Composite rubber for automotive seals with wear resistance

Abstract

The invention relates to a composite rubber for automobile seals with wear resistance. On the one hand, polyvinylpyrrolidone can prevent graphite powder, diatomaceous earth, barite powder, and zinc oxide powder from aggregating during liquid phase ablation when carrying out laser liquid phase ablation; On the one hand, when preparing rubber, polyvinylpyrrolidone has both hydrophilic groups and lipophilic groups, which can improve the connection between graphite, diatomaceous earth, barite powder, zinc oxide and rubber, so that the prepared rubber has a The connection force is stronger and the wear resistance is better; the particle size of various solid powders used in actual use is less than 20 nanometers, which greatly reduces pulverization. On the one hand, the surface roughness of the prepared rubber is extremely low, on the other hand On the one hand, its pulverization degree is extremely low, and the smooth surface improves its wear resistance; after forming, infrared radiation is used to increase the hardness of the rubber surface, reduce the surface moisture content, and further improve the surface wear resistance of the rubber.

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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