CN111439011B - High-strength flame-retardant plastic cover plate material for cable trench and preparation method thereof - Google Patents

High-strength flame-retardant plastic cover plate material for cable trench and preparation method thereof Download PDF

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Publication number
CN111439011B
CN111439011B CN202010139934.9A CN202010139934A CN111439011B CN 111439011 B CN111439011 B CN 111439011B CN 202010139934 A CN202010139934 A CN 202010139934A CN 111439011 B CN111439011 B CN 111439011B
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parts
layer
cover plate
following components
retardant
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CN111439011A (en
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颜录科
吉凌仝
骆春佳
赖金星
陆钰铨
王朝杰
冯志华
许瑞宁
王书涛
罗燕平
文展
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Changan University
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Changan University
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Abstract

The invention provides a high-strength flame-retardant plastic cover plate material for a cable duct and a preparation method thereof, wherein the cover plate material sequentially comprises a flame-retardant layer, a first foaming layer, a base layer, a second foaming layer and a surface layer, and the cover plate is prepared by sequentially laminating and hot-pressing the flame-retardant layer, the first foaming layer, the base layer, the second foaming layer and the surface layer. The base layer is arranged for improving the strength of the cover plate, the impact resistance and the bending resistance of the cover plate are improved, the flame-retardant layer is arranged on the inner layer of the cover plate, and the flame-retardant performance and the heat-insulating performance of the cover plate are improved; the top layer can improve the ageing resistance, the temperature toleration and the wear resistance of apron, and first foaming layer and second foaming layer are located fire-retardant layer respectively simultaneously, the basic unit, between the top layer, can improve the three-layer cohesion, balance the stress between the three-layer, improve the bending resistance of apron material, improve the heat-proof quality of apron and make the more lightweight of high strength apron simultaneously. The cover plate has good mechanical properties, flame retardance, ageing resistance and the like.

Description

High-strength flame-retardant plastic cover plate material for cable trench and preparation method thereof
Technical Field
The invention relates to a high-strength flame-retardant plastic cover plate material for a cable duct and a preparation method thereof.
Background
The cable trough cover plate mould is basically made of two materials, namely ABS resin particles and PP (polypropylene) plastics, wherein the PP plastics (polypropylene) is another excellent resin variety developed after nylon, and the PP has good stress cracking resistance and very high bending fatigue life and is commonly called as 'crevasse'. ABS engineering plastics, namely PC + ABS (engineering plastic alloy), is called plastic alloy in Chinese name of chemical industry, ABS resin particles are generally opaque, have light ivory color, are non-toxic and tasteless, have the characteristics of toughness, hardness and rigidity, have the advantages of excellent impact strength, good size stability and the like. The development of cover plates is still pursuing the need for cheaper, lighter, stronger and more flame retardant properties.
Disclosure of Invention
The invention provides a high-strength flame-retardant plastic cover plate material for a cable duct and a preparation method thereof, wherein the cover plate material sequentially comprises a flame-retardant layer, a first foaming layer, a base layer, a second foaming layer and a surface layer, and the cover plate is prepared by sequentially laminating and hot-pressing the flame-retardant layer, the first foaming layer, the base layer, the second foaming layer and the surface layer. The base layer is arranged for improving the strength of the cover plate, the impact resistance and the bending resistance of the cover plate are improved, the flame-retardant layer is arranged on the inner layer of the cover plate, and the flame-retardant performance and the heat-insulating performance of the cover plate are improved; the top layer can improve the ageing resistance, the temperature toleration and the wear resistance of apron, and first foaming layer and second foaming layer are located fire-retardant layer respectively simultaneously, the basic unit, between the top layer, can improve the three-layer cohesion, balance the stress between the three-layer, improve the bending resistance of apron material, improve the heat-proof quality of apron and make the more lightweight of high strength apron simultaneously. The cover plate has good mechanical properties, flame retardance, ageing resistance and the like.
