中国塑料 ›› 2016, Vol. 30 ›› Issue (06): 13-17 .DOI: 10.19491/j.issn.1001-9278.2016.06.004

• 材料与性能 • 上一篇    下一篇

马来酸酐含量及制备工艺对PA6/POE-g-MAH/Nano-CaCO3复合材料形态及力学性能的影响

冯国威,张玲   

  1. 华东理工大学
  • 收稿日期:2016-01-04 修回日期:2016-03-03 出版日期:2016-06-26 发布日期:2016-06-26

Influence of Maleic Anhydride Content and Processing Conditions on Morphology and Mechanical Properties of Polyamide 6/POE/POE-g-MAH/Nano-CaCO3 Composites

  • Received:2016-01-04 Revised:2016-03-03 Online:2016-06-26 Published:2016-06-26

摘要: 通过改变共混物中乙烯辛烯共聚物(POE)与马来酸酐接枝POE(POE-g-MAH)的比例,研究了MAH含量对聚酰胺6(PA6)/POE/POE-g-MAH/纳米碳酸钙(nano-CaCO3)复合材料的微观结构和力学性能的影响。结果表明,MAH含量较高时,POE-g-MAH与PA6基体的相容性好,复合材料的冲击强度最高;制备工艺对复合材料的形态及力学性能有很大影响,采用两步法制备的复合材料中nano-CaCO3分散效果更好,其增容作用使弹性体分散相直径增大约100 nm,冲击强度较一步法提高21 %。

关键词: PA6/POE-g-MAH/nano-CaCO3, MAH含量, 制备工艺, 力学性能, 相形态

Abstract: In this paper, the influence of MAH content on the morphology and mechanical properties of PA6/POE/POE-g-MAH/nano-CaCO3 composites was studied by changing the ratio of POE and POE-g-MAH. SEM images showed better compatibility between the PA6 matrix and POE elastomer when the MAH content was higher, resulting in the highest impact strength of the composites. Furthermore, it was found that the morphology and mechanical properties of the composites were greatly affected by the processing method. Nano-particles dispersed well in the matrix when the composites were prepared by a two-step processing method. The size of POE phase was enlarged about 100 nm by the formation of core-shell structure with nano-CaCO3 particles. As a result, the impact strength of the composites made by the two-step method increased 21 % compared with that of the composites by the one-step method.

Key words: PA6/POE-g-MAH/nano-CaCO3, MAH content, processing condition, mechanism properties, morphology