| 摘要 |
A polypropylene resin composition comprising: a polypropylene, 50 SIMILAR 70% by weight; a polystyrene-ethylene/propylene-polystyrene tri-block copolymer containing 15 SIMILAR 40% by weight styrene, 3 SIMILAR 15% by weight; a polystyrene-ethylene/butene-polystyrene tri-block copolymer containing 15 SIMILAR 40% by weight styrene, 3 SIMILAR 15% by weight; and a talc, 10 SIMILAR 30% by weight; wherein the proportion of the above-mentioned polystyrene-ethylene/propylene-polystyrene tri-block copolymer with respect to the total amount of the above-mentioned polystyrene-ethylene/propylene-polystyrene tri-block copolymer and the above-mentioned polystyrene-ethylene/butene-polystyrene tri-block copolymer is 20 SIMILAR 80% by weight; is a material with a superior balance of physical properties, having high rigidity, superior impact resistance and tensile elongation, and in particular, being excellent for use as a material for solid molded articles such as parts for automobiles, and the like. |
