中国塑料 ›› 2007, Vol. 21 ›› Issue (2): 27-30.

• 材料与性能 • 上一篇    下一篇

PP/交联POE共混物力学性能和形态的研究

敖玉辉1,2,唐凯1,徐娜1,杨海东1,张会轩1,2
  

  1. 1.长春工业大学化工学院,吉林长春130012; 2.中国科学院长春应用化学研究所,吉林长春130022
  • 出版日期:2007-02-26 发布日期:2021-03-18

Study of Mechanical Properties and Morphology of PP/Cross-linked POE Blends#br#

AO Yu-hui 1,2,TANG Kai 1,XU Na 1,YANG Hai-dong 1, ZHANG Hui-xuan 1,2#br#   

  1. 1. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;
    2. Changchun Institute of Applied Chemistry, Chinese Acadermy of Sciences, Changchun 130022, China
  • Online:2007-02-26 Published:2021-03-18

摘要: 采用过氧化二异丙苯(DCP)引发POE弹性体交联,溶解性实验与熔体流动速率实验结果表明,当DCP含量从0.5 %。(质量含量,下同)增加至5.0%。时,凝胶含量从0.8%增加至12.8%,对应的共棍物的熔体流动速率从2.80 g/10 min下降至0.80 g/10 min,这是POE弹性体交联的结果。将交联后的POF:与PP共混,其与PP的共混物的冲击强度在较低的交联度时有一小范围的提高,当DCP含量超过2.0 %0后,共混物的冲击性能明显下降。扫描电镜观察表明,随着POE交联度的增加,共混物中POE:在基体中的分散明显变差,这与其冲击性能有很好的相关性。

关键词: 交联, 聚丙烯, 乙烯一辛烯共聚物, 力学性能, 形态

Abstract: POE was cross-linked using DCP. When the dosage of DCP increased from 0. 5 %0 to 5 .0%,the content of  gel increased from 0 .8%to 12. 8%,and the melt flow rate decreased from2 .80 g/10 min to 0. 8 g/10 min. The crosslinked POE was blended with PP in a twin-screw extruder.The impact strength of PP increased moderately when the cross-linked degree of POE was lower. When she content of DCP exceeded 2. 0%。,the impact strength of PP/POE blends decreased obviously. SEM showed that with the increase of cross-linked degree of POE, the dispersion size of POE phase in PP/POE blends became larger. The morphology and impact property had good correlation.

Key words: cross-linking, polypropylene, ethylene-octene copolymer, mechanical property, morphology

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