文献类型：期刊文献

中文题名：羧基丁苯-纳米氧化硅复合粉末增韧聚苯乙烯的研究

英文题名：Toughening Polystyrene by Carboxyl Poly(butadiene-styrene)-Nano Silica Composite Powder

作者：袁荞龙[1];李长喜[1];张杰[2];朱孟钦[1]

机构：[1]超细材料制备与应用教育部重点实验室,华东理工大学上海200237;[2]燕山石化研究院,北京102549

年份：2005

卷号：18

期号：3

起止页码：387

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：上海市重点学科建设资助项目;自然科学基金资助项目(50073005)

语种：中文

中文关键词：羧基丁苯;纳米氧化硅;复合微粉;聚苯乙烯;冲击强度

外文关键词：carboxyl poly（butadiene-styrene） ; nano silica; composite powder; polystyrene; impact strength

摘要：用直接分散聚合法制备了羧基丁苯-纳米氧化硅杂化胶乳,经喷雾干燥得到的羧基丁苯-纳米氧化硅复合粉末通过本体-悬浮聚合和熔融共混法制备了高抗冲聚苯乙烯。结果表明,本体/悬浮聚合法中预聚转化率的控制与复合粉末的加入量有关,当加入的复合粉末的质量分数为0.05时,冲击强度可提高5倍,也高于熔融共混法所制备的改性聚苯乙烯。本体/悬浮聚合法制备的改性聚苯乙烯的热分解温度(Td)高于熔融共混法改性的,且Td随复合粉末加入量的增加而提高,但改性聚苯乙烯的刚性有一定程度的降低,而对材料的玻璃化转变温度影响不大。
Carboxyl Poly（butadiene-styrene） （PBS）-nano silica hybrid latex was prepared by one-step dispersion polymerization, and the PBS-silica composite powder was obtained by spray-drying. The bulk/suspension and melting-blend processes were applied to produce toughened polystyrene. The results showed that the addition of the composite powder was related to the conversion of the prepolymerization in bulk/suspension process. The impact strength of the toughened polystyrene was increased to 5 times as high as that of PS when ω = 0.05 composite powder was added into the pristine polystyrene. The impact strength and the decomposition temperature（ Td ） of the polystyrene prepared by bulk/suspension process were higher than that by melting-blend. Meanwhile, the Td of the toughened polystyrenes was increased, and the glass transition temperature of the toughened polystyrene was hardly changed and the rigidity of the polystyrene was tampered to a certain extent with the addition of the composite powder.