马来酸酐改性聚丙烯与尼龙66共混物的性能

2000年8月　《塑料科技》 PLASTICS SCI. &TECHNOLOGY

顾书英,　马广华,　罗源　(同济大学材料学院高分子材料系,上海,　200092)

摘　要:　用熔融接枝法制备了马来酸酐改性聚丙烯(PP-g-MAH),研究了引发剂用量对接枝过程的影响及改性PP与PA66共混物的性能。结果表明:改性PP与PA66的相容性很好,从而大大提高了PA66的冲击强度,降低了PA66的吸水性。

关键词:　熔融接枝,马来酸酐改性PP,相容性

中图法分类号:TQ325.1+4;文献标识码:A

1　前言

尼龙与其它塑料相比,因其本身具有较高拉伸强度和冲击强度,极为优越的耐磨性和耐腐蚀性,以及自润滑等优点,作为金属替代品广泛用于机械、汽车、电子等行业,但存在吸水性大,干态和低温冲击强度低,吸水后尺寸不稳定等缺点,使其应用受到限制,所以对尼龙改性的研究成为工程塑料领域内的热门课题之一。有关尼龙的改性研究主要侧重于增容方式[1]、增容机理[2、3]、增韧机理[4]以及应用性能[5]等方面的研究。本文主要研究了尼龙66与改性PP共混物的力学性能,探讨了MAH接枝改性PP的制备工艺。

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Property of Nylon66Co-compounding with PP Modified by Maleic Anhydride
GUShu-ying, MA Guang-hua, LUOYuan (Department of PolymerMaterials, College ofMaterials Science and Engineering,Tongji University, Shang-hai, 200092, China)
ABSTRACT:Maleic anhydride grafting polyprogylene was prepared by melt grafting in this paper. At the same time, the effect of the amount of initiator on the grafting process and the properties of blends of PA66 and PP-g-MAH were studied. It was found that the compatibility between the two phases of blends was quite good, and the impact strength of the blends was increased while the moisture pickup rate decreased.

KEYWORDS:Melt grafting; Maleic anhydried grafting polypropylene; Compatibility
 

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