| 摘要 |
PURPOSE:To produce fluorine-contained resin foam having high degree of expansion, having uniform and fine closed cells free from coloring, by blending a fluorine-contained resin with a polycarbonyloxy compound and molding the blend in a molten state under heating. CONSTITUTION:(A) 100pts.wt. fluorine-contained resin, preferably (co)polymer of chlorotrifluoroethylene, 2,2-difluoroethylene, etc., having >=50wt% fluorine, 20,000-1,000,000 number-average molecular weight, and 0.5-30g/10min melt flow index is blended with (B) 0.01-50pts.wt., preferably 0.05-10pts.wt. alipahtic, alicyclic or aromatic carboxlic acid containing two or more carboxyloxy groups in the molecule or its salt, such as oxalic acid, citric acid, etc., 0.01-10pts.wt. blowing nucleating agent (talc, etc.), 0.005-5pts.wt. metallic ompound, and other additives, and molded in a molten state under heating. |
