| 摘要 |
<p>Polyester compositions comprising:
- 3 to 40 weight percent, preferably 3 to 30 weight percent, of at least one polyester, preferably polybutylene terephthalate, polytrimethylene terephthalate, polyethylene terephthalate, poly(ethylene 2,6-naphthoate), and poly(1,4-cyclohexyldimethylene terephthalate).;
- 25 to 50 weight percent non-fibrous graphite, preferably a platy or particulate graphite;
- 10 to 40 weight percent inorganic filler selected from the group consisting of wollastonite, glass fibers, aramid fibers, ceramic fibers, potassium titanate whiskers, or combinations of them;
- 3 to 10 weight percent copolyether ester elastomer;
wherein: the amount of a + b+ c + d is 100 weight percent of the composition;
the amount of b + c is at least 50 weight percent of the composition; the weight ratio of copolyether ester elastomer to polyester is from 0.3 to 0.4; and the composition has at least a 0.2 percent elongation, a thermal conductivity of at least 3 WmK, and a tensile strength of at least 25 MPa. Articles prepared from these compositions.</p> |
