摘要
分别考察了三羟甲基丙烷-三(3-吖丙啶基丙酸酯)(XR-100)、三烯丙基异氰脲酸酯(TAIC)、三羟甲基丙烷三甲基丙烯酸酯(TMPTMA)3种三官能团交联剂对苯乙烯-丙烯酸乳液粒径、相对分子质量、交联度、玻璃化转变温度、耐水性和耐腐蚀性的影响。结果表明:苯乙烯-丙烯酸乳液的相对分子质量、交联度和耐水性均随着3种交联剂用量增加而提高;以双键自由基聚合交联的TMPTMA和TAIC交联剂可以显著地提升苯乙烯-丙烯酸乳液的玻璃化转变温度及耐腐蚀性能;以官能团缩聚交联的XR-100交联剂无法形成致密网络结构且消耗羧基,导致涂层附着力下降,不适用于苯乙烯-丙烯酸乳液防腐体系。
Trimethylolpropane tris ( 3-aziridinylpropanoate )(XR-100), triallyl isocyanurate ( TAIC ) and trimethylopropane trimethacrylate(TMPTMA), three types of trifunctional crosslinking agents were used to modified styrene-acrylic emulsions, and their influences on the particle size distribution, molecular weight distribution, gel content,glass transition temperature,water resistance and anticorrosion properties were also discussed.The results were as follows: the particle size, molecular weight and gel content of modified emulsions would elevated with the increasing dosage of each crosslinking agents. However .the glass transition temperatures and anticorrosion properties would be improved only when the structures were crosslinked by TMPTMA and TAIC through their free radical reactive double bones.In the XR-100 crosslinking system?a dense internal structure could not be formed through poly condensation between functional groups. And the carboxyl groups on the particle surfaces would be consumed,leading to a poor wet adhesion property, which was not suited for the anticorrosion emulsion system.
作者
卞政
方永勤
Bian Zheng;Fang Yongqin(Institute of Design and Research,Changzhou University,Changzhou 213164)
出处
《化工新型材料》
CAS
CSCD
北大核心
2019年第6期176-179,共4页
New Chemical Materials
基金
常州市科技支撑计划(工业)CE20160070
关键词
苯乙烯-丙烯酸乳液
三官能团交联剂
交联度
防腐
styrene-acrylic emulsion
trifunctional crosslinking agent
gel content
anticorrosion
