CN117903543A - High-performance fiber reinforced plastic material and preparation method thereof - Google Patents

Abstract

The application relates to the technical field of plastic preparation, and particularly discloses a high-performance fiber reinforced plastic material and a preparation method thereof. A high-performance fiber reinforced plastic material is mainly prepared from the following raw materials: polyvinyl chloride, silicon carbide fiber, aluminum nitride, an antioxidant, a plasticizer, a compatilizer, a heat conducting agent, an auxiliary agent, boron nitride, a heat stabilizer, a polyurethane elastomer, zinc stearate and N-phenyl maleimide, wherein the auxiliary agent comprises foam carbon, fibrous magnesium oxide and dysprosium oxide, and the heat conducting agent comprises expanded graphite, aluminum oxide and carbon fiber; the preparation method comprises the following steps: weighing polyvinyl chloride, silicon carbide fiber, aluminum nitride, an antioxidant, a plasticizer, a compatilizer, a heat conducting agent, an auxiliary agent, boron nitride, a heat stabilizer, a polyurethane elastomer, zinc stearate and N-phenyl maleimide, and mixing to obtain a mixture; extruding the mixture, and drying to obtain the final product. The plastic prepared by the application has good heat resistance.

Description

High-performance fiber reinforced plastic material and preparation method thereof

Technical Field

The application relates to the technical field of plastic preparation, in particular to a high-performance fiber reinforced plastic material and a preparation method thereof.

Background

Along with the diversity of research and utilization of the polymer materials, the polymer materials are widely applied with the advantages of high strength, easy molding and corrosion resistance. Among them, the shaped phase change material used for indoor temperature adjustment of building mostly adopts resin material as matrix to solve the leakage problem of phase change material. But the heat conductivity coefficient of the resin material is far lower than that of the metal material, and the temperature adjusting efficiency of the phase change material is seriously affected. Compared with other general plastics, the polyvinyl chloride has the advantages of high strength, low cost, strong plasticity and the like, and is widely applied to various fields.

Polyvinyl chloride resin, abbreviated as PVC, is one of the earliest industrialized synthetic resins in the world, and is widely concerned and rapidly developed due to the advantages of excellent performance, low price, wide raw material sources and the like, and the annual output and consumption of the polyvinyl chloride are the second place in the world. Polyvinyl chloride is polymerized by using vinyl chloride as a monomer, so that the polyvinyl chloride has high chlorine content, thereby greatly reducing the dependence of the polyvinyl chloride on petroleum and natural gas, and endowing the polyvinyl chloride with a plurality of excellent properties such as electrical insulation, wear resistance, flame retardance, chemical stability and the like. The polyvinyl chloride resin can be widely applied to the fields of buildings, automobiles, cables, packaging materials and the like by adding additives or producing various plastic products by other methods in the processing process.

However, the c—cl bond in the polyvinyl chloride molecule easily removes the HCl molecule when heated, and introduces an unsaturated bond into the macromolecular chain, which affects the aging resistance and thermal stability of the resin, and limits the application range and application space of the polyvinyl chloride, so when preparing the polyvinyl chloride plastic, a heat stabilizer is usually added to improve the heat resistance of the polyvinyl chloride, and the heat resistance of the prepared polyvinyl chloride plastic still cannot meet the current requirements.

Thus, there is a need to prepare a polyvinyl chloride plastic with excellent heat resistance.

Disclosure of Invention

In order to further improve the heat resistance and the heat conductivity of the polyvinyl chloride plastic, the application provides a high-performance fiber reinforced plastic material and a preparation method thereof.

In a first aspect, the present application provides a high performance fiber reinforced plastic material, which adopts the following technical scheme:

A high-performance fiber reinforced plastic material is mainly prepared from the following raw materials in parts by weight: 70-80 parts of polyvinyl chloride, 5-10 parts of silicon carbide fibers, 5-8 parts of aluminum nitride, 0.1-0.5 part of antioxidants, 0.2-0.6 part of plasticizers, 1-2 parts of compatilizers, 5-8 parts of heat conducting agents, 2-4 parts of auxiliary agents, 2-4 parts of boron nitride, 2-3 parts of heat stabilizers, 5-10 parts of polyurethane elastomers, 0.2-0.5 part of zinc stearate and 1-2 parts of N-phenylmaleimide, wherein the aluminum nitride consists of aluminum nitride with the particle size of 20 mu m and aluminum nitride with the particle size of 2 mu m according to the mass ratio (5-6) of (1-2), the auxiliary agents comprise foam carbon, fibrous magnesium oxide and dysprosium oxide, and the heat conducting agents comprise expanded graphite, aluminum oxide and carbon fibers.