The specific scheme is as follows:
the utility model provides a fire-retardant type plastics apron material that excels in for cable pit which characterized in that: the cover plate material sequentially comprises a flame-retardant layer, a first foaming layer, a base layer, a second foaming layer and a surface layer, and the cover plate is prepared by sequentially laminating and hot-pressing the flame-retardant layer, the first foaming layer, the base layer, the second foaming layer and the surface layer; the flame-retardant layer consists of the following components: 60-70 parts of polyethylene, 2-4 parts of silane coupling agent, 40-44 parts of nano aluminum hydroxide, 13-17 parts of ammonium polyphosphate, 5-7 parts of polyvinyl alcohol, 22-28 parts of glass fiber and 13-17 parts of flame retardant; the flame retardant consists of the following components: 4-8 parts of sodium bicarbonate, 3-6 parts of halloysite nanotubes, 0.5-2 parts of titanium dioxide and 1-3 parts of pentaerythritol bisdimethylsilicate;
the first foamed layer consists of the following components: 70-80 parts of polypropylene, 4-6 parts of a polypropylene foaming agent, 5-7 parts of polymethyl methacrylate, 1-3 parts of cage-like silsesquioxane, 6-8 parts of epoxy resin, 3-5 parts of polyethylene glycol, 4-6 parts of carboxymethyl cellulose, 16-20 parts of short carbon fiber, 4-6 parts of polyethylene octene co-elastomer, 18-22 parts of talcum powder, 6-10 parts of calcium stearate, 13-17 parts of a silane coupling agent and 8-12 parts of sodium bicarbonate;
the base layer consists of the following components: 33-37 parts of polyimide fiber, 25-35 parts of graphene/glass composite fiber, 18-22 parts of polybutylene terephthalate, 10-15 parts of maleic anhydride grafted polyethylene, 1-3 parts of isopropyl triisostearate, 1-3 parts of pentaerythritol bis (dimethyl silicate) and 4-6 parts of talcum powder;
the second foamed layer consists of the following components: 80-100 parts of PVC resin, 15-25 parts of CPVC powder, 4-6 parts of pentaerythritol bisdimethylsilicate, 6-10 parts of magnesium oxide, 6-10 parts of silane coupling agent, 25-30 parts of polypropylene foaming agent, 25-30 parts of calcium carbonate and 10-20 parts of talcum powder;
the surface layer consists of the following components: 35-45 parts of polyethylene, 6-10 parts of short glass fiber, 8-12 parts of alumina, 4-8 parts of a copolymer of maleic anhydride and methyl acrylate, 2-4 parts of maleic half ester, 1-3 parts of acrylonitrile-styrene-butadiene copolymer, 1-3 parts of p-phenylenediamine, 4-6 parts of a silane coupling agent, 0.5-2 parts of an ultraviolet absorbent and 0.5-2 parts of an antistatic agent.
Further, the flame-retardant layer consists of the following components: 65 parts of polyethylene, 3 parts of a silane coupling agent, 42 parts of nano aluminum hydroxide, 15 parts of ammonium polyphosphate, 6 parts of polyvinyl alcohol, 25 parts of glass fiber and 15 parts of a flame retardant; the flame retardant consists of the following components: 6 parts of sodium bicarbonate, 5 parts of halloysite nanotubes, 1 part of titanium dioxide and 2 parts of pentaerythritol dimethyl disilicate.
