PTFE RESIN COMPOSITION
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
May 2, 2014
filing date -
May 13, 2013
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Abstract
Disclosed is a PTFE resin composition comprising 70 to 90 wt. % of polytetrafluoroethylene or modified polytetrafluoroethylene, and 30 to 10 wt. % of curved carbon fibers. The PTFE resin composition, which is prepared by blending a specific amount of curved carbon fibers with PTFE or modified PTFE, can be effectively used as a molding material that can provide a water pump lip seal material having excellent deformation resistance, abrasion resistance, and sealing properties against cooling water. In particular, even when this composition is used as a vehicle cooling water circulating pump seal, the falling of the carbon fibers can be effectively prevented even under severe conditions, i.e., cooling water seal, and the leakage of cooling water caused by deformation and abrasion during use does not occur; thus, the sealing properties thereof can be sufficiently satisfied.
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