By adopting the technical proposal, the raw materials such as polyvinyl chloride, silicon carbide fiber, aluminum nitride, auxiliary agent, heat conductive agent and the like in the plastic material are reasonably compounded, and under the combined action of other raw materials, the heat conduction and heat resistance of the prepared plastic are convenient to be improved,

The silicon carbide fiber is beryllium-containing silicon carbide fiber, beryllium element in the beryllium-containing silicon carbide fiber is convenient for promoting the generation of silicon dioxide on the surface of the fiber at high temperature, and the surface of the fiber is provided with a silicon dioxide protective layer, so that the prepared fiber has good heat resistance, good heat conductivity and good oxidation resistance;

the aluminum nitride has higher heat conductivity, small thermal expansion coefficient, good thermal stability and strong oxidation resistance;

When the double-grain aluminum nitride is used as a filler for filling, gaps exist among large-grain aluminum nitride, bridge construction is lacked, a heat conduction path is not tight, a matrix is easy to block the transmission of phonons, and the addition of small-grain aluminum nitride can fill gaps among large-grain aluminum nitride, a compact heat conduction network is constructed, and the scattering of phonons in the transmission process is reduced;

The boron nitride is of a lamellar structure, strong covalent bonds exist among atoms in the lamellar structure, the arrangement in the polyvinyl chloride material is highly oriented, a two-dimensional network can be formed in the polyvinyl chloride material, a heat conduction network passage can be formed on a two-dimensional plane, silicon carbide fibers are added to serve as a framework, after the two-dimensional network is formed based on the boron nitride lamellar, three-dimensional heat conduction networks can be built up, and an effective heat conduction passage is provided for phonons;

The auxiliary agent and the heat conducting agent are matched with each other, and act together with raw materials such as boron nitride, aluminum nitride and silicon carbide fibers in the plastic, the silicon carbide fibers, carbon fibers in the heat conducting agent and fiber magnesium oxide in the auxiliary agent form a heat conducting net structure, and meanwhile, foam carbon, dysprosium oxide in the auxiliary agent, aluminum oxide in the heat conducting agent and expanded graphite are convenient for improving the compactness of the heat conducting net structure, so that the occupied area of the heat conducting net structure in the plastic is further improved, and the heat conductivity and heat resistance of the plastic are further improved.

Preferably, the expanded graphite is modified expanded graphite, and the preparation method of the modified expanded graphite comprises the following steps: s1, mixing lauric acid, capric acid and palmitic acid, and heating to obtain a mixture; s2, melting the mixture, then adding the expanded graphite, the graphene sheets and the polyvinylpyrrolidone, and drying to obtain expanded graphite I; s3, mixing the first expanded graphite with acrylic emulsion and alumina, then adding boron nitride nano-sheets, drying and grinding to obtain second expanded graphite; s4, stirring and mixing the expanded graphite II and tris buffer solution, then adding dopamine hydrochloride, carrying out water bath, standing and cooling, carrying out suction filtration and washing, and drying to obtain expanded graphite III; s5, mixing the expanded graphite III with water to obtain a dispersion liquid, immersing the polyurethane open-cell foam in the dispersion liquid, drying, hot-pressing, crushing and grinding to obtain the polyurethane open-cell foam.