Further, the first foaming layer consists of the following components: 76 parts of polypropylene, 5 parts of polypropylene foaming agent, 6 parts of polymethyl methacrylate, 2 parts of cage-like silsesquioxane, 7 parts of epoxy resin, 4 parts of polyethylene glycol, 5 parts of carboxymethyl cellulose, 18 parts of short carbon fiber, 5 parts of polyethylene octene co-elastomer, 20 parts of talcum powder, 8 parts of calcium stearate, 15 parts of silane coupling agent and 10 parts of sodium bicarbonate;
further, the base layer consists of the following components: 35 parts of polyimide fiber, 30 parts of graphene/glass composite fiber, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 2 parts of isopropyl triisostearate, 2 parts of pentaerythritol bis (dimethyl silicate) and 5 parts of talcum powder;
further, the second foamed layer consists of the following components: 90 parts of PVC resin, 20 parts of CPVC powder, 5 parts of pentaerythritol bisdimethylsilicate, 8 parts of magnesium oxide, 8 parts of a silane coupling agent, 30 parts of a polypropylene foaming agent, 30 parts of calcium carbonate and 15 parts of talcum powder;
further, the surface layer consists of the following components: 40 parts of polyethylene, 8 parts of short glass fiber, 10 parts of aluminum oxide, 6 parts of a copolymer of maleic anhydride and methyl acrylate, 3 parts of maleic half ester, 2 parts of acrylonitrile-styrene-butadiene copolymer, 2 parts of p-phenylenediamine, 3 parts of a silane coupling agent, 1 part of an ultraviolet absorbent and 1 part of an antistatic agent.
Further, the graphene/glass composite fiber is prepared by the following method: (1) mixing the microporous glass fiber with sodium carboxymethylcellulose, adding graphene, dispersing in acetone, uniformly stirring, transferring to a vacuum heating kettle, pressurizing to 30MPa at 85 ℃, standing for 1h, filtering and drying to obtain graphene-loaded glass fiber; (2) soaking the graphene-loaded glass fiber prepared in the step (1) in a barium nitrate solution with the mass concentration of 40% for 1h, taking out the glass fiber, transferring the glass fiber into a ammonium dihydrogen phosphate solution with the mass concentration of 20%, standing, and generating barium phosphate and barium hydrogen phosphate crystal precipitates in micropores of the glass fiber, so that barium phosphate and barium hydrogen phosphate particles are assembled in internal pores of the glass fiber to encapsulate graphene, thereby forming the graphene/glass composite fiber.
Further, a preparation method for preparing the cover plate material comprises the steps of respectively feeding raw materials of each layer of the cover plate into a double-screw extruder, then advancing the melt to a screen changer, and then reaching a distributor; and the material treated by the distributor enters a die, is shaped in a shaping table, is transferred to a cooling bracket through a traction device for cooling, is transferred to a slitting saw for slitting through the traction device, is transversely cut through a transverse cutting saw platform, and is moved out from a conveying platform, so that the forming of each layer is completed, and then the layers are sequentially laminated and hot-pressed according to the sequence to obtain the cover plate.
The thickness of each layer is not particularly required, and can be adjusted according to actual needs.
The invention has the following beneficial effects:
1) the cover plate is prepared by sequentially laminating and hot-pressing the flame-retardant layer, the first foaming layer, the base layer, the second foaming layer and the surface layer. The base layer provides strength for the cover plate, impact resistance and bending resistance of the cover plate are improved, the flame-retardant layer is arranged on the inner layer of the cover plate, and flame-retardant performance and heat-insulating performance of the cover plate are improved; the surface layer can improve the ageing resistance, the temperature resistance and the wear resistance of the cover plate.
2) And simultaneously, the first foaming layer and the second foaming layer are respectively positioned between the flame-retardant layer, the base layer and the surface layer, so that the bonding force of the three layers can be improved, the stress between the flame-retardant layer, the base layer and the surface layer is balanced, the bending resistance of the cover plate material is improved, the heat-insulating property of the cover plate is improved, and the high-strength cover plate is lighter.
3) The different according to each layer demand sets up different components, and fire-retardant layer has higher fire-retardant and separates the temperature performance, and the basic unit has higher mechanical strength, and the top layer has higher temperature resistant, and resistant old and wear resistance can, and the three-layer complex makes composite board's mechanical strength reinforcing to improve the resistant type and the temperature resistance of panel.
4) The first foaming layer is located on the inner side, the second foaming layer is located on the outer side, the components of the two foaming layers are adjusted according to the requirements of the inner side and the outer side for flame retardant property, temperature and different impact resistance, the first foaming layer has higher heat insulation and flame retardant property, the second foaming layer has higher elastic modulus, the interlayer stress caused by bending can be relieved, and the shock resistance is higher.
