POE-g-MAH反应性增容HDPE/PA66共混合金性能研究

Study on Properties of Reactive Compatibilization of HDPE/PA66/POE-g-MAH Blend Alloy

以乙烯-辛烯共聚物接枝马来酸酐(POE-g-MAH)作为高密度聚乙烯(HDPE)/尼龙66(PA66)共混合金的反应性增容剂,采用熔融挤出法制备了HDPE/PA66/POE-g-MAH共混合金。研究了POE-g-MAH用量对共混合金形态结构、力学性能、流变性能和热致形状记忆性能的影响。结果表明:通过POE-g-MAH的反应性增容作用,改善了HDPE/PA66合金的界面黏结,促进了分散相粒子的细化,显著提高了合金的力学和热致形状记忆性能,并缩短了塑化时间。

It prepared high density polyethlene （HDPE）/nylon66 （PA66） blends by means of melting extrusion, which served ethylene/octane copolymer graft maleic anhydride （POE-g-MAH） as a reactive compatibilizer. The effects of the content of POE-g-MAH on morphological, mechanical properties, theological property and thermotropic shape memory property of the blends were studied. The results showed that the addition of POE-g-MAH enhanced the interfacial interaction between HDPE and PA66, and refined the dispersive phase sizes. It also greatly improved the mechanical properties and thermotropic shape memory property of the blends and shortened the plasticizing time.