Ultrahigh-temperature-resistant carbon fiber composite material and preparation method thereof

Abstract

The invention discloses an ultrahigh-temperature-resistant carbon fiber composite material and a preparation method thereof. The invention belongs to the technical field of composite materials, and particularly relates to an ultrahigh-temperature-resistant carbon fiber composite material and a preparation process thereof. The invention aims to meet high requirements on material performance in an extreme high-temperature environment, and is widely applied to the fields of aerospace, nuclear energy, automobiles, industrial furnaces and the like. The preparation method is characterized by comprising the following steps: selecting materials: selecting high-performance carbon fibers and a high-temperature-resistant matrix coating; and material treatment: pretreating the carbon fibers, and uniformly mixing the matrix coating. And molding treatment: controlling the temperature, the pressure and the time. The ultrahigh-temperature-resistant carbon fiber composite material is applicable to the following fields: thermal protection systems, high-temperature structural components and the like in the aerospace field. Reactor components, thermal insulation materials and the like in the nuclear energy field. And high-performance engine components, exhaust systems and the like in the automobile industry. The invention relates to a heat-resistant member, a furnace lining and the like in an industrial furnace.

Description

Technical Field

[0001] The present invention belongs to the technical field of composite materials, and in particular to an ultra-high temperature resistant carbon fiber composite material and a preparation process thereof. Background Art

[0002] In real production and life, people often deal with high temperatures, and many heat-resistant materials have appeared on the market, but most of them are temperature-resistant below 1000°C, which is difficult to break through. Carbon fiber composite materials have been widely used in aerospace, automobile, energy and other fields due to their advantages of high strength, high modulus, light weight and high temperature resistance. In theory, carbon fiber can withstand temperatures above 2000°C. However, carbon fiber is easily oxidized in daily aerobic high-temperature environments and has poor stability, making it difficult to meet the needs of use under ultra-high temperature conditions. Therefore, the current carbon fiber composite materials are far from bringing their high temperature resistance into play. Therefore, the development of a carbon fiber composite material resistant to ultra-high temperatures and its preparation process has important scientific significance and practical application value. The present invention solves the problem of carbon fiber being oxidized at high temperatures and the problem of ultra-high temperature resistant matrix coatings, so as to achieve the effect of ultra-high temperature resistance. Summary of the Invention

[0003] The purpose of the present invention is to provide an ultra-high temperature resistant carbon fiber composite material and a preparation process thereof, which, through special material composition and preparation process, enables the composite material to have excellent high temperature resistance.

[0004] Material composition The ultrahigh temperature resistant carbon fiber composite material of the present invention is mainly composed of the following components: (1) Carbon fiber: provides high strength and high modulus, and is the main component of composite materials; (2) High-temperature resistant matrix nanocoating: Select a coating with excellent high-temperature resistant performance as the matrix to ensure the structural stability of the composite material at high temperatures; (3) Heat-resistant filler: Add a certain proportion of heat-resistant filler to further improve the high temperature resistance of the composite material; (4) Coupling agent: enhances the interfacial bonding between carbon fiber and matrix resin, and improves the overall performance of the composite material.

[0005] Preparation process The preparation process of the ultrahigh temperature resistant carbon fiber composite material of the present invention comprises the following steps: (1) Carbon fiber pretreatment: Surface treatment of carbon fiber to improve its compatibility with the matrix coating; (2) Preparation of high-temperature resistant matrix coating: melting or dissolving the selected high-temperature resistant nanomaterials and ceramic materials to obtain a uniform high-temperature resistant solution; (3) Preparation of composite materials: The pretreated carbon fiber is evenly mixed with the high-temperature resistant matrix coating, heat-resistant filler and coupling agent, and then molded and cured at a certain temperature to obtain an ultra-high-temperature resistant carbon fiber composite material.

[0006] Performance characteristics The ultrahigh temperature resistant carbon fiber composite material of the present invention has the following performance characteristics: (1) Excellent high temperature resistance: It can maintain structural stability in ultra-high temperature (2000℃) environment and has good thermal stability and thermal oxidation resistance; (2) Lightweight: Carbon fiber composite materials have a lower density, which can reduce the weight of the composite materials, and have an ultra-thin thickness to reduce energy consumption; (3) Good processing performance: It can be prepared into components of various shapes and sizes through conventional molding processing methods, which is convenient for practical application.

[0007] (4) Good friction resistance and corrosion resistance: can be used in some poor operating environments.

[0008] Effects of the Invention The ultrahigh-temperature-resistant carbon fiber composite material and its preparation process of the present invention solve the problem of poor performance stability of traditional carbon fiber composite materials in high-temperature environments and improve the application performance of carbon fiber composite materials under ultrahigh-temperature conditions. The composite material has excellent high-temperature resistance, light weight and good processing performance, and can be widely used in aerospace, automobiles, ships, energy and other fields to meet the use requirements in complex environments. The ultrahigh-temperature-resistant carbon fiber composite material and its preparation process of the present invention can prepare a composite material with excellent high-temperature resistance, promoting the application and development of carbon fiber composite materials in high-temperature fields.

Claims

1. Composite materials all have nano coatings.

2. Composite materials all have ceramic coatings.

3. Composite materials all have nano ceramic coatings.

4. Carbon fiber composite materials are generally made of nano-ceramic materials and carbon fiber composites for temperature resistance.