发明名称 |
Porous polytetrafluoroethylene material |
摘要 |
A porous polytetrafluoroethylene material produced by forming a mixture of an adequate amount of a liquid lubricant and polytetrafluoroethylene fine powder having an average molecular weight of at least 6,000,000, an amorphous index larger than 0.1 and a number average primary particle size of 0.1 to 0.8 microns, and a clear endothermic peak at a temperature of 347+/-3 DEG C. and an another endothermic peak or shoulder at a temperature between 330 DEG C. and the temperature of said clear endothermic peak on a crystalline melting chart recorded by a differential scanning calorimeter, removing the lubricant to obtain an unsintered PTFE material and expanding the unsintered polytetrafluoroethylene material at least monoaxially at a temperature higher than the melting point of polytetrafluoroethylene.
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申请公布号 |
US4760102(A) |
申请公布日期 |
1988.07.26 |
申请号 |
US19860884662 |
申请日期 |
1986.07.15 |
申请人 |
NITTO ELECTRIC INDUSTRIAL CO., LTD.;DAIKIN KOGYO CO., LTD. |
发明人 |
MORIYAMA, YASUHIRO;SUZUKI, SHOJI;YOSHIMURA, ATSUO;KAWAKAMI, KANJI;HOASHI, JYUZAEMON;FUMOTO, SYOZO;OSHITA, KIYOSHI |
分类号 |
B29D99/00;B29C55/00;B29C59/00;B29C67/00;B29C67/20;C08J5/18;C08J9/00;C08J9/24;C08J9/28;(IPC1-7):C08J9/24 |
主分类号 |
B29D99/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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