Detailed Description
The present invention will be described in more detail below with reference to specific examples, but the scope of the present invention is not limited to these examples.
Examples
Cable pit is with fire-retardant type plastics apron material that excels in, its characterized in that: the cover plate material sequentially comprises a flame-retardant layer, a first foaming layer, a base layer, a second foaming layer and a surface layer, and the cover plate is prepared by respectively putting raw materials of all layers of the cover plate into a double-screw extruder, then pushing a melt into a screen changer and then reaching a distributor; and the material treated by the distributor enters a die, is shaped in a shaping table, is transferred to a cooling bracket through a traction device for cooling, is transferred to a slitting saw for slitting through the traction device, is transversely cut through a transverse cutting saw platform, and is moved out from a conveying platform, so that the forming of each layer is completed, and then the layers are sequentially laminated and hot-pressed according to the sequence to obtain the cover plate.
The thickness of the flame-retardant layer, the thickness of the first foaming layer, the thickness of the base layer, the thickness of the second foaming layer and the thickness of the surface layer are respectively 1 mm.
The graphene/glass composite fiber is prepared by the following method: (1) mixing the microporous glass fiber with sodium carboxymethylcellulose, adding graphene, dispersing in acetone, uniformly stirring, transferring to a vacuum heating kettle, pressurizing to 30MPa at 85 ℃, standing for 1h, filtering and drying to obtain graphene-loaded glass fiber; (2) soaking the graphene-loaded glass fiber prepared in the step (1) in a barium nitrate solution with the mass concentration of 40% for 1h, taking out the glass fiber, transferring the glass fiber into a ammonium dihydrogen phosphate solution with the mass concentration of 20%, standing, and generating barium phosphate and barium hydrogen phosphate crystal precipitates in micropores of the glass fiber, so that barium phosphate and barium hydrogen phosphate particles are assembled in internal pores of the glass fiber to encapsulate graphene, thereby forming the graphene/glass composite fiber.
Example 1
The flame-retardant layer consists of the following components: 60 parts of polyethylene, 2 parts of a silane coupling agent, 40 parts of nano aluminum hydroxide, 13 parts of ammonium polyphosphate, 5 parts of polyvinyl alcohol, 22 parts of glass fiber and 13 parts of a flame retardant; the flame retardant consists of the following components: 4 parts of sodium bicarbonate, 3 parts of halloysite nanotube, 0.5 part of titanium dioxide and 1 part of pentaerythritol bisdimethylsilicate;
the first foamed layer consists of the following components: 70 parts of polypropylene, 4 parts of a polypropylene foaming agent, 5 parts of polymethyl methacrylate, 1 part of cage-like silsesquioxane, 6 parts of epoxy resin, 3 parts of polyethylene glycol, 4 parts of carboxymethyl cellulose, 16 parts of short carbon fiber, 4 parts of polyethylene octene co-elastomer, 18 parts of talcum powder, 6 parts of calcium stearate, 13 parts of a silane coupling agent and 8 parts of sodium bicarbonate;
the base layer consists of the following components: 33 parts of polyimide fiber, 25 parts of graphene/glass composite fiber, 18 parts of polybutylene terephthalate, 10 parts of maleic anhydride grafted polyethylene, 1 part of isopropyl triisostearate, 1 part of pentaerythritol bis (dimethyl silicate) and 4 parts of talcum powder;
the second foamed layer consists of the following components: 80 parts of PVC resin, 15 parts of CPVC powder, 4 parts of pentaerythritol dimethyl silicate, 6 parts of magnesium oxide, 6 parts of a silane coupling agent, 25 parts of a polypropylene foaming agent, 25 parts of calcium carbonate and 10 parts of talcum powder;
the surface layer consists of the following components: 35 parts of polyethylene, 6 parts of short glass fiber, 8 parts of alumina, 4 parts of a copolymer of maleic anhydride and methyl acrylate, 2 parts of maleic half ester, 1 part of acrylonitrile-styrene-butadiene copolymer, 1 part of p-phenylenediamine, 4 parts of a silane coupling agent, 0.5 part of an ultraviolet absorbent and 0.5 part of an antistatic agent.
