三官能团交联剂改性苯乙烯-丙烯酸乳液的制备及其防腐性能研究
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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.
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.
引文
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[4]朱杨荣,张继德,杨欢,等.室温自交联杂化硅丙乳液的制备及表征[J].材料科学与工程学报,2006,24(2):244-248.
[5]张静,杨永兵,朱志开,等.含氟丙烯酸酯核壳乳液的制备与性能研究[J].涂料工业,2014,44(3):33-38.
[6]李国梁,叶仙华,乔永洛,等.高耐水白性水包水多彩涂料连续相用硅丙乳液的制备[J].涂料工业,2015,45(4):32-37.
[7]孔祥曌,麻文效,高天爽.PP织物的亲金属离子功能化改性[J].合成纤维工业,2015,38(5):35-38.
[8]张婉,黄蓓青,魏先福.单体对UV喷墨油墨体系固化速度的影响[J].包装工程,2007,28(10):45-47.
[9]郭建华,曾幸荣,罗权煜.助交联剂对过氧化物硫化EPDM/白炭黑胶料力学性能的影响[J].特种橡胶制品,2011,32(4):1-5.
[10]Gu X L,Sun H W,Kong X Z,et al.A green protocol to prepare monodisperse poly(TMPTMA-styrene)microspheres by photoinitiated precipitation polymerization in low-toxicity solvent[J].Colloid and Polymer Science,2013,291(7):1771-1779.
[11]Maureen A K,Belma E H,Larry R K,et al.Crosslinkable acrylate adhesive polymer composition:US,8524836[P].2013-09-03.
[12]Fang C,Jing Y,Zong Y Z,et al.Effect of trifunctional crosslinker triallyl isocyanurate(TAIC)on the surface morphology and viscoelasticity of the acrylic emulsion pressure-sensitive adhesives[J].Journal of Adhesion Science and Technology,2017,31(8):858-873.