| 摘要 |
An automotive part containing at least one component formed from a composition comprising the following: (i) a crystalline, isotactic propylene homopolymer, (ii) an ethylene/alpha-olefin elastomeric impact modifier, and (iii) a reinforcing grade of filler, for example, talc. The crystalline isotactic propylene homopolymer has a flex modulus of greater than about 1930 MPa and a heat deflection temperature (HDT) of greater than about 100° C.; the ethylene/alpha-olefin interpolymer has a Tg of less than about -30° C., and a tan delta measured at 0.1 radians/s at 190° C. of less than about 2; and the filler has a HDT reinforcing efficiency of at least about 2. The automotive part has an HDT of greater than about 100° C. and a flex modulus of greater than about 1930 MPa.
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