| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically-conductive fluororesin composition of a thermally fusible fluororesin powder and an electrically-conductive carbon black with a stabilized electric resistance, capable of obtaining a smooth surface state of a molded product to be obtained with good accuracy, suitable for a supporting jig or a tube used for a semiconductor production apparatus, a roll or a tube for electronic office equipments, and a manufacturing method therefor. SOLUTION: The composition of an electrically conductive carbon black as an acetylene black and a thermally fusible fluororesin powder as an emulsion-polymerized tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer has two crystallization peaks at the time of being crystallized with a temperature lowering rate of 12°C/minute from a temperature not lower than the melting point of the thermally fusible fluororesin by a differential scanning calorimeter device. The ratio of the heights of the crystallization peaks (high temperature side peak/low temperature side peak) is 0.65 or more, or the ratio of the high temperature side crystallization peak area [high temperature side area/(high temperature side area + low temperature side area)] is 0.18 or more. COPYRIGHT: (C)2008,JPO&INPIT
|
