Organic-inorganic composite lubricating protective coating material with excellent space-environment resistance

A space environment, inorganic composite technology, applied in the direction of coating, etc., can solve the gaps in adhesion, impact resistance and lubrication performance, restrict the life and reliability of space equipment, and cannot meet the actual use needs, etc., to achieve good adhesion , low friction coefficient and long wear life

Active Publication Date: 2019-07-19
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For a long time, the lubrication failure of space equipment components has been the bottleneck restricting the life and reliability of space equipment
Since polymer-based self-lubricating materials (organic coatings) are used in a space environment for a long time, it is difficult for them to resist the harsh environmental effects of AO, UV, high-energy particle radiation and high-low temperature cycles, which will lead to a rapid decline in material performance. Can not meet the actual use needs
Compared with inorganic lubricating protective coating materials, they have more prominent space environment applicability, but there is still a big gap between existing materials in adhesion, impact resistance and lubrication performance.
Therefore, in the face of the use requirements of modern high-tech equipment, it is urgent to realize the preparation of high-performance inorganic-organic composite lubricating protective coatings by improving the defects of poor adhesion and easy wear of inorganic coatings, and provide high-quality coatings for modern high-tech space equipment. Performance Lubricant Protective Coating Provides Technical Solution

Method used

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  • Organic-inorganic composite lubricating protective coating material with excellent space-environment resistance
  • Organic-inorganic composite lubricating protective coating material with excellent space-environment resistance
  • Organic-inorganic composite lubricating protective coating material with excellent space-environment resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of organic-inorganic composite resin: Weigh H 3 PO 4 35 g, CrO 3 7g, Al(OH) 3 14g, water 20g, put into a container and raise the temperature to 90~100°C and stir for 1~2 hours to form a homogeneous phase; when the temperature is lowered to below 40°C, add 24 g of PTFE emulsion and continue to stir for 4 hours, cool to room temperature and discharge;

[0024] Preparation of lubricating coating: Weigh 13 g of organic-inorganic composite resin, 18 g of tungsten disulfide, 10 g of antimony trioxide, 3.5 g of cerium trifluoride, and 55.5 g of water; mix the raw materials and disperse them evenly by ball milling to obtain a lubricating coating ;

[0025] Performance of lubricating coating: Spray the dispersed lubricating coating on the surface of the part under compressed air (no oil) or compressed nitrogen (the surface of the part needs to be pre-degreased, derusted, sand blasted, ultrasonic and other surface treatment). The sprayed parts should be placed ...

Embodiment 2

[0027] Preparation of organic-inorganic composite resin: Weigh H 3 PO 4 35 g, CrO 3 7g, Al(OH) 3 14g, water 20g, put into a container and raise the temperature to 90~100°C and stir for 1~2 hours to form a homogeneous phase; when the temperature is lowered to below 40°C, add 24 g of PTFE emulsion and continue to stir for 4 hours, cool to room temperature and discharge;

[0028] Preparation of lubricating coating: Weigh 18 g of organic-inorganic composite resin, 12 g of molybdenum disulfide, 15 g of antimony trioxide, 4.5 g of cerium trifluoride, and 50.5 g of water. After mixing the raw materials used, they are evenly dispersed by ball milling to obtain a lubricating coating

[0029] Performance test of lubricating coating: Spray the dispersed lubricating coating on the surface of the part under compressed air (no oil) or compressed nitrogen (the surface of the part needs to be degreased, derusted, sand blasted, ultrasonic and other surface treatment in advance). The spr...

Embodiment 3

[0031] Preparation of organic-inorganic composite resin: Weigh H 3 PO 4 35 g, CrO 3 7g, Al(OH) 3 14g, water 24g, put into a container and raise the temperature to 90~100°C and stir for 1~2 hours to form a homogeneous phase; when the temperature drops below 40°C, add 20 g of FEP emulsion and continue stirring for 4 hours, then cool to room temperature and discharge;

[0032]Preparation of lubricating coating: Weigh 20 g of organic-inorganic composite resin, 14 g of molybdenum disulfide, 15 g of antimony trioxide, 3.5 g of cerium trifluoride, and 47.5 g of water. The raw materials used are mixed and dispersed uniformly by ball milling to obtain a lubricating coating;

[0033] Performance test of lubricating coating: Spray the dispersed lubricating coating on the surface of the part under compressed air (no oil) or compressed nitrogen (the surface of the part needs to be degreased, derusted, sand blasted, ultrasonic and other surface treatment in advance). The sprayed part...

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Abstract

The invention relates to an organic-inorganic composite lubricating protective coating material with excellent space-environment resistance. According to the invention, an inorganic phosphate modifiedby a polytetrafluoro emulsion is used as a binder, a layered disulfide compound is used as a solid lubricant, antimonous oxide and a rare earth fluoride are used as auxiliary functional fillers, water is used as a diluent, and ball milling and uniform dispersion are performed to obtain the material. Performance detection results show that the coating material is a high-performance bonding solid lubricating coating. A coating prepared from the coating material has good adhesive force, flexibility and impact resistance to a metal base material, the good lubricating protection performance of thecoating material can still be kept under the long-term irradiation of atomic oxygen, ultraviolet and ionizing radiation in a space environment (especially a low-orbit space environment), and the service life of related equipment in the space environment can be effectively prolonged.

Description

technical field [0001] The invention relates to a lubricating protective coating material, in particular to an organic-inorganic composite lubricating protective coating material with excellent resistance to the space environment, which is mainly used for lubricating the surface of related equipment parts in the space environment, so as to effectively Extend the service life of equipment in the space environment. Background technique [0002] For a long time, the lubrication failure of space equipment components has been the bottleneck restricting the life and reliability of space equipment. The research of NASA, European ESA and Russian space agency shows that the failure of a considerable proportion (more than 30%) of space mechanical components is closely related to lubrication. To this end, NASA in the United States and ESA in Europe have set up special research institutions (such as the European Space Tribology Laboratory-ESTL) to conduct in-depth and systematic resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D7/61
CPCC08K2003/2227C08K2003/2251C08K2003/3009C08K2003/329C09D127/18C09D7/61C08K3/00C08K3/32C08K3/22C08K3/30C08K3/16C08K3/2279
Inventor 陈磊吴平李红轩周惠娣陈建敏
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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