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1. 发明授权

US06569935B2 Polyolefin-based composite resin composition having low coefficient of linear thermal expansion 失效
标题翻译：具有低线性热膨胀系数的聚烯烃系复合树脂组合物
公开(公告)号：US06569935B2
公开(公告)日：2003-05-27
申请号：US09751093
申请日：2000-12-29
申请人： Kie-Youn Jeong , Yong-Sub Yoo , Sung-Kun Jang , Sung-Hoon Kim
发明人： Kie-Youn Jeong , Yong-Sub Yoo , Sung-Kun Jang , Sung-Hoon Kim
IPC分类号： C08J300
CPC分类号： C08K3/34 , C08L23/04 , C08L23/16 , C08L2666/04
摘要： The present invention relates to a polyolefin-based composite resin composition having a low coefficient of linear thermal expansion, wherein the composition comprises a) 40 to 80 weight % of crystalline ethylene-propylene copolymer, b) 5 to 40 weight % of ethylene-alpha-olefin copolymer, c) 5 to 30 weight % of calcium-metasilicate based wollastonite, and d) 5 to 30 weight % of inorganic reinforcing agent based on the total composition amount. The polyolefin-based composite resin composition having a low coefficient of linear thermal expansion not only has excellent mechanical rigidity, impact resistance, heat resistance, injection moldability, product flatness, and dimensional stability, but also has a low shrinkage, a low coefficient of linear thermal expansion, and a low heat sag. Therefore, it can be used for the manufacture of automobile exterior components.
摘要翻译：本发明涉及一种具有低线性热膨胀系数的聚烯烃基复合树脂组合物，其中组合物包含a）40至80重量％的结晶乙烯 - 丙烯共聚物，b）5-40重量％的乙烯-α α-烯烃共聚物，c）5〜30重量％的硅酸钙硅灰石，d）5〜30重量％的无机增强剂。具有低线性热膨胀系数的聚烯烃类复合树脂组合物不仅具有优异的机械刚性，耐冲击性，耐热性，注塑成型性，产品平面度和尺寸稳定性，而且收缩率低，线性系数低热膨胀和低热下垂。因此，可以用于汽车外部件的制造。

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