A preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite material

A phenolic resin, fiber reinforced technology is applied in the field of preparation of sintered carbon oxide fiber reinforced phenolic resin friction composite materials, which can solve the problems of human health hazards, cumbersome steps, limitations, etc. The effect of improving tribological properties
CN109354822BActive Publication Date: 2021-02-12CHANGCHUN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN UNIV OF TECH
Publication Date
2021-02-12

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Abstract

The invention discloses a method for preparing an oxidized carbon fiber-reinforced phenolic resin friction composite material by a burning method. First, the carbon fibers are burned with butane gas for 5-60 minutes to obtain carbon fibers with a large number of oxygen-containing functional groups such as -COOH and -OH on the surface. . The calcined carbon fibers were then combined with APTES-modified β-Si 3 N 4 , phenolic resin and curing agent (H256) are mixed with pre-dipping liquid in a mass ratio of 30-40:60-70. After removing the solvent from the prepreg, hot-press curing at a temperature of 130-150° C., a hot-pressing time of 20 minutes, and a pressure of 5 MPa to obtain a fired carbon oxide fiber / phenolic resin friction composite material. The sample was subjected to friction and wear test, and its thermal conductivity was 3.06W m ‑1 k ‑1 , the coefficient of kinetic friction reaches 0.13, and the wear rate is as low as 1.14×10 ‑8 mm 3 / Nm. The friction composite material exhibits excellent tribological properties, and has a simple preparation process, low cost and no pollution.
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Description

technical field

[0001] The invention relates to the technical field of friction composite materials, in particular to a preparation method of burning oxidized carbon fiber reinforced phenolic resin friction composite materials. Background technique

[0002] Carbon fiber friction composite materials are widely used in transportation tools such as automobiles, ships, and airplanes because of their advantages such as light weight, low noise, and stable friction coefficient. However, due to the smooth surface and high graphitization of carbon fiber, the surface is inert, resulting in poor wettability between carbon fiber and phenolic resin, which greatly limits the application of carbon fiber in friction composite materials. Therefore, it is an inevitable trend to modify the surface of carbon fiber. In the present invention, the butane flame is used to burn the carbon fiber under the conditions of a certain time and distance, so that the surface of the carbon fiber reacts in th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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