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Manufacturing method of ketone-anhydride type polyimide composite retainer tube blank

A polyimide technology and a manufacturing method, which are applied in the field of cages, can solve the problems of insoluble and infusible, poor formability and the like, and achieve the effects of high tensile strength, high high temperature strength retention rate, and improved tribological properties.

Active Publication Date: 2013-09-18
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since there are no ether bonds and thioether bonds in the molecular chain of ketone anhydride polyimide, the rigidity of the molecular chain is much higher than that of ether anhydride polyimide, which is difficult to dissolve and melt, and has poor molding processability. High temperature binder, there is no report of high temperature resistant ketone anhydride type polyimide cage tube blank in China

Method used

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  • Manufacturing method of ketone-anhydride type polyimide composite retainer tube blank
  • Manufacturing method of ketone-anhydride type polyimide composite retainer tube blank
  • Manufacturing method of ketone-anhydride type polyimide composite retainer tube blank

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Effect test

Embodiment 1

[0023] Method of the present invention contains five steps altogether:

[0024] The first step is drying treatment of ketone anhydride type polyimide molding powder and carbon fiber;

[0025] In the second step, proportioning is carried out by weight percentage and a ketone anhydride type polyimide molding powder composite material is prepared;

[0026] The third step is the size and composition of the cage mold;

[0027] The fourth step is the thermocompression molding of ketone anhydride type polyimide molding powder composite material;

[0028] The fifth step is the annealing treatment of the tube blank of the ketone anhydride type polyimide composite cage.

[0029] The above-mentioned second step uses the ketone anhydride type polyimide molding powder as the base material and adds carbon fiber and lubricating modified material polytetrafluoroethylene and prepares the ketone anhydride type polyimide molding powder composite material;

[0030] The above-mentioned third st...

Embodiment 2

[0051] The cage mold includes a jacket, a core, a punch and a base, and the inner diameter of the cage is set to d=28.2mm, the outer diameter is D=35.6mm, and the height is H=6.6mm;

[0052] The first step is ketone anhydride type polyimide molding powder and carbon fiber drying treatment

[0053] Put the ketone anhydride type polyimide molding powder and carbon fiber in a drying oven for drying treatment. The temperature of the drying oven is controlled at 200°C. After drying for 3 hours, take it out and cool it to room temperature, and then pass through a 200-mesh sieve and store it in an independent seal. spare;

[0054] The second step is to proportion according to the weight percentage and prepare the ketone anhydride type polyimide molding powder composite material. The weight percentage ratio of the ketone anhydride type polyimide composite cage tube blank material is: After mixing 75% imide molding powder, 13% carbon fiber, and 12% polytetrafluoroethylene, put the abo...

Embodiment 3

[0066] The cage mold includes a jacket, a core, a punch and a base, and the inner diameter of the cage is set to d=28.2mm, the outer diameter is D=35.6mm, and the height is H=6.6mm;

[0067] The first step is ketone anhydride type polyimide molding powder and carbon fiber drying treatment

[0068] Put the ketone anhydride type polyimide molding powder and carbon fiber in a drying oven for drying treatment. The temperature of the drying oven is controlled at 200°C. After drying for 3 hours, take it out and cool it to room temperature, and then pass through a 200-mesh sieve and store it in an independent seal. spare;

[0069] The second step is to proportion according to the weight percentage and prepare the ketone anhydride type polyimide molding powder composite material. The weight percentage ratio of the ketone anhydride type polyimide composite cage tube blank material is: Imide molding powder 85%, carbon fiber 8%, polytetrafluoroethylene 7%; after proportioning, put the a...

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Abstract

The invention discloses a manufacturing method of a ketone-anhydride type polyimide composite retainer tube blank. The retainer tube blank material is prepared from the following three components in percentage by weight: 75-85% of ketone-anhydride type polyimide molding powder, 8-15% of carbon fiber and 5-12% of polytetrafluoroethylene. The preparation method comprises the process steps of drying, proportioning, annealing and the like. The ketone-anhydride type polyimide composite retainer tube blank prepared by the method has the characteristics of light weight, high tensile strength, high-temperature resistance and excellent tribological properties; the ketone-anhydride type polyimide composite retainer tube blank contains ketone-anhydride type polyimide, carbon fiber and polytetrafluoroethylene, and the retainer material keeps the advantages of high-temperature resistance, high tensile strength and high high-temperature strength conservation rate of the ketone-anhydride type polyimide, and also improves the tribological properties of the polyimide at the same time.

Description

technical field [0001] The invention relates to the technical field of cages, in particular to a method for manufacturing a ketone anhydride type polyimide composite cage blank. Background technique [0002] At present, the polyimide used to make bearing cages is mainly ether anhydride polyimide, and its glass transition temperature generally does not exceed 260°C. Therefore, it cannot meet the needs of high-temperature (greater than 260°C) bearings. Ketone anhydride polyimide has excellent mechanical and tribological properties, and has a high glass transition temperature (greater than 330°C), long-term working temperature is not less than 280°C, and the price is much lower than that of high-temperature resistant homophenylene polyimide. imide, so it has an obvious price advantage in the high temperature field. [0003] However, since there are no ether bonds and thioether bonds in the molecular chain of ketone anhydride polyimide, the rigidity of the molecular chain is mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L27/18C08K7/06C08K3/04B29D23/00
Inventor 孙小波王子君李文超王枫冯颖张素娥
Owner LUOYANG BEARING RES INST CO LTD
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