Example 2
The flame-retardant layer consists of the following components: 70 parts of polyethylene, 4 parts of a silane coupling agent, 44 parts of nano aluminum hydroxide, 17 parts of ammonium polyphosphate, 7 parts of polyvinyl alcohol, 28 parts of glass fiber and 17 parts of a flame retardant; the flame retardant consists of the following components: 8 parts of sodium bicarbonate, 6 parts of halloysite nanotube, 2 parts of titanium dioxide and 3 parts of pentaerythritol dimethyl disilicate;
the first foamed layer consists of the following components: 80 parts of polypropylene, 6 parts of polypropylene foaming agent, 7 parts of polymethyl methacrylate, 3 parts of cage-like silsesquioxane, 8 parts of epoxy resin, 5 parts of polyethylene glycol, 6 parts of carboxymethyl cellulose, 20 parts of short carbon fiber, 6 parts of polyethylene octene co-elastomer, 22 parts of talcum powder, 10 parts of calcium stearate, 17 parts of silane coupling agent and 12 parts of sodium bicarbonate;
the base layer consists of the following components: 37 parts of polyimide fiber, 35 parts of graphene/glass composite fiber, 22 parts of polybutylene terephthalate, 15 parts of maleic anhydride grafted polyethylene, 3 parts of isopropyl triisostearate, 3 parts of pentaerythritol bis (dimethyl silicate) and 6 parts of talcum powder;
the second foamed layer consists of the following components: 100 parts of PVC resin, 25 parts of CPVC powder, 6 parts of pentaerythritol dimethyl silicate, 10 parts of magnesium oxide, 10 parts of a silane coupling agent, 30 parts of a polypropylene foaming agent, 30 parts of calcium carbonate and 20 parts of talcum powder;
the surface layer consists of the following components: 45 parts of polyethylene, 10 parts of short glass fiber, 12 parts of alumina, 8 parts of a copolymer of maleic anhydride and methyl acrylate, 4 parts of maleic half ester, 3 parts of acrylonitrile-styrene-butadiene copolymer, 3 parts of p-phenylenediamine, 6 parts of a silane coupling agent, 2 parts of an ultraviolet absorbent and 2 parts of an antistatic agent.
Example 3
The flame-retardant layer consists of the following components: 65 parts of polyethylene, 3 parts of a silane coupling agent, 42 parts of nano aluminum hydroxide, 15 parts of ammonium polyphosphate, 6 parts of polyvinyl alcohol, 25 parts of glass fiber and 15 parts of a flame retardant; the flame retardant comprises: 6 parts of sodium bicarbonate, 5 parts of halloysite nanotubes, 1 part of titanium dioxide and 2 parts of pentaerythritol dimethyl disilicate.
The first foamed layer consists of the following components: 76 parts of polypropylene, 5 parts of polypropylene foaming agent, 6 parts of polymethyl methacrylate, 2 parts of cage-like silsesquioxane, 7 parts of epoxy resin, 4 parts of polyethylene glycol, 5 parts of carboxymethyl cellulose, 18 parts of short carbon fiber, 5 parts of polyethylene octene co-elastomer, 20 parts of talcum powder, 8 parts of calcium stearate, 15 parts of silane coupling agent and 10 parts of sodium bicarbonate;
the base layer consists of the following components: 35 parts of polyimide fiber, 30 parts of graphene/glass composite fiber, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 2 parts of isopropyl triisostearate, 2 parts of pentaerythritol bis (dimethyl silicate) and 5 parts of talcum powder;
the second foamed layer consists of the following components: 90 parts of PVC resin, 20 parts of CPVC powder, 5 parts of pentaerythritol bisdimethylsilicate, 8 parts of magnesium oxide, 8 parts of a silane coupling agent, 30 parts of a polypropylene foaming agent, 30 parts of calcium carbonate and 15 parts of talcum powder;
the surface layer consists of the following components: 40 parts of polyethylene, 8 parts of short glass fiber, 10 parts of aluminum oxide, 6 parts of a copolymer of maleic anhydride and methyl acrylate, 3 parts of maleic half ester, 2 parts of acrylonitrile-styrene-butadiene copolymer, 2 parts of p-phenylenediamine, 3 parts of a silane coupling agent, 1 part of an ultraviolet absorbent and 1 part of an antistatic agent.
