聚二甲基硅氧烷改性乙烯-1-辛烯共聚物微孔发泡Microcellular foaming of poly(ethylene-co-octene) modified by polydimethylsiloxane
龙俊,冯连芳,顾雪萍,张才亮
摘要(Abstract)：
针对乙烯-1-辛烯共聚物(POE)发泡过程中泡孔易破裂的问题,提出将马来酸酐(MAH)接枝到POE上、然后与多氨基硅油(PDMS-NH_2)反应的方法,形成具有支化结构并部分交联的改性POE (POE-PDMS),并以超临界二氧化碳为发泡剂进行微孔发泡,系统考察了上述改性POE的发泡行为及发泡材料压缩性能,结果表明,PDMS的引入可以大幅提高熔体强度、增大二氧化碳的溶解度、拓宽发泡温度范围、改善发泡性能,得到了泡孔密度为1.76×10~9 cells·cm~(-3)、平均泡孔直径为7.3μm的POE-PDMS微孔发泡材料,其压缩强度也得到提高。
关键词(KeyWords)： 乙烯-1-辛烯共聚物;氨基硅油;超临界二氧化碳;微孔发泡
基金项目(Foundation): 国家重点研发计划(2016YFB0302202)
作者(Author): 龙俊,冯连芳,顾雪萍,张才亮
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