| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject composition having excellent mirror-finished property, heat rigidity and low gasification property and suitable for a lamp reflector member by compounding calcium carbonate having a fine particle diameter and wollastonite fibers having a specific aspect ratio with a polyphenylene sulfide resin. SOLUTION: This composition is obtained by compounding (A) 100 pts.wt. of a polyphenylene sulfide resin containing >=70mol%, preferably >=90mol% of repeating unit expressed by the formula and having <=0.8wt.% weight reduction in heating at 370 deg.C and >=200(g/10min) MFR with (B) 50-400 pts.wt., preferably 100-250 pts.wt. of calcium carbonate having <=3μm average particle diameter and (C) 10-200 pts.wt., preferably 30-100 pts.wt. of wollastonite fibers having (5/1)-(15/1), preferably (6/1)-(12/1) average aspect ratio (fiber length L/fiber diameter D).
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