Test and results
And (3) testing tensile property: the tensile rate was 5mm/min, as determined according to ISO 527-2.
And (3) testing the bending property: the bending speed was 2mm/min, as measured according to ISO 178.
The warp deformation resistance is determined by the ratio of the longitudinal shrinkage and the transverse shrinkage, and the size of the test sample is 150mm multiplied by 100mm multiplied by 5 mm.
And (3) testing the impact resistance: the bending speed is 2mm/min according to ISO 179 standard
TABLE 1
Figure BDA0002398727700000101
The cover plate obtained by the invention has various parameters superior to the performance of the existing cover plate, lighter weight, better heat insulation performance and flame retardant performance.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention.

Claims (6)

1. The utility model provides a preparation method of fire-retardant type plastics apron material excels in for preparation cable ditch, the apron material includes fire-retardant layer, first foaming layer, basic unit, second foaming layer and top layer in proper order, the apron is through with fire-retardant layer, first foaming layer, basic unit, second foaming layer and top layer range upon range of hot pressing preparation in proper order and obtain, wherein specifically include: respectively putting the raw materials of each layer of the cover plate into a double-screw extruder, then pushing the melt into a screen changer, and then reaching a distributor; the material processed by the distributor enters a die, is shaped in a shaping table, is transferred to a cooling bracket through a traction device for cooling, is transferred to a slitting saw for slitting through the traction device, is transversely cut through a transverse cutting saw platform, and is moved out from a conveying platform, so that the forming of each layer is completed, and then the layers are sequentially laminated and hot-pressed in sequence to obtain the cover plate;
the flame-retardant layer consists of the following components: 60-70 parts of polyethylene, 2-4 parts of silane coupling agent, 40-44 parts of nano aluminum hydroxide, 13-17 parts of ammonium polyphosphate, 5-7 parts of polyvinyl alcohol, 22-28 parts of glass fiber and 13-17 parts of flame retardant; the flame retardant consists of the following components: 4-8 parts of sodium bicarbonate, 3-6 parts of halloysite nanotubes, 0.5-2 parts of titanium dioxide and 1-3 parts of pentaerythritol bisdimethylsilicate;
the first foamed layer consists of the following components: 70-80 parts of polypropylene, 4-6 parts of a polypropylene foaming agent, 5-7 parts of polymethyl methacrylate, 1-3 parts of cage-like silsesquioxane, 6-8 parts of epoxy resin, 3-5 parts of polyethylene glycol, 4-6 parts of carboxymethyl cellulose, 16-20 parts of short carbon fiber, 4-6 parts of polyethylene octene co-elastomer, 18-22 parts of talcum powder, 6-10 parts of calcium stearate, 13-17 parts of a silane coupling agent and 8-12 parts of sodium bicarbonate;
the base layer consists of the following components: 33-37 parts of polyimide fiber, 25-35 parts of graphene/glass composite fiber, 18-22 parts of polybutylene terephthalate, 10-15 parts of maleic anhydride grafted polyethylene, 1-3 parts of isopropyl triisostearate, 1-3 parts of pentaerythritol bis (dimethyl silicate) and 4-6 parts of talcum powder;
the second foamed layer consists of the following components: 80-100 parts of PVC resin, 15-25 parts of CPVC powder, 4-6 parts of pentaerythritol bisdimethylsilicate, 6-10 parts of magnesium oxide, 6-10 parts of silane coupling agent, 25-30 parts of polypropylene foaming agent, 25-30 parts of calcium carbonate and 10-20 parts of talcum powder;
