fabric.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface in the embodiment 3 comprises the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, adding glass fiber chopped yarns in the matrix layer raw material, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
Example 4
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein a glue separating film and a bonding layer are sequentially arranged above the substrate layer, the continuous machine-made glass fiber reinforced plastic further comprises a gel coat layer, the gel coat layer is arranged below the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 5 parts of curing agent, 2 parts of accelerator, 30 parts of chopped strand mat and 40 parts of electronic fiber cloth, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 20 parts of flexible unsaturated resin, 5 parts of curing agent, 2 parts of accelerator and 0.5 part of ultraviolet absorbent, wherein the bonding layer material is glass fiber felt.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface in the embodiment 4 comprises the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, adding the chopped strand mat and the electronic fiber cloth in the matrix layer raw material, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
Example 5
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein a glue separating film and a bonding layer are sequentially arranged above the substrate layer, the continuous machine-made glass fiber reinforced plastic further comprises a gel coat layer, the gel coat layer is arranged below the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 3.5 parts of curing agent, 1.6 parts of accelerator, 15 parts of checked cloth, 20 parts of multi-axial cloth and 20 parts of chopped strand mat, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 10 parts of flexible unsaturated resin, 3.5 parts of curing agent, 1.6 parts of accelerator and 0.3 part of ultraviolet absorbent, wherein the bonding layer is made of stitch-bonded felt.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface in the embodiment 5 comprises the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, adding the checkered cloth, the multi-axial cloth and the chopped strand mat in the matrix layer raw material, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
Example 6
The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface comprises a substrate layer, wherein a glue separating film and a bonding layer are sequentially arranged above the substrate layer, the continuous machine-made glass fiber reinforced plastic further comprises a gel coat layer, the gel coat layer is arranged below the substrate layer, and the substrate layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 1 part of curing agent, 1.2 parts of accelerator, 18 parts of stitch-bonded felt, 20 parts of warp-knitted fabric and 20 parts of electronic fiber fabric, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 16 parts of flexible unsaturated resin, 1 part of curing agent, 1.2 parts of accelerator and 0.4 part of ultraviolet absorbent, wherein the bonding layer material is a fiber fabric.
The preparation process of the continuous machine-made glass fiber reinforced plastic with the friendly bonding interface described in the embodiment 6 includes the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw materials to the bottom of the cured gel coat layer, adding a stitch-bonded felt, a warp-knitted fabric and an electronic fiber fabric in the matrix layer raw materials, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
And (3) performance detection:
first, strength and hardness detection
The glass fiber reinforced plastic products of examples 1 to 6 were tested for strength and hardness, and the test results are shown in table 1:
TABLE 1
| Detecting items | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Basis of detection |
| Tensile strength MPa | 260 | 265 | 287 | 235 | 230 | 285 | GB/T1447-2005 |
| Bending strength MPa | 423 | 431 | 457 | 460 | 458 | 455 | GB/T1449-2005 |
| Density g/cm 3 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | GB/T1463-2005 |
| Hardness HBa | 40 | 41 | 46 | 48 | 46 | 45 | GB/T3854-2005 |
The detection shows that the glass fiber reinforced plastic composite material adopts the glass fiber chopped yarns, chopped strand mats, checkered cloth, multi-axial cloth and other fiber reinforced materials, has high glass fiber content and excellent mechanical property, and has the Babbitt hardness of more than 45 HBa.
Second, aging resistance test
The glass fiber reinforced plastic products obtained from the above examples 4-6 were tested for their aging resistance (according to GB/T14552-2008), which simulates damage caused by solar uv light, the materials were tested for aging resistance by exposing them to controlled high temperature light, uv lamps were used to simulate the radiation of sunlight, condensation and water sprays were used to simulate dew and rain, and only days or weeks were required for uv irradiation equipment to simulate damage, including discoloration and color changes, that would occur outdoors today over a period of months or even years. For example, the total radiation intensity is 1120W/m 2 At this time, the measured irradiance value is 0.68 at 340nm, which can be calculated by calculation, and the set value is 0.68W/m 2 340nm, corresponding to 6.55 times the outdoor irradiance. However, UV aging is closely related to temperature, and with reference to the guangzhou annual average temperature of 21.8 degrees, the empirical assessment is that the aging effect is enhanced by about 1.5 times when the temperature is raised by 1 time, so that at a set temperature of 60 ℃, there are 60/21.8 x 1.5 x 6.55-27 days, i.e.: a1 day UV test was performed, which corresponds to an outdoor aging effect of 27 days.
