摘要
采用熔融共混工艺制备了聚丙烯(PP)/聚烯烃热塑性弹性体(POE)共混物,用动态力学试验方法研究了PP/POE材料的动态力学特征。结果表明,PP/POE复合体系出现了低温内耗峰,POE使体系的tanδ1转变峰增强,tanδ2转变峰变宽、增强。复合体系由纯PP的耗能少的空洞化断裂方式逐步向耗能多的基体层屈服方式变化,质量比为100/15的PP/POE复合体系的低温内耗峰强度大;复合体系的室温和低温冲击强度比纯PP都有大幅度提高。
PP/POE blends were prepared by means of melt blending. The dynamic mechanical responses of PP/POE were investigated by means of dynamic mechanical thermal analysis （DMTA）. The results showed the low temperature inner cost peak （tanδ2） of PP/POE was observed. The action of POE made the tanδ1 corresponding Tg1 strengthened, and the tanδ2 corresponding Tg2 strengthened and widened. The SEM morphology of the PP/POE showed the breaking pattern with yield strain of the base was different from that of PP with hollowness. Compared with pure PP, the intensity of tanδ2 of peak of PP/POE （ 100：15） was stronger. The impact intensity at room temperature and low temperature increased obviously.
出处
《塑料工业》
CAS
CSCD
北大核心
2008年第1期46-48,共3页
China Plastics Industry