According to the technical scheme, the expanded graphite is modified, the surface of the outer layer of the expanded graphite is wrapped with the mixture, the mixture is prepared from three components of lauric acid, capric acid and palmitic acid, the three components of lauric acid, capric acid and palmitic acid have the effects of absorbing and releasing heat, then the outer layer of the mixture is wrapped with the boron nitride nanosheets to form the expanded graphite II, the boron nitride nanosheets are good in heat resistance and heat conductivity, the influence of high temperature on the mixture is reduced, the expanded graphite III is assembled and evenly wrapped on the polyurethane open-cell foam skeleton through hydrogen bonds, the expanded graphite III wrapped on the polyurethane open-cell foam skeleton is closely arranged and connected with each other on the skeleton to form a secondary three-dimensional continuous heat conducting network structure, heat can be transmitted through the continuous network formed by the continuous three-dimensional polyurethane open-cell foam skeleton, and the heat is transmitted through the continuous network formed by the expanded graphite III, so that the interface heat resistance of plastics is reduced, the heat conductivity of plastics is improved, and the heat resistance of plastics is further improved.

Preferably, the silicon carbide fiber is a modified silicon carbide fiber, and the preparation method of the modified silicon carbide fiber comprises the following steps: mixing hot melt adhesive, acrylic emulsion and tetrapod-like oxidized whiskers to obtain pretreated acrylic emulsion, mixing expanded graphite and pretreated acrylic emulsion to obtain pretreated expanded graphite, mixing pretreated expanded graphite and silicon carbide fibers, and drying to obtain pretreated silicon carbide fibers; mixing acrylamide, N' -methylene bisacrylamide, ethylene glycol and water, performing ultrasonic treatment to obtain a reaction solution, mixing the reaction solution and octyl phenol polyoxyethylene ether, adding molten heptadecanol, stirring, adding pretreated silicon carbide fibers, adding hydrogen peroxide and sodium sulfite, and drying to obtain the finished product.

Through adopting above-mentioned technical scheme, carry out the modification to the carborundum fibre, cladding four needle-like zinc oxide whisker layer in proper order at carborundum fibre skin, the expanded graphite layer, the polyacrylamide layer, the setting on polyacrylamide layer is convenient for mutually support with the compatilizer, improve the compatibility between carborundum fibre and the polyvinyl chloride jointly, the setting on expanded graphite layer is convenient for further improve carborundum fibre's thermal conductivity, contain four needle-like zinc oxide whisker and hot melt adhesive in the preliminary treatment acrylic emulsion, four needle-like zinc oxide whisker is convenient for improve the thermal conductivity of acrylic emulsion on the one hand, on the one hand be convenient for improve the adhesive strength of acrylic emulsion on the surface of expanded graphite, and the hot melt adhesive demonstrates the viscidity at extrusion process, and then adhere the expanded graphite on carborundum fibre surface, and then improve carborundum fibre's thermal conductivity and heat resistance.

Preferably, the aluminum nitride is modified aluminum nitride, and the preparation method of the modified aluminum nitride comprises the following steps: hydroxylating aluminum nitride to obtain aluminum nitride I; mixing and reacting aluminum nitride I with hydrogen-containing polysiloxane and an alkali catalyst to obtain aluminum nitride II; uniformly mixing aluminum nitride II with epoxy resin, adding platinum, and mixing to obtain the final product.

By adopting the technical scheme, after the aluminum nitride is coated and modified by the epoxy resin, the free energy of the surface of the aluminum nitride is reduced, the attractive force among particles is reduced, and the aluminum nitride is easier to disperse in a rubber matrix; and the addition of the epoxy resin enhances the connection effect between aluminum nitride and polyvinyl chloride and improves the formation rate of the heat conducting net chain in the system, thereby improving the heat conductivity of the polyvinyl chloride.

Preferably, the auxiliary agent consists of foam carbon, fibrous magnesia and dysprosium oxide according to the mass ratio of (2-4): (3-5): (1-2).

By adopting the technical scheme, the auxiliary agent is prepared by compounding three components of carbon foam, fibrous magnesium oxide and dysprosium oxide, and the proportion of the three components is adjusted, so that the proportion of the three components is optimal, the addition of the dysprosium oxide is convenient for improving the thermal stability of plastics, and meanwhile, the mechanical property of the plastics is improved; fibrous magnesium oxide, silicon carbide fibers and carbon fibers in a heat conducting agent are matched with each other, a heat conducting network is formed in the plastic in a lap joint mode, foam carbon and dysprosium oxide are distributed on the surface of the heat conducting network and in network spaces, so that the contact area between the heat conducting network and other raw materials in the plastic is increased, and the heat conductivity of the plastic is further improved.

