Polyolefin-based thermoplastic elastomer composite and cover material for an air bag using same, and air bag module using the cover material

摘要

The present invention relates to a polyolefin-based thermoplastic elastomer composition for a vehicle airbag cover, including a polypropylene-based resin, a denatured polypropylene resin, an ionomer resin, an olefin-based copolymer elastomer and a styrene-based copolymer elastomer, an airbag cover material using the composition, and an airbag module using the airbag cover material.

主权项

1. A polyolefin-based thermoplastic elastomer composition, comprising:
a polypropylene-based resin; a denatured polypropylene resin; an ionomer resin; an olefin-based copolymer elastomer; and a styrene-based copolymer elastomer, wherein the composition does not comprise a cross-linking agent or free radical initiator for initiating cross-linking reactions among polymer elements, wherein the polypropylene-based resin is in an amount from 20 to 60 wt %, and the ionomer is in an amount from 20 to 30 wt % with reference to the total weight of the composition, wherein the denatured polypropylene resin is in an amount such that phase separation is inhibited between the polypropylene-based resin and the ionomer resin in a mixture of the composition and that cross-linking is formed by the ionomer resin in the mixture without a cross-linking reaction that uses a cross-linking agent or free radical initiator.