目前国产车塑料部件所用树脂和专用料大部分仍依靠国外进口。甚至聚丙烯树脂因品种和质量上的原因,也还有相当的进口份额。据统计,1999年轿车塑料零配件使用国产聚丙烯树脂不到1000t。 分析其原因,有以下几点:①过去树脂生产厂长期对牌号开发和更新不太重视,近几年才开始汽车专用树脂牌号的开发。②汽车零配件用塑料专用料质量要求高,但数量又不大,加上汽车专用料的研制技术难度大,用户考核和认可手 At present, most of the resins and special materials used in domestic car plastic parts still rely on foreign imports. Even polypropylene resin due to variety and quality reasons, there is still a considerable share of imports. According to statistics, in 1999 the use of domestic plastic parts of car polypropylene resin less than 1000t. Analysis of the reasons, the following points: ① resin manufacturers in the past long-term development and updating of the brand less attention, in recent years began the development of automotive resin grades. ② auto parts plastic materials with high quality requirements, but the quantity is not large, coupled with the development of automotive materials for technical difficulties, user assessment and recognition of hand