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Method for coating graphite on surface of rubber product by using friction method

A rubber product and surface friction technology, which is applied to the device for coating liquid on the surface, special surface, coating, etc., can solve the problems of complicated coating process and easy peeling off of tetrafluoroethylene coating, and achieve safe operation and low cost. Low, uniform coating effect

Active Publication Date: 2013-07-03
南京金三力高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to overcome the complex surface coating process of rubber products in the prior art, and when the seal is stretched or compressed, the tetrafluoroethylene coating is easy to fall off, and provides a rubber product surface friction coating method. Graphite method, choose low-cost and easy-to-obtain coating material, and use simple coating process to meet the requirements of reducing the friction coefficient of the surface of the rubber part, improving the wear resistance and anti-blocking performance of the rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of rubber product surface friction method coating graphite method of the present embodiment, its steps are:

[0033] (1) Feeding: Add 1.0 ml of MD-2 forged graphite milk, 1 liter of plastic particles, and 1,000 ml of rubber O-rings into the drum of a 5-liter drum mixer, about 1,300 pieces, of which MD-2 forged graphite milk Produced by Laizhou Jindi Synthetic Materials Co., Ltd., the particle diameter of the plastic particles is 0.3~3mm. In this embodiment, the diameter of the preferred plastic particles is 1.6mm, the inner diameter of the rubber O-ring is 19.6mm, and the wire diameter is 3.65mm. The volume of plastic particles is not smaller than the volume of rubber O-ring, and the total volume of plastic particles and rubber O-ring is not more than 1 / 2 of the volume of the drum;

[0034] (2) Coating: Rotate the drum at a speed of 60 rpm for 8 minutes, so that the plastic particles and the surface of the rubber O-ring adhere to the MD-2 forged graphite emulsion...

Embodiment 2

[0043] A kind of rubber product surface friction method coating graphite method of the present embodiment, its steps are:

[0044] (1) Feeding: Add 0.25 ml of MD-6 forged graphite milk, 1 liter of sand grains, and 990 ml of rubber rectangular gasket into the drum of a 5-liter drum mixer, about 900 pieces, of which MD-6 forged graphite milk is Produced by Qingdao Lihaofeng Graphite Co., Ltd., the particle diameter of the sand grains is 0.3~3mm. In this embodiment, the diameter of the sand grains is preferably 3mm. The inner diameter of the rubber rectangular gasket is 21mm, the outer diameter is 28mm, and the height is 4.2mm. Not less than the volume of the rubber rectangular gasket, the total volume of the sand grains and the rubber rectangular gasket shall not exceed 1 / 2 of the volume of the drum;

[0045](2) Coating: Rotate the drum at a speed of 80 rpm for 5 minutes, so that the sand particles and the surface of the rubber rectangular gasket adhere to MD-6 forged graphite m...

Embodiment 3

[0054] A kind of rubber product surface friction method coating graphite method of the present embodiment, its steps are:

[0055] (1) Feeding: Add 0.65 ml of MD-6 forged graphite milk, 1 liter of sand grains, and 600 ml of rubber V-shaped oil seal into the drum of a 5-liter drum mixer, about 1,000 pieces, of which MD-6 forged graphite milk is Produced by Qingdao Lihaofeng Graphite Co., Ltd., the particle diameter of the sand is 0.3~3mm. In this embodiment, the diameter of the sand is preferably 0.3mm. The inner diameter of the rubber V-shaped oil seal is 21mm, the outer diameter is 28mm, and the height is 4.2mm. The volume is not less than the volume of the rubber V-shaped oil seal, and the total volume of the sand grains and the rubber V-shaped oil seal does not exceed 1 / 2 of the volume of the drum;

[0056] (2) Coating: Rotate the drum at a speed of 40 rpm for 20 minutes, so that the sand particles and the surface of the rubber V-shaped oil seal adhere to the MD-6 forged gr...

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Abstract

The invention discloses a method for coating graphite on the surface of a rubber product by using a friction method, belonging to the field of surface treatment of the rubber product. The method for coating the graphite comprises the following steps of: (1) feeding: adding colloidal graphite for forging, pill particles and the rubber product into a drum-type mixer, wherein a ratio of the colloidal graphite for forging to the pill particles to the rubber product in volume is (0.5-2) to 2,000 to (1,000-2,000); (2) coating: rotating a rotary drum so that the colloidal graphite for forging is uniformly adhered to the surface of the rubber product; (3) drying: drying the rubber product coated with the colloidal graphite for forging at a room temperature or under a state of heating to a temperature which is equal to or less than 80 DEG C; and (4) polishing by friction: putting the dried rubber product and the dried pill particles into the dried rotary drum so as to brightly, uniformly and firmly adhere a graphite coating to the surface of the rubber product. According to the method disclosed by the invention, the rubber product has no need of being cleaned, the coating has no need of being cured, the adhering capability of the coating is strong, the graphite coating layer cannot release when the stretching formation of the rubber product reaches to 500%, and the material cost of a coating agent is low.

Description

technical field [0001] The invention relates to the field of surface treatment of rubber products, in particular to a friction coating method for coating graphite on the surface of rubber products. Background technique [0002] At present, in order to reduce the friction coefficient of the rubber surface and improve the wear resistance and anti-adhesion performance of the rubber, the rubber surface will be coated with tetrafluoroethylene coating, which can reduce the static and dynamic friction coefficients of the rubber from 0.4 and 0.5 to 0.7 respectively. 0.1 and 0.16~0.18. This has important practical significance for rubber parts that remain static for a long time and start intermittently. However, the coating process of tetrafluoroethylene coating is complicated and the production cost is high. Moreover, when the seal is stretched or compressed, tetrafluoroethylene The coating comes off easily. [0003] In the prior art, the coating method of most tetrafluoroethylene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/08B05D7/02
Inventor 徐海潮芮巧红程万福
Owner 南京金三力高分子科技有限公司
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