Method for producing holder blank with ether anhydride type polyimide molding powder composite material

Abstract

A method for producing holder blank with ether anhydride type polyimide molding powder composite material includes performing drying processing for ether anhydride type polyimide molding powder and polyimide pulp, performing pre-opening processing for the polyimide pulp, preparing the ether anhydride type polyimide molding powder composite material and bearing holder mold size constituting, and utilizing a stored program hot press and a bearing holder mold to make the holder blank. The ether anhydride type polyimide molding powder composite material utilizes the ether anhydride type polyimide molding powder as base material, the polyimide pulp, lubrication modified polytetrafluoroethylene and carbon nanotubes are added, the ether anhydride type polyimide molding powder composite material is pressed in the stored program hot press in a hot mode through the holder mold, the holder blank produced with the ether anhydride type polyimide molding powder composite material is obtained, and the produced holder blank after being processed has the advantages of being light in weight, high in tensile strength, resistant to high temperature and friction, and the like.

Description

Technical field [0001] The invention belongs to the technical field of bearing cages, and particularly relates to a method for manufacturing a cage blank from an ether anhydride type polyimide molding powder composite material. Background technique [0002] Ether anhydride type polyimide has good mechanical properties and excellent tribological properties, and is widely used in the field of ball bearing cages, but its glass transition temperature generally does not exceed 260 ℃, and its thermal deformation temperature does not exceed 250 ℃. Therefore, it cannot be applied to the requirements of bearing cages under high temperature conditions above 220℃. [0003] One of the effective ways to improve the heat resistance of ether anhydride polyimide is by adding metals or metal oxides, non-metallic or non-metallic nitrides, inorganic fibers, and nanomaterials, through the addition and modification of the above materials The increase in the heat resistance of the ether anhydride polyi...

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Problems solved by technology

[0005] The above-mentioned modified ether anhydride polyimide has good compatibility with polyimide pulp, and the resulting ether anhydride polyimide molding powder composite material can significantly improve the durability of the bearing cage. Thermal and friction resistance, and the tensile strength can still be maintained at a high value, but the method of making bearing cage blanks from ether anhydride polyimide molding powder composite materials has not been reported so far

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