High-strength carbon fiber reinforced polyether-ether-ketone composite material and preparation method thereof

Abstract

The invention belongs to the field of special engineering plastic, and in particular relates to a high-strength carbon fiber reinforced polyether-ether-ketone composite material and a preparation method thereof. The composite material contains 65-90wt% of polyether-ether-ketone resin, 0-5wt% of high temperature resistant lubricant and 10-30wt% of high-strength carbon fiber. The melt index of the polyether-ether-ketone resin is 12-80g/10min, and the high temperature resistant lubricant is composed of high-molecular-weight polysiloxane and montan wax in the Clariant Corporation. The carbon fiber used is high-strength chopped carbon fiber of the SGL Carbon, and the surface of the fiber is subjected to coating modification. The prepared polyether-ether-ketone composite material has the characteristics of high strength, high modulus and high heat resistance, and can be widely used for aerospace, weaponry and high-end civil use field, such as a high temperature resistant connector.

Description

technical field [0001] The invention belongs to the field of high-performance polymers, and in particular relates to a high-strength carbon fiber reinforced polyetheretherketone composite material and a preparation method thereof. Background technique [0002] PEEK is a typical thermoplastic high-performance polymer, which has high temperature resistance, solvent resistance, aging resistance, hydrolysis resistance, high specific strength, specific modulus and other properties, especially in the harsh environment of high temperature and high humidity. Good comprehensive performance, therefore, in today's increasingly demanding material properties, the importance of PEEK and its composite materials has become increasingly prominent. However, with the rapid development of science and technology, the performance requirements of materials are also constantly improving, especially in the aerospace field, which requires light weight and extremely high strength and modulus. Many fie...

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Problems solved by technology

[0003] Carbon fiber is a traditional reinforcing filler, which has a significant effect on improving strength and heat resistance, but ordinary carbon fiber cannot meet the material requirements of the high-end market. Therefore, this invention uses high-strength carbon fiber from SGL, Germany

The surface of carbon fiber is hydrophilic and has poor compatibility with resin base. Although traditional silane coupling agents can obviously modify the compatibility between carbon fiber and resin, its heat resistance level is low, and its structure is different from that of PEEK. Larger, unable to play a role in compatibilization, so we choose PES, PEI and other resin solutions that are very compatible with PEEK to coat carbon fibers, which can play a significant role in interfacial enhancement

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