| 摘要 |
PURPOSE:To obtain a composition having excellent thermal and mechanical properties, and exhibiting excellent sliding characteristics without damaging the contacting material, by mixing an aromatic polyether ketone with fibrous filler having a Mohs hardness of lower than a specific level and a non-tackifier. CONSTITUTION:The objective composition is produced by compounding (A) 20-70(wt)% aromatic polyether ketone with (B) 20-65% fibrous filler having a Mohs hardness of <=6, preferably an acicular crystal having an average fiber length of <=100mum and an aspect ratio of >=100, e.g. potassium titanate whisker, wollastonite, etc. and (C) 10-40% non-tackifier consisting of (i) a mixture of tetrafluoroethylene resin powder having an average particle diameter of 5-35mum and graphite powder having an average particle diameter of 0.5-30mum at a ratio of 1:5-5:1, or (ii) a fluororesin having a crystal melting point of >=250 deg.C and a specific melt viscosity of 1X10<3-6> poise at 372+ or -1 deg.C, e.g. tetrafluoroethylene-perfluoroalkylviyl ether copolymer.
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