High-heat-resistance and low-expansion-coefficient carbon fiber vinyl ester composite material and preparation method thereof

Abstract

The invention discloses a high-heat-resistance and low-expansion-coefficient carbon fiber vinyl ester composite material and a preparation method thereof. The composite material is prepared by carrying out a series of procedures, including stirring, spreading and molding on the following components in parts by weight: 40-50 parts of vinyl resin, 20-30 parts of glass fiber, 40-70 parts of carbon fiber powder, 70-90 parts of inorganic mineral filler, 2-5 parts of magnesium oxide, 2-6 parts of a mold release agent and 1-3 parts of a curing agent. The high-heat-resistance and low-expansion-coefficient carbon fiber vinyl ester composite material has the advantages of simple composition, convenience in preparation, properties of a metal substrate and a nonmetallic substrate, wider application range, simple and convenient steps, simple equipment, convenience in implementation and popularization, low production cost and very high economic benefit. The properties of high temperature resistance, noninflammability, corrosion resistance, heat resistance, high sound insulating property, high tensile strength and high electrical insulating property of glass fiber are fully used and the properties of low dead weight and high strength of carbon fiber are fully utilized, and high heat resistance, small expansion coefficient and low contraction rate are realized on the premise of ensuring low specific weight.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and particularly relates to a carbon fiber vinyl ester composite material with high heat resistance and low expansion coefficient and a preparation method. Background technique [0002] Composite materials are composed of two or more materials with different properties, through physical or chemical methods, macroscopically composed of materials with new properties. It makes full use of the advantages of various materials to complement each other in performance and produce a synergistic effect, so that the comprehensive performance of the composite material is better than the original constituent materials to meet various requirements. Composite materials are divided into two categories: metal and non-metal based on the matrix material. Among them, the non-metal matrix mainly includes synthetic resin, rubber, ceramic, graphite, carbon and so on. Commonly used metal substrates are aluminum, ...

AI Technical Summary

Problems solved by technology

Restricted by the material of the matrix itself, the composite material of the non-metallic matrix has the characteristics of low specific gravity, heat resistance, and large expansion coefficient, while the composite material of the metal matrix has the characteristics of large specific gravity, high heat resistance, small expansion coefficient, and zero shrinkage. In real life, precision components in high-heat working environments, such as IT equipment, experimental instruments, audio and video components, etc., require materials to have high heat resistance, small expansion coefficient, zero shrinkage, and low specific gravity. The composite materials of metal matrix and non-metal matrix cannot meet the demand at the same time, which often leads to problems such as poor stability and low accuracy of the equipment, which seriously affects normal production and life.