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Nov 17, 2016
In a variety of self-lubricating engineering plastics, polyimide as a result of outstanding thermal stability, mechanical properties, anti-radiation and solvent resistance, and in high temperature, high and low pressure and high speed and other extreme environments have good friction and wear properties , Is a class of potential applications in the field of tribology of the matrix material.Therefore, the tribological properties of various polyimides have been attracting more and more attentions from scholars at home and abroad for nearly 30 years.
Polyimide and its composites have been widely used in various fields of tribological systems, such as being used for a variety of bearings, gears, seals, friction pairs and a variety of friction plates.Especially in the vacuum environment, PI shows excellent friction and wear properties, so that the application in the aerospace field is very successful, such as Vespel polyimide composite material has been made into a variety of gears used in space.Such materials are easy to machine, the surface is easy to plan and suitable for precision bearings.
In the mechanical industry, polyimide composite materials can be used as bearing cage, bearing agitator shaft, medical device parts and food processing machinery, in the automotive industry as a clutch sliding material, compressor sealing materials.