POROUS PTFE, PTFE MIXTURE, METHOD FOR PRODUCING POROUS PTFE AND ELECTRIC WIRE OR CABLE PRODUCED BY USING POROUS PTFE

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of giving a porous PTFE having fine texture and high mechanical strength and enabling easy control of the pore ratio.;SOLUTION: The porous PTFE is produced by forming a PTFE mixture containing PTFE powder and a pore-forming agent to a prescribed form and removing the pore-forming agent, wherein the PTFE powder is fine powder having an average secondary particle diameter of 100 m. Also there is provided another porous PTFE, wherein the PTFE powder is a fine powder composed mainly of powder having a secondary particle diameter of 30 m.;COPYRIGHT: (C)2010,JPO&INPIT