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

A friction material and mixing process technology, which is applied in the additive and preparation field of ceramic friction material raw material mixing process, can solve the problems of poor slipping and friction performance, poor thermal stability, potential safety hazards, etc., and achieve improved surface activity and improved friction coefficient , prevent slippery effect

Active Publication Date: 2018-04-06
中山市翔宇汽车零件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment 1

[0025] An additive used in the mixing process of ceramic friction materials. The raw materials are 3kg ceramic loose cotton, 0.3kg carbon fiber, 0.1kg potassium titanate fiber, 1kg waste oil, 3kg diesel, 1kg paint, and 1kg coal powder. Among them, ceramic loose cotton is made by treating 10 parts by mass of clay clinker, 9 parts by mass of alumina powder, 5 parts by mass of silica powder, and 1 part by mass of chromite sand at a temperature of 300°C for 20 minutes, and then melting it in an electric furnace. , It is obtained by spinning it into fibrous silk with a spinning machine, and then collecting cotton with a cotton collector.

[0026] The method for preparing additives used in the mixing process of ceramic friction materials includes the following steps:

[0027] (1) The ceramic loose cotton is soaked in trench oil, and during the soaking process, one-third of coal powder is added to it, and the temperature is adjusted to 300℃, the vacuum degree is 0.02MPa, and the ultrasoni...

Embodiment 2

[0032] An additive used in the mixing process of ceramic friction materials. The raw material components are 7kg ceramic loose cotton, 0.9kg carbon fiber, 0.7kg potassium titanate fiber, 3kg waste oil, 7kg diesel, 3kg paint, and 7kg coal powder. Among them, ceramic loose cotton is made by treating 20 parts by mass of clay clinker, 11 parts by mass of alumina powder, 9 parts by mass of silica powder, and 3 parts by mass of chromite sand at a temperature of 500°C for 30 minutes, and then melting it in an electric furnace. , It is obtained by spinning it into fibrous silk with a spinning machine, and then collecting cotton with a cotton collector.

[0033] The specific preparation method of the ceramic loose cotton is to mix clay clinker, alumina powder, silica powder, and chromite sand, and then treat it at 500°C for 30 minutes, then ultrasonic treatment for 10 seconds, and then add it to it The clarified lime water, which accounts for 1% of the mixed material, is then sent to the ...

Embodiment 3

[0041] An additive used in the mixing process of ceramic friction materials. The raw material components are 5kg of ceramic loose cotton, 0.6kg of carbon fiber, 0.4kg of potassium titanate fiber, 2kg of waste oil, 5kg of diesel, 2kg of paint, and 3kg of coal powder. Among them, ceramic loose cotton is made by treating 15 parts by mass of clay clinker, 10 parts by mass of alumina powder, 7 parts by mass of silica powder, and 2 parts by mass of chromite sand at a temperature of 400°C for 25 minutes, and then melting it in an electric furnace. , It is obtained by spinning it into fibrous silk with a spinning machine, and then collecting cotton with a cotton collector.

[0042] The specific preparation method of the ceramic loose cotton is to mix clay clinker, alumina powder, silica powder, and chromite sand, and then treat it at 400°C for 25 minutes, and then ultrasonic treatment for 20 seconds, and then add it to it The clarified lime water, which accounts for 3% of the mixed mater...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/632
Inventor 陈辉张亮
Owner 中山市翔宇汽车零件制造有限公司
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