A kind of additive used in the raw material mixing process of ceramic friction material and its preparation method

Abstract

The present invention relates to the technical field of ceramic friction material additives, especially to an additive for the raw material mixing process of a ceramic friction material, and a preparation method thereof. According to the present invention, ceramic loose cotton, carbon fibers, potassium titanate fibers, hogwash oil, diesel oil, paint and coal powder are subjected to reasonable ratio design so as to make the ceramic loose cotton, the carbon fibers and the potassium titanate fibers in the prepared additive be subjected to the microscopic chemical reaction, enhance the toughness of the carbon fibers, the potassium titanate fibers and the ceramic loose cotton, and improve the surface activity, and the subsequent preparation process is combined so as to make the materials in the additive be uniformly dispersed, make the treatment degree deep, and make the surface activity of the ceramic loose cotton, the carbon fibers and the potassium titanate fibers and the internal structure toughness be improved, such that the friction coefficient and the wear rate of the ceramic friction material are improved, the defect of easy slipping of the ceramic friction material is prevented, and the safety is improved.

Description

Technical field [0001] The invention relates to the technical field of additives for ceramic friction materials, in particular to an additive used in the mixing process of ceramic friction materials and a preparation method thereof. Background technique [0002] Ceramic friction materials have been widely used in the braking field due to their excellent characteristics, which in turn makes the traditional pure metal braking devices easy to corrode, slip and have poor friction properties in the braking field. The defects have been solved and the service life of friction materials has been prolonged; however, with the continuous development of ceramic friction materials, the ratio and formula of ceramic friction materials are used for the friction performance of ceramic friction materials, such as dynamic and static friction coefficient ratio, wear rate The improvement of, thermal stability, etc. has become a more difficult problem, which has made the dynamic and static friction co...

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Problems solved by technology

[0002] Due to its excellent characteristics, ceramic friction materials have been widely used in the field of braking, which makes the traditional pure metal braking devices easy to corrode, slip and have poor friction performance. The defects are solved, and the service life of the friction material is extended; however, with the continuous development of the ceramic friction material, the ratio and formula of the ceramic friction material are carried out on the friction performance of the ceramic friction material, such as the dynamic and static friction coefficient ratio, wear rate The improvement of thermal stability and so on has become a more difficult problem, which makes the dynamic and static friction coefficient of most ceramic friction materials maintain between 85-91%, and the wear rate increases continuously with the increase of temperature. trend, and the increase is relatively large, that is, the thermal stability of the ceramic friction material is poor, thereby shortening the service life of the ceramic friction material, and because the thermal stability of the existing ceramic friction material is poor, and thus in In low temperature environment, the toughness is poor, the hardness is high, and the wear resistance rate is strong, which makes the ceramic friction material easy to slip during braking, causing safety hazards

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