Composite rubber with wear resistance for automobile sealing element

Abstract

The invention relates to composite rubber with wear resistance for an automobile sealing element. By using polyvinylpyrrolidone, on one hand, when laser liquid-phase ablation is carried out, the polyvinylpyrrolidone can play a role in preventing aggregation of graphite powder, diatomite, barite powder and zinc oxide powder during liquid-phase ablation; and on the other hand, when the rubber is prepared, the polyvinylpyrrolidone has a hydrophilic group and an oleophylic group at the same time, and can improve connection of graphite, diatomite, barite powder, zinc oxide and the rubber, and therefore the prepared rubber is higher in internal connection force and better in wear resistance. The particle size of various used solid powder is smaller than 20 nanometers in actual use, and the pulverization is greatly reduced. On one hand the surface roughness of the prepared rubber is extremely low; and on the other hand, the pulverization degree is extremely low, and the wear resistance of therubber is improved due to the smooth surface. Infrared irradiation is carried out after molding, so that the surface hardness of the rubber is improved, the surface moisture content is reduced, and the surface wear resistance of the rubber is further improved.

Description

technical field [0001] The invention relates to the field of rubber preparation for automobiles, in particular to a composite rubber for automobile seals with wear resistance. Background technique [0002] In the automobile industry, the use of rubber accounts for more than 20% of automobile raw materials. The aging of rubber easily leads to a decrease in wear resistance, which greatly increases the probability of abnormal noise in the car after a long period of use; at the same time, due to the rubber used in most seals, if the wear resistance of the rubber is insufficient, it will cause various The leakage of liquid will cause unpredictable consequences. How to further improve the wear resistance of rubber is a difficult problem that needs to be solved in automotive seals. [0003] In the prior art, the particle size of most of the ingredients added to the rubber is generally in the micron scale, and a few are in the submicron scale; this leads to a high degree of pulver...

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Problems solved by technology

[0003] In the prior art, the particle size of most of the ingredients added to the rubber is generally in the micron scale, and a few are in the submicron scale; this leads to a high degree of pulverization of the rubber during the preparation process. The strength of the rubber is greatly reduced, which affects the use;

[0004] In the very few methods of adding nanoscale components, the general nanomaterials are prepared by ball mill or sander. During the preparation process, a large amount of abrasive must be added, and the grinding ball needs to be adjusted at the same time. The efficiency and cost of grinding are very high.

If you buy commercial nano-scale raw materials, on the one hand, it is difficult to unify the scale of different raw materials; on the other hand, most of the production of nano-scale raw materials is controlled by foreign enterprises, and the purchase cost will also be greatly increased.

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