| 摘要 |
PURPOSE:A composition useful as thin molded articles such as rainwater pipes, deck materials, etc., having low coefficient of linear expansion, improved impact resistance, molding properties and weather resistance, obtained by blending a vinyl chloride resin with glass short fibers, gypsum fibers, chlorinated PE, etc. as an improver for increasing adhesivity between them, a processing auxiliary, and a plasticizer. CONSTITUTION:(A) 100pts.wt. vinyl chloride resin (especially preferably PVC) is blended with (B) 5-30pts.wt. glass short fibers (preferably glass chop having 0.05-3mm. length in existence in a molded article, whose surface is treated with a coupling agent such as epoxysilane, etc.), (C) 5-50pts.wt. gypsum fibers (preferably gypsum fibers having 100-200mu diameter, whose surface is treated similarly to the component B), (D) 5-20pts.wt. one or more of chlorinated PE, ethylene- vinyl acetate copolymer, ABS, and MBS as an improver, (E) 1-5pts.wt. one or more of MAS and PMMA as a processing auxiliary, and (F) 0.1-5pts.wt. plasticizer (preferably DOP).
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