Long fiber-reinforced thermoplastic resin composition having improved impact resistance and molded article using the same

摘要

A long fiber-reinforced thermoplastic resin composition having improved impact resistance, includes: (A) a long fiber reinforcement; (B) an ethylene-propylene copolymer; (C) a first thermoplastic elastomer; (D) a second thermoplastic elastomer; (E) a functional group-grafted modified polypropylene resin; and (F) an inorganic filler.

主权项

1. A long fiber-reinforced thermoplastic resin composition having improved impact resistance, the composition comprising:
(A) About 10 wt % to about 23 wt % of a long fiber reinforcement; (B) About 50 wt % to about 77 wt % of an ethylene-propylene copolymer; (C) About 5 wt % to about 18 wt % of a first thermoplastic elastomer having a melt index of about 1.0 g/10 min to about 5.0 g/10 min, as measured at a temperature of 230° C. and a load of 2.16 kg; (D) About 5 wt % to about 18 wt % of a second thermoplastic elastomer having a melt index of about 30 g/10 min to about 60 g/10 min, as measured at a temperature of 230° C. and a load of 2.16 kg; (E) About 0.05 wt % to about 7 wt % of a functional group-grafted modified polypropylene resin; and (F) About 0.5 wt % to about 5 wt % of an inorganic filler, wherein each of the first thermoplastic elastomer (C) and the second thermoplastic elastomer (D) includes at least one of a copolymer of ethylene with an alpha-olefin having 4 or more carbon atoms, and a styrene-diene copolymer.