Composite rubber for automotive seals with wear resistance

A technology of composite rubber and wear resistance, which is applied in the direction of manufacturing tools, laser welding equipment, welding equipment, etc., can solve the problems of high grinding efficiency and cost, increased purchase cost, and reduced rubber strength, so as to achieve fast heat transfer and improved The effect of improving wear resistance and thermal conductivity

Active Publication Date: 2022-04-08
WUHU FROAD AUTOMOTIVE PARTS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • Composite rubber for automotive seals with wear resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] to combine figure 1 , a preparation method of composite rubber for automotive seals with wear resistance, the raw materials include: 100 parts of raw nitrile rubber, 10 parts of polyvinylpyrrolidone, 10 parts of graphite powder, 1 part of polytetrafluoroethylene, vulcanized 1 part of anti-aging agent, 3 parts of diatomite, 3 parts of barite powder, 1 part of anti-aging agent, 1 part of zinc oxide powder, 1 part of stearic acid;

[0027] The preparation method comprises the following steps:

[0028] Step 1. Fully mix graphite powder, diatomaceous earth, barite powder, and zinc oxide powder, add them into a ball mill for ball milling, and ball mill until the particle size is less than 500nm to obtain the first mixture;

[0029] Step 2. Add polyvinylpyrrolidone to the first mixture obtained in step 1, add the same volume of water, mix and stir to obtain the second mixture, and spread it to a thickness of 1-2mm; place it in an adjustable wavelength Laser ablation processi...

Embodiment 2

[0039] A method for preparing composite rubber for automobile seals with wear resistance. The raw materials include: 100 parts of raw nitrile rubber, 15 parts of polyvinylpyrrolidone, 15 parts of graphite powder, 2 parts of polytetrafluoroethylene, and a vulcanizing agent 2 parts, 5 parts of diatomite, 5 parts of barite powder, 1 part of anti-aging agent, 1 part of zinc oxide powder, 1 part of stearic acid;

[0040] The preparation method comprises the following steps:

[0041] Step 1. Fully mix graphite powder, diatomaceous earth, barite powder, and zinc oxide powder, add them into a ball mill for ball milling, and ball mill until the particle size is less than 500nm to obtain the first mixture;

[0042]Step 2. Add polyvinylpyrrolidone to the first mixture obtained in step 1, add the same volume of water, mix and stir to obtain the second mixture, and spread it to a thickness of 1-2mm; place it in an adjustable wavelength Laser ablation processing under the picosecond or fem...

Embodiment 3

[0052] A method for preparing composite rubber for automotive seals with wear resistance, the raw materials include: 100 parts of nitrile silicone rubber raw rubber, 10-15 parts of polyvinylpyrrolidone, 10-15 parts of graphite powder, and 1 part of polytetrafluoroethylene -2 parts, 1-2 parts of vulcanizing agent, 3-5 parts of diatomaceous earth, 3-5 parts of barite powder, 1 part of anti-aging agent, 1 part of zinc oxide powder, 1 part of stearic acid and 5-10 parts of charcoal black;

[0053] The preparation method comprises the following steps:

[0054] Step 1. Fully mix graphite powder, carbon black, diatomaceous earth, barite powder, and zinc oxide powder, add them into a ball mill for ball milling, and ball mill until the particle size is less than 500nm to obtain the first mixture;

[0055] Step 2. Add polyvinylpyrrolidone to the first mixture obtained in step 1, add the same volume of water, mix and stir to obtain the second mixture, and spread it to a thickness of 1-2...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08L39/06C08L27/18C08K13/06C08K9/00C08K3/04C08K7/26C08K3/30C08K3/22C08K5/09B29C71/04B23K26/362B23K26/402
CPCC08L83/08B29C71/04B23K26/362B23K26/402C08K2003/3045C08K2003/2296C08K2201/011C08L2205/03C08L39/06C08L27/18C08K13/06C08K9/00C08K3/04C08K7/26C08K3/30C08K3/22C08K5/09
Inventor 罗永伟吴菁朱天伟
Owner WUHU FROAD AUTOMOTIVE PARTS LTD
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