Preferably, the heat conducting agent consists of expanded graphite, aluminum oxide and carbon fiber in the mass ratio of (1-2) (4-5) (1-2).

Through adopting above-mentioned technical scheme, the heat conduction agent is obtained by the compounding of expanded graphite, aluminium oxide, carbon fiber three components, adjusts the ratio of three components for the ratio of three components reaches the best, and fibrous magnesium oxide cooperates in carbon fiber and the carborundum fibre, the auxiliary agent, forms heat conduction network structure, and aluminium oxide, expanded graphite are filled on heat conduction network structure surface, are convenient for further improve heat conduction network structure's heat conductivity, and then improve plastics material's heat conductivity and heat resistance.

Preferably, the alumina consists of spherical alumina, fibrous alumina and flaky alumina in the mass ratio of (5-6): (1-2): (3-4).

By adopting the technical scheme, the alumina is compounded from three states of spherical alumina, fibrous alumina and flaky alumina, and the proportion of the three states of alumina is adjusted so that the proportion of the three states of alumina is optimal, wherein the flaky alumina tends to be arranged near the spherical alumina based on Van der Waals force, so that the contact between fillers is more sufficient; the spherical alumina plays a role in guiding, is more beneficial to the formation of a heat conduction network, has good dispersibility and steric hindrance, and can promote the better dispersion of the flaky alumina instead of stacking. The aluminum oxide can induce the boron nitride to be arranged on the surface of the polyolefin composite material, so that a heat conduction network can be formed effectively, and the heat conduction of the polyolefin composite material can be improved.

Preferably, the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to the mass ratio of (1-2) to (3-5).

Preferably, the plasticizer consists of dioctyl phthalate, nano calcium carbonate and N-methyl pyrrolidone according to the mass ratio of (3-4) (5-8) (1-2).

By adopting the technical scheme, dioctyl phthalate and N-methylpyrrolidone are matched with each other, so that the mechanical property of the prepared plastic is improved, the nano calcium carbonate has a large number of surface atoms and large specific surface area, unsaturated residual bonds are arranged on the surface, the nano calcium carbonate is convenient to combine with dioctyl phthalate and N-methylpyrrolidone, and meanwhile, the movement of molecular chains of dioctyl phthalate and N-methylpyrrolidone is limited, the migration of the dioctyl phthalate and the N-methylpyrrolidone is delayed, and the mechanical property of the plastic is improved.

In a second aspect, the application provides a preparation method of a high-performance fiber reinforced plastic material, which adopts the following technical scheme:

a preparation method of a high-performance fiber reinforced plastic material comprises the following steps:

(1) Weighing polyvinyl chloride, silicon carbide fiber, aluminum nitride, an antioxidant, a plasticizer, a compatilizer, a heat conducting agent, an auxiliary agent, boron nitride, a heat stabilizer, a polyurethane elastomer, zinc stearate and N-phenyl maleimide, and mixing to obtain a mixture;

(2) Extruding the mixture obtained in the step (1), and drying to obtain the final product.

By adopting the technical scheme, the plastic material is simple in preparation process, and the raw materials are matched with each other, so that the prepared plastic is good in mechanical property and thermal conductivity and heat resistance.

In summary, the application has the following beneficial effects:

1. According to the high-performance fiber reinforced plastic material, the auxiliary agent is added to be matched with the heat conduction agent, and the high-performance fiber reinforced plastic material is combined with raw materials such as boron nitride, aluminum nitride and silicon carbide fibers to act together, the silicon carbide fibers, carbon fibers in the heat conduction agent and fiber magnesium oxide in the auxiliary agent form a heat conduction net structure, and meanwhile, foam carbon, dysprosium oxide in the auxiliary agent, aluminum oxide in the heat conduction agent and expanded graphite are convenient to improve the compactness of the heat conduction net structure, so that the heat conductivity and heat resistance of the plastic are improved.

