GLASS FIBRE REINFORCED IMPACT STRENGTH POLYPROPYLENE RESIN COMPOSITION

摘要

The glass fiber reinforced polypropylene resin compsn. comprises: 50-89 wt.% of polypropylene risn; 10-30 wt.% of glass fiber; and 1-20 wt.% of carboxyl gp. treated propyleno homopolymer as a coupling agent. Pref. the melt index of the polypropylene resin is 5-20 degree of polymerization the melt index is measured by ASTM D 1238 method at 230≦̸C and 2,160 g. The glass fiber is surface-treated with 1 wt.% of silane based cpd.. The coupling agent is prepd. by adding below 10 wt.% of the ore more selected from acrylic acid, maleic acid, phthalic acid or benzoic acid an hydride or derives. of their carboxylic acid with polypropylene homopolymer.