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

作　　者：龙俊 冯连芳[1,2] 顾雪萍 张才亮[1,2] LONG Jun;FENG Lian-fang;GU Xue-ping;ZHANG Cai-liang(State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Institute of Zhejiang University-Quzhou,Quzhou 324000,China)

机构地区：[1]化学工程联合国家重点实验室(浙江大学),浙江大学化学工程与生物工程学院,浙江杭州310027 [2]浙江大学衢州研究院,浙江衢州324000

出　　处：《高校化学工程学报》2022年第1期110-117,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家重点研发计划(2016YFB0302202)。

摘　　要：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。The modification of poly(ethylene-co-octene)(POE)by grafting maleic anhydride(MAH)and reacting with amino-silicone oil(PDMS-NH_(2))was conducted to form partially crosslinked POE(POE-PDMS)with branched structure for solving the problem of easy cell rupture in the foaming process of POE,and microcellular foaming of POE-PDMS was carried out with supercritical carbon dioxide as foaming agent.The foaming behavior and compressive property of the modified POE by polydimethylsiloxane(PDMS)were systematically investigated.The results showed that the introduction of PDMS could greatly increase the melt strength,improve the solubility of carbon dioxide and foaming property,and broad the range of foaming temperature.The microcellular foaming material of POE-PDMS with cell density of 1.76×10^(9) cells×cm^(-3) and average cell diameter of 7.3μm was obtained,and its compressive strength was also improved.

关 键 词：乙烯-1-辛烯共聚物 氨基硅油 超临界二氧化碳 微孔发泡 

分 类 号：TQ340.64[化学工程—化纤工业]