| 摘要 |
PURPOSE:To obtain the title composition having a high specific gravity and a high bending modulus, by kneading a specified aromatic polycarbonate with a specified aluminum oxide and a specified fibrous reinforcement. CONSTITUTION:A mixture comprising 20-80wt.% aromatic polycarbonate of an MW of 10,000-100,000, 10-70wt.% aluminum oxide produced by the Bayer process and having a specific gravity of 3-4, a mean particle diameter of 0.1-100mu and an Na2O content <=0.1wt.% and 10-70wt.% chopped strand fibrous reinforcement of a fiber diameter of 2-30mu and a fiber length of 0.5-6mm, selected from among a glass fiber, a carbon fiber, a metallic fiber, an aromatic polyamide, a wholly aromatic polyester fiber, etc. is kneaded to obtain the title composition of a specific gravity >=1.5 and a bending modulus >=70X10<3>kg.f/cm<2>. |
