Regenerated polytetrafluoroethylene products and producing method thereof

Regenerated polytetrafluoroethylene products and producing method thereof

  • CN 1,131,083 A
  • Filed: 03/11/1995
  • Published: 09/18/1996
  • Est. Priority Date: 03/11/1995
  • Status: Abandoned Application
First Claim
Patent Images

1. , a kind of production method of regenerated polytetrafluoroethylproducts products is characterized in that:

  • (1) select polyfluortetraethylewastes wastes for use, the screening decontamination, cleaning up, pulverize processing, to make granularity be 100 orders-200 orders,(2) the polyfluortetraethylewastes wastes powder is mixed by weight with inserts, its ratio is, the polyfluortetraethylewastes wastes powder;

    inserts=100;

    0-60, inserts are graphite and/or glass fibre and/or bronze powder and/or molybdenum bisuphide and/or carbon fibre and/or talcum powder and/or silica flour(3) above-mentioned mixed powder is packed into mould gives pressure, and its pressure is less than 150 kilograms per centimeter 2, (4) heating in the heating furnace of packing into, under 385 ℃

    -390 ℃

    of sintering temperatures, constant temperature kept 2-6 hour,(5) pressurization, its pressure is 70 kilograms-150 kilograms per centimeter 2, (6) natural cooling and shaping.

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