| 摘要 |
PURPOSE:To obtain the titled composition having small linear expansion coefficient, high resistance to thermal deformation, excellent physical properties such as impact resistance, and extremely excellent moldability and weather resistance, giving a molded article having good surface state, and suitable for rainwater guttering, etc., by compounding a vinyl chloride resin with short glass fibers, an inorganic filler, a modifier, a processing aid, and magnesium oxide. CONSTITUTION:(A) 100pts.(wt.) of a vinyl chloride resin is compounded with (B) 5-30pts. of short glass fibers (e.g. chopped glass fibers cut to 0.05-3mm. long and preferably surface-treated with a coupling agent), (C) 10-50pts. of an inorganic filler (e.g. ultrafine calcium carbonate), (D) 5-20pts. of a modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, ABS and MBS, (E) 1-10pts. of a processing aid selected from MAS and polymethyl methacrylate and (F) 0.05-3pts. of magnesium oxide. |