The detection conditions and results of this example are shown in tables 2 to 5 below:
TABLE 2
| Illumination time h | Drenching with rain h | Laser irradiation power W | Temperature of blackboard | Number of cycles | The result of the detection |
| 8 | 4 | 1.2 | 60 | 25 | See (watch 5) |
Table 3 (example 4)
TABLE 4 (example 5)
TABLE 5 (example 6)
The color difference of the sample obtained by the detection and calculation is qualified, which shows that the glass fiber reinforced plastic product also has good weather resistance and aging resistance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and variations which do not require inventive efforts and are made by those skilled in the art are still within the scope of the present invention.
Claims (9)
1. The continuous machine-made glass fiber reinforced plastic with the friendly bonding interface is characterized by comprising a base body layer, wherein an adhesive isolating film and a bonding layer are sequentially arranged above the base body layer, and the base body layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 1-5 parts of curing agent and 0.5-2 parts of accelerator, wherein the bonding layer material is any one of surface felt, non-woven fabric, glass fiber felt, stitch-bonded felt and fiber fabric.
2. The continuous machine-made glass reinforced plastic with the friendly bonding interface as claimed in claim 1, further comprising a gel coat layer, wherein the gel coat layer is disposed below the substrate layer, and the gel coat layer comprises the following raw materials by weight: 100 parts of unsaturated polyester resin, 10-20 parts of flexible unsaturated resin, 1-5 parts of curing agent and 0.5-2 parts of accelerator.
3. The continuous machine-made glass reinforced plastic with friendly bonding interface as claimed in claim 2, wherein the gel coat layer further comprises 0.3-0.5 parts of ultraviolet absorber.
4. The continuous machine-made glass reinforced plastic with the friendly bonding interface as claimed in any one of claims 1-3, wherein the matrix layer further comprises 20-70 parts of fiber reinforced material.
5. The continuous machine-made glass reinforced plastic with the friendly bonding interface as claimed in claim 4, wherein the fiber reinforced material is any one or more of glass fiber chopped yarns, chopped strand mats, plaid fabrics, multiaxial fabrics, stitch-bonded mats, warp-knitted fabrics, electronic fiber fabrics.
6. The continuous machine-made glass reinforced plastic with the friendly bonding interface as claimed in claim 2, wherein the substrate layer comprises the following raw materials by weight: 100 parts of unsaturated polyester resin, 2 parts of curing agent and 1 part of accelerator, wherein the gel coat layer comprises the following raw materials in parts by weight: 100 parts of unsaturated polyester resin, 15 parts of flexible unsaturated resin, 2 parts of curing agent and 1 part of accelerator.
7. The process for preparing continuous machine-made glass fiber reinforced plastic with friendly bonding interface according to claim 1, comprising the following steps:
(1) respectively injecting the raw materials of the substrate layer into a stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, feeding a substrate layer raw material which is stirred and mixed to a bottom film to obtain a substrate layer, and controlling the thickness of the substrate layer according to the requirement of a finished product;
(3) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(4) a product thickness-fixing press roller;
(5) heating and curing at 80 ℃ in a curing oven;
(6) and (6) rolling and packaging.
8. The process for preparing continuous machine-made glass fiber reinforced plastic with friendly bonding interface according to claim 2, characterized by comprising the following steps:
(1) respectively injecting the raw materials of the matrix layer and the gel coat layer into different stirring tanks in proportion, and fully stirring and mixing in the stirring tanks;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) pressing the product into a fixed thickness roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
9. The process for preparing continuous machine-made glass fiber reinforced plastic with friendly bonding interface according to claim 4, characterized by comprising the following steps:
(1) injecting unsaturated polyester resin, curing agent and accelerator in the raw materials of the matrix layer into a stirring tank in proportion, fully stirring and mixing in the stirring tank, injecting the raw materials of the gel coat layer into another stirring tank in proportion, and fully stirring and mixing in the stirring tank;
(2) firstly, gel coat feeding is carried out, and the stirred and mixed gel coat raw material is automatically sprayed to a gel coat basement membrane to obtain a gel coat layer;
(3) heating and curing at 80 ℃ in a curing oven;
(4) carrying out matrix feeding, feeding the stirred and mixed matrix layer raw material to the bottom of the cured gel coat layer, adding the fiber reinforced material in the matrix layer raw material, and controlling the thickness of the matrix layer according to the requirement of a finished product;
(5) laying the pre-compounded glue-isolating film and adhesive layer composite material on the base layer;
(6) a product thickness-fixing press roller;
(7) heating and curing at 80 ℃ in a curing oven;
(8) and (6) rolling and packaging.
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| CN117621567A (en) * | 2023-12-11 | 2024-03-01 | 山东源仕新材料有限公司 | Glass fiber reinforced plastic plate, composite plate, preparation method and application thereof |
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