2. The heat conducting agent in the high-performance fiber reinforced plastic material is the modified expanded graphite, the modified expanded graphite is prepared by wrapping a mixture on the surface of an outer layer of the expanded graphite, the mixture is prepared from three components of lauric acid, capric acid and palmitic acid, then a boron nitride nano sheet is wrapped on the outer layer of the mixture to form expanded graphite II, the expanded graphite III is assembled and uniformly wrapped on a polyurethane open-cell foam skeleton through hydrogen bonds, the expanded graphite III wrapped on the polyurethane open-cell foam skeleton is closely arranged and mutually connected on the skeleton to form a secondary three-dimensional continuous heat conducting network structure, heat can be transmitted through the continuous three-dimensional polyurethane open-cell foam skeleton, and the heat conducting agent can be transmitted through a continuous network formed by the expanded graphite III, has a double heat conducting network structure, and improves the heat conductivity and heat resistance of plastics.

Detailed Description

The present application will be described in further detail with reference to examples.

The present application will be described more fully hereinafter in order to facilitate an understanding of the present application. This application may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The raw materials of the examples and comparative examples of the present application are commercially available in general except for the specific descriptions.

The silicon carbide fiber is beryllium-containing silicon carbide fiber, and the preparation method of the beryllium-containing silicon carbide fiber comprises the following steps: mixing beryllium acetylacetonate, polycarbosilane and dimethylbenzene according to a mass ratio of 10:2:100, vacuumizing, filling nitrogen, repeating for 5 times, slowly heating under the protection of nitrogen, preserving heat at 140 ℃, fully distilling the dimethylbenzene, continuously heating to 250 ℃, reacting for 5 hours, cooling to room temperature, and drying to obtain the beryllium-containing polycarbosilane; grinding beryllium-containing polycarbosilane into powder, heating to 320 ℃ to melt the beryllium-containing polycarbosilane, preserving heat for 1h, removing bubbles, extruding the melted beryllium-containing polycarbosilane from a spinneret orifice under the pressure of 0.3MPa, then placing the extruded beryllium-containing polycarbosilane in an oven, heating to 180 ℃ at the heating rate of 10 ℃/min, and preserving heat for 3h to obtain the finished product.

Examples

Example 1

The high-performance fiber reinforced plastic material of the embodiment comprises the following raw materials by weight: 70kg of polyvinyl chloride, 5kg of silicon carbide fiber, 5kg of aluminum nitride, 0.1kg of antioxidant, 0.2kg of plasticizer, 1kg of compatilizer, 5kg of heat conducting agent, 2kg of auxiliary agent, 2kg of boron nitride, 2kg of heat stabilizer, 5kg of polyurethane elastomer, 0.2kg of zinc stearate and 1kg of N-phenyl maleimide; the aluminum nitride consists of aluminum nitride with the grain diameter of 20 mu m and aluminum nitride with the grain diameter of 2 mu m according to the mass ratio of 5:1; the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to the mass ratio of 1:3; the plasticizer consists of dioctyl phthalate, nano calcium carbonate and N-methyl pyrrolidone according to the mass ratio of 3:5:1; the compatilizer consists of maleic anhydride grafted polyethylene and maleic anhydride grafted ABS according to the mass ratio of 1:1; the heat conducting agent consists of expanded graphite, aluminum oxide and carbon fiber according to the mass ratio of 1:4:1; the alumina consists of spherical alumina, fibrous alumina and flaky alumina according to the mass ratio of 5:1:3; the auxiliary agent consists of foam carbon, fibrous magnesia and dysprosium oxide according to the mass ratio of 2:3:1, and the heat stabilizer is zinc stannate hydroxide.

The preparation method of the high-performance fiber reinforced plastic material comprises the following steps:

(1) Weighing polyvinyl chloride, silicon carbide fiber, aluminum nitride, an antioxidant, a plasticizer, a compatilizer, a heat conducting agent, an auxiliary agent, boron nitride, a heat stabilizer, a polyurethane elastomer, zinc stearate and N-phenyl maleimide, and mixing to obtain a mixture;

(2) Extruding the mixture obtained in the step (1), and drying to obtain the final product. Wherein the extrusion is performed in a twin screw extruder; the extrusion temperature is 180 ℃; the drying temperature was 70℃and the drying time was 20 hours.

