| 摘要 |
PROBLEM TO BE SOLVED: To provide a glass-fiber-reinforced polypropylene pellet having simultaneously improved various strength characteristics (tensile breaking stress, flexural strength, Charpy impact strength, vibration fatigue strength, etc.). SOLUTION: The long-fiber-reinforced polypropylene pellet comprises (1) 30-90 mass% matrix polymer consisting of (a) a propylene homopolymer having a nominal strain at tensile break of 10-500% and a melt flow rate of 20-500 g/10 min and (b) a propylene polymer which has been modified with an unsaturated carboxylic acid or its anhydride and is contained in a quantity of 0.5-10 mass% of the below-described long glass fibers and (2) 10-70 mass% long glass fibers having a length of 2-50 mm. A molded item yielded by molding the pellet is also provided. COPYRIGHT: (C)2005,JPO&NCIPI |
