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Polyimide base high temp.-resistant and radiation-resistant lubricating paint

A technology of polyimide base and polyimide resin, which is applied in the direction of coating, etc., can solve the problems of high temperature resistance and insufficient radiation resistance, and achieve excellent high temperature resistance, radiation protection and good wear resistance.

Inactive Publication Date: 2002-12-18
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it has deficiencies in high temperature resistance and radiation resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 4.0 grams of polyimide resin and stir it in 3.0 grams of mixed solvent to dissolve it; weigh 1.7 grams of molybdenum disulfide, 0.2 grams of antimony trioxide, and 0.2 grams of basic lead phosphite into a ball mill tank , add 3.0 grams of mixed solvent and ball mill for 5 hours, disperse to the required particle size, add polyimide resin and grind for half an hour; add 8.0 grams of mixed solvent after discharging, and disperse evenly to obtain polyimide-based lubricating protective coating [ Mixed solvent (volume percentage): N,N dimethylcaproamide: 66%, toluene: 34%].

Embodiment 2

[0021] Embodiment 2: (unit: gram)

[0022] Polyimide resin 4.0 Molybdenum disulfide 1.67

[0023] Antimony trioxide 0.4 Basic lead phosphite 0.32

[0024] Mixed solvent 11 [of which: N, N dimethyl caproamide: 60%, toluene: 40%

[0025] (volume percentage)].

Embodiment 3

[0026] Embodiment 3: (unit: gram)

[0027] Polyimide resin 4.0 Molybdenum disulfide 1.78

[0028] Antimony trioxide 0.38 Basic lead phosphite 0.42

[0029] Mixed solvent 11 [of which: N, N dimethyl caproamide: 55%, toluene: 45%

[0030] (volume percentage)].

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Abstract

The present invention relates toa polyimide based high temp. resistant and radiation resistant lubricating coating. It is characterized by that it uses the irradiation-proof thermosetting polyimide resin as adhesive, uses molybdenum disulfide as lubricant, uses antimony trioxide and basic lead phosphite as modifying agent, and adds the mixed solvent to form the invented lubricating coating. Said coating not only possesses good wear-resistant, loading and lubricating properties, but also has the functions of resisting high temp. and resisting radiation. The sliding component coated with said coating material can be used for a long period in the high-temp. (300-370 deg.C) and strong radiatino environment.

Description

technical field [0001] The invention relates to a polyimide-based high-temperature-resistant and radiation-resistant lubricating coating and a preparation method thereof. Background technique [0002] Dry film lubrication technology is a new type of lubrication technology developed with the development of high-tech industries such as aviation, aerospace, and nuclear technology. It is an effective means to solve mechanical lubrication problems under special working conditions, but one of its shortcomings is In some special environments (high temperature, radiation, humidity, corrosive gas), there is no or no protection ability. Because the binder as the main component is prone to degradation and failure in high temperature or humid atmosphere, the general organic bonded coatings will degrade the binder due to radiation, and the cross-network structure will be broken, so that the performance of the coating will be greatly reduced, even Losing the ability to lubricate and prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/00C09D179/08
Inventor 贾均红周惠娣陈建敏陈海燕
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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