Example 2

The high performance fiber reinforced plastic material of this example differs from example 1 in that: the material comprises the following raw materials by weight: 80kg of polyvinyl chloride, 10kg of silicon carbide fiber, 8kg of aluminum nitride, 0.5kg of antioxidant, 0.6kg of plasticizer, 2kg of compatilizer, 8kg of heat conducting agent, 4kg of auxiliary agent, 4kg of boron nitride, 3kg of heat stabilizer, 10kg of polyurethane elastomer, 0.5kg of zinc stearate and 2kg of N-phenyl maleimide; the aluminum nitride consists of aluminum nitride with the grain diameter of 20 mu m and aluminum nitride with the grain diameter of 2 mu m according to the mass ratio of 6:2; the antioxidant consists of an antioxidant 1010 and an antioxidant 168 according to the mass ratio of 2:5; the plasticizer consists of dioctyl phthalate, nano calcium carbonate and N-methyl pyrrolidone according to the mass ratio of 4:8:2; the heat conducting agent consists of expanded graphite, aluminum oxide and carbon fiber according to the mass ratio of 2:5:2; the alumina consists of spherical alumina, fibrous alumina and flaky alumina according to the mass ratio of 6:2:4; the auxiliary agent consists of foam carbon, fibrous magnesia and dysprosium oxide according to the mass ratio of 4:5:2.

Example 3

The high performance fiber reinforced plastic material of this example differs from example 2 in that: the preparation method of the modified expanded graphite comprises the following steps: s1, mixing lauric acid, capric acid and palmitic acid according to a mass ratio of 3:5:2, and mixing for 2 hours at 80 ℃ under the condition of a stirring speed of 500r/min to obtain a mixture; s2, melting the mixture, then adding the expanded graphite, the graphene sheets and the polyvinylpyrrolidone, and drying at 60 ℃ for 5 hours to obtain expanded graphite I; wherein the mass ratio of the mixture to the expanded graphite to the graphene sheets to the polyvinylpyrrolidone is 5:2:1:0.5; s3, mixing the first expanded graphite with acrylic emulsion and alumina according to a mass ratio of 3:1:0.5, then adding boron nitride nano-sheets, drying at 80 ℃ for 2 hours, and grinding to obtain second expanded graphite; wherein, the mass ratio of the first expanded graphite to the boron nitride nano-sheet is 1:2; s4, stirring and mixing the expanded graphite II and tris buffer solution according to the mass ratio of 1:5, then adding dopamine hydrochloride, stirring for 6 hours in a water bath at 60 ℃, standing and cooling, filtering and washing, and drying in an oven to obtain expanded graphite III; wherein the mass ratio of the dopamine hydrochloride to the expanded graphite II is 3:1; the drying temperature is 70 ℃; s5, mixing the expanded graphite III with water according to the mass ratio of 1:20 to obtain a dispersion liquid, soaking the polyurethane open-cell foam in the dispersion liquid for 30min, drying, hot-pressing, crushing and grinding to obtain the polyurethane open-cell foam. the pH of the tris buffer was 8.5. The hot pressing temperature in the step S5 is 175 ℃ and the hot pressing time is 10min; the hot pressing pressure is 10MPa.

Example 4

The high performance fiber reinforced plastic material of this example differs from example 3 in that: the silicon carbide fiber is modified silicon carbide fiber, and the preparation method of the modified silicon carbide fiber comprises the following steps: mixing hot melt adhesive, acrylic emulsion and tetrapod-like oxidized whiskers according to a mass ratio of 1:10:2 to obtain pretreated acrylic emulsion, mixing expanded graphite and pretreated acrylic emulsion according to a mass ratio of 1:1 to obtain pretreated expanded graphite, mixing pretreated expanded graphite and silicon carbide fibers according to a mass ratio of 1:2, and drying to obtain pretreated silicon carbide fibers; mixing acrylamide, N' -methylene bisacrylamide, ethylene glycol and water according to a mass ratio of 1.6:0.4:0.1:5, performing ultrasonic treatment to obtain a reaction liquid, mixing the reaction liquid and octyl phenol polyoxyethylene ether according to a mass ratio of 10:1, adding molten heptadecanol, stirring, then adding pretreated silicon carbide fibers, finally adding hydrogen peroxide and sodium sulfite, and drying to obtain the modified silicon carbide fiber. Wherein the mass ratio of the heptadecanol to the octyl phenol polyoxyethylene ether is 4:0.3; the mass ratio of the hydrogen peroxide to the sodium sulfite to the heptadecanol is 0.03:0.55:4; the drying is carried out in an oven at a drying temperature of 30 ℃.