the surface layer consists of the following components: 35-45 parts of polyethylene, 6-10 parts of short glass fiber, 8-12 parts of alumina, 4-8 parts of a copolymer of maleic anhydride and methyl acrylate, 2-4 parts of maleic half ester, 1-3 parts of acrylonitrile-styrene-butadiene copolymer, 1-3 parts of p-phenylenediamine, 4-6 parts of a silane coupling agent, 0.5-2 parts of an ultraviolet absorbent and 0.5-2 parts of an antistatic agent;
the graphene/glass composite fiber is prepared by the following method: (1) mixing the microporous glass fiber with sodium carboxymethylcellulose, adding graphene, dispersing in acetone, uniformly stirring, transferring to a vacuum heating kettle, pressurizing to 30MPa at 85 ℃, standing for 1h, filtering and drying to obtain graphene-loaded glass fiber; (2) soaking the graphene-loaded glass fiber prepared in the step (1) in a barium nitrate solution with the mass concentration of 40% for 1h, taking out the glass fiber, transferring the glass fiber into a ammonium dihydrogen phosphate solution with the mass concentration of 20%, standing, and generating barium phosphate and barium hydrogen phosphate crystal precipitates in micropores of the glass fiber, so that barium phosphate and barium hydrogen phosphate particles are assembled in internal pores of the glass fiber to encapsulate graphene, thereby forming the graphene/glass composite fiber.
2. The method of claim 1, wherein: the flame-retardant layer consists of the following components: 65 parts of polyethylene, 3 parts of a silane coupling agent, 42 parts of nano aluminum hydroxide, 15 parts of ammonium polyphosphate, 6 parts of polyvinyl alcohol, 25 parts of glass fiber and 15 parts of a flame retardant; the flame retardant consists of the following components: 6 parts of sodium bicarbonate, 5 parts of halloysite nanotubes, 1 part of titanium dioxide and 2 parts of pentaerythritol dimethyl disilicate.
3. The method of claim 1, wherein: the first foamed layer consists of the following components: 76 parts of polypropylene, 5 parts of polypropylene foaming agent, 6 parts of polymethyl methacrylate, 2 parts of cage-like silsesquioxane, 7 parts of epoxy resin, 4 parts of polyethylene glycol, 5 parts of carboxymethyl cellulose, 18 parts of short carbon fiber, 5 parts of polyethylene octene co-elastomer, 20 parts of talcum powder, 8 parts of calcium stearate, 15 parts of silane coupling agent and 10 parts of sodium bicarbonate.
4. The method of claim 1, wherein: the base layer consists of the following components: 35 parts of polyimide fiber, 30 parts of graphene/glass composite fiber, 20 parts of polybutylene terephthalate, 12 parts of maleic anhydride grafted polyethylene, 2 parts of isopropyl triisostearate, 2 parts of pentaerythritol bisdimethyl silicate and 5 parts of talcum powder.
5. The method of claim 1, wherein: the second foamed layer consists of the following components: 90 parts of PVC resin, 20 parts of CPVC powder, 5 parts of pentaerythritol bis (dimethyl silicate), 8 parts of magnesium oxide, 8 parts of a silane coupling agent, 30 parts of a polypropylene foaming agent, 30 parts of calcium carbonate and 15 parts of talcum powder.
6. The method of claim 1, wherein: the surface layer consists of the following components: 40 parts of polyethylene, 8 parts of short glass fiber, 10 parts of alumina, 6 parts of a copolymer of maleic anhydride and methyl acrylate, 3 parts of maleic half ester, 2 parts of acrylonitrile-styrene-butadiene copolymer, 2 parts of p-phenylenediamine, 3 parts of a silane coupling agent, 1 part of an ultraviolet absorbent and 1 part of an antistatic agent.
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CN109294091A (en) * 2018-09-26 2019-02-01 成都新柯力化工科技有限公司 A kind of the graphene flame-retardant master batch and preparation method of reinforced nylon66

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