Example 5

The high performance fiber reinforced plastic material of this example differs from example 4 in that: the preparation method of the modified aluminum nitride comprises the following steps: oxidizing aluminum nitride in a box furnace for 1h to obtain aluminum nitride I; wherein the oxidation temperature is 750 ℃; mixing aluminum nitride I, hydrogen-containing polysiloxane and an alkali catalyst according to a mass ratio of 20:5:1, and reacting at 140 ℃ for 5 hours to obtain aluminum nitride II; uniformly mixing aluminum nitride II, epoxy resin and platinum according to the mass ratio of 10:4:1, and reacting at 120 ℃ for 7 hours to obtain the catalyst. Wherein the base catalyst is sodium ethoxide.

Comparative example

Comparative example 1

The high performance fiber reinforced plastic material of this comparative example differs from example 1 in that: the heat conductive agent is replaced with an equivalent amount of auxiliary agent.

Comparative example 2

The high performance fiber reinforced plastic material of this comparative example differs from example 1 in that: the auxiliary agent is replaced by an equivalent amount of heat conducting agent.

Comparative example 3

The high performance fiber reinforced plastic material of this comparative example differs from example 1 in that: 70kg of polyvinyl chloride, 2kg of silicon carbide fiber, 2kg of aluminum nitride, 0.1kg of antioxidant, 0.2kg of plasticizer, 1kg of compatilizer, 3kg of heat conducting agent, 1kg of auxiliary agent, 2kg of boron nitride, 2kg of heat stabilizer, 5kg of polyurethane elastomer, 0.2kg of zinc stearate and 1kg of N-phenyl maleimide.

Comparative example 4

The high performance fiber reinforced plastic material of this comparative example differs from example 1 in that: 70kg of polyvinyl chloride, 12kg of silicon carbide fibers, 10kg of aluminum nitride, 0.1kg of antioxidants, 0.2kg of plasticizers, 1kg of compatilizers, 10kg of heat conducting agents, 6kg of auxiliary agents, 2kg of boron nitride, 2kg of heat stabilizers, 5kg of polyurethane elastomers, 0.2kg of zinc stearate and 1kg of N-phenyl maleimide.

Performance test

Thermal conductivity performance test: the high-performance fiber reinforced plastic materials prepared in examples 1 to 5 and comparative examples 1 to 4 were tested for thermal conductivity according to the test method in GB/T13475-1992 method for measuring and calibrating steady state Heat transfer Properties of building Components and method for protecting Hot Box, and the test results are shown in Table 1.

Heat resistance performance test: the high-performance fiber reinforced plastic materials prepared in examples 1 to 5 and comparative examples 1 to 4 were tested for Vicat softening point according to the test method in GB/T1633-2000 determination of Vicat Softening Temperature (VST) of thermoplastic, and the test results are shown in Table 1.

TABLE 1 results of Performance test of high Performance fiber reinforced plastics materials of examples 1-5 and comparative examples 1-4

As can be seen by combining the data in Table 1, the high performance fiber reinforced plastic materials prepared in examples 1-5 have good thermal conductivity and good heat resistance.

The present embodiment is merely illustrative of the present application and is not intended to be limiting, and modifications thereof without creative contribution may be made by those skilled in the art after reading the present specification.

Claims (10)

1. The high-performance fiber reinforced plastic material is characterized by being mainly prepared from the following raw materials in parts by weight: 70-80 parts of polyvinyl chloride, 5-10 parts of silicon carbide fibers, 5-8 parts of aluminum nitride, 0.1-0.5 part of antioxidants, 0.2-0.6 part of plasticizers, 1-2 parts of compatilizers, 5-8 parts of heat conducting agents, 2-4 parts of auxiliary agents, 2-4 parts of boron nitride, 2-3 parts of heat stabilizers, 5-10 parts of polyurethane elastomers, 0.2-0.5 part of zinc stearate and 1-2 parts of N-phenylmaleimide, wherein the aluminum nitride consists of aluminum nitride with the particle size of 20 mu m and aluminum nitride with the particle size of 2 mu m according to the mass ratio (5-6) of (1-2), the auxiliary agents comprise foam carbon, fibrous magnesium oxide and dysprosium oxide, and the heat conducting agents comprise expanded graphite, aluminum oxide and carbon fibers.

2. The high performance fiber reinforced plastic material of claim 1, wherein the expanded graphite is modified expanded graphite, and the method for preparing the modified expanded graphite comprises the steps of: s1, mixing lauric acid, capric acid and palmitic acid, and heating to obtain a mixture; s2, melting the mixture, then adding the expanded graphite, the graphene sheets and the polyvinylpyrrolidone, and drying to obtain expanded graphite I; s3, mixing the first expanded graphite with acrylic emulsion and alumina, then adding boron nitride nano-sheets, drying and grinding to obtain second expanded graphite; s4, stirring and mixing the expanded graphite II and tris buffer solution, then adding dopamine hydrochloride, carrying out water bath, standing and cooling, carrying out suction filtration and washing, and drying to obtain expanded graphite III; s5, mixing the expanded graphite III with water to obtain a dispersion liquid, immersing the polyurethane open-cell foam in the dispersion liquid, drying, hot-pressing, crushing and grinding to obtain the polyurethane open-cell foam.

3. The high performance fiber reinforced plastic material of claim 1, wherein the silicon carbide fiber is a modified silicon carbide fiber, and the method for preparing the modified silicon carbide fiber comprises the following steps: mixing hot melt adhesive, acrylic emulsion and tetrapod-like oxidized whiskers to obtain pretreated acrylic emulsion, mixing expanded graphite and pretreated acrylic emulsion to obtain pretreated expanded graphite, mixing pretreated expanded graphite and silicon carbide fibers, and drying to obtain pretreated silicon carbide fibers; mixing acrylamide, N' -methylene bisacrylamide, ethylene glycol and water, performing ultrasonic treatment to obtain a reaction solution, mixing the reaction solution and octyl phenol polyoxyethylene ether, adding molten heptadecanol, stirring, adding pretreated silicon carbide fibers, adding hydrogen peroxide and sodium sulfite, and drying to obtain the finished product.

4. The high performance fiber reinforced plastic material of claim 1, wherein the aluminum nitride is modified aluminum nitride, and the method for preparing the modified aluminum nitride comprises the following steps: hydroxylating aluminum nitride to obtain aluminum nitride I; mixing and reacting aluminum nitride I with hydrogen-containing polysiloxane and an alkali catalyst to obtain aluminum nitride II; uniformly mixing aluminum nitride II with epoxy resin, adding platinum, and mixing to obtain the final product.

5. The high-performance fiber reinforced plastic material according to claim 1, wherein the auxiliary agent consists of foamed carbon, fibrous magnesium oxide and dysprosium oxide in a mass ratio of (2-4): (3-5): (1-2).

6. The high-performance fiber reinforced plastic material according to claim 1, wherein the heat conducting agent consists of (1-2): (4-5): (1-2) of expanded graphite, aluminum oxide and carbon fiber in mass ratio.

7. A high performance fiber reinforced plastic material according to claim 6, wherein the alumina is composed of spherical alumina, fibrous alumina, and flaky alumina in a mass ratio of (5-6): (1-2): (3-4).

8. The high-performance fiber reinforced plastic material according to claim 1, wherein the antioxidant consists of antioxidant 1010 and antioxidant 168 in a mass ratio of (1-2) to (3-5).

9. The high-performance fiber reinforced plastic material according to claim 1, wherein the plasticizer is composed of dioctyl phthalate, nano calcium carbonate and N-methyl pyrrolidone according to the mass ratio of (3-4): (5-8): (1-2).

10. A method for preparing a high performance fiber reinforced plastic material as claimed in any one of claims 1 to 9, comprising the steps of:

(1) Weighing polyvinyl chloride, silicon carbide fiber, aluminum nitride, an antioxidant, a plasticizer, a compatilizer, a heat conducting agent, an auxiliary agent, boron nitride, a heat stabilizer, a polyurethane elastomer, zinc stearate and N-phenyl maleimide, and mixing to obtain a mixture;

(2) Extruding the mixture obtained in the step (1), and drying to obtain the final product.