自交联型水性聚丙烯酸酯分散体的制备及其性能  

Preparation and Property of Self⁃Crosslinkable Water⁃Based Polyacrylic Dispersion

作　　者：李兰 崔熙 俞其洪 边江海 汪洋 施冬健 张洪吉 东为富 Li Lan;Cui Xi;Yu Qihong;Bian Jianghai;Wang Yang;Shi Dongjian;Zhang Hongji;Dong Weifu(School of Chemical Materials Engineering,Jiangnan University,Wuxi Jiangsu 214122,China;The Sixth Natural Gas Plant,PetroChina Changqing Oilfield Company,Yulin Shaanxi 718500,China;Jiangsu Tianyin Chemical Limited Company,Wuxi Jiangsu 214262,China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]长庆油田分公司第六采气厂,陕西榆林718500 [3]江苏天音化工有限公司,江苏无锡214262

出　　处：《辽宁石油化工大学学报》2021年第1期1-7,共7页Journal of Liaoning Petrochemical University

基　　金：国家自然科学基金项目(BK20150135)。

摘　　要：以甲基丙烯酸甲酯(MMA)为硬单体、丙烯酸丁酯(BA)为软单体、丙烯酸(AA)为功能单体、甲基丙烯酸乙酰乙酰氧基乙酯(AAEM)为交联单体、过氧化苯甲酸叔丁酯为引发剂、乙二醇丁醚为溶剂,通过自由基溶液聚合经转相方式制备了自交联型丙烯酸酯分散体,该分散体在烘烤条件下不需要外加交联剂即可发生自交联反应。研究了丙烯酸、甲基丙烯酸乙酰乙酰氧基乙酯和固化时间等因素对树脂分散体和涂膜性能的影响。结果表明,优化的配方为:AA质量占单体总质量的3.5%、AAEM质量占单体总质量的5.0%、固化温度为180℃、固化时间为1.0 h。红外光谱和凝胶渗透色谱分析表明,AAEM成功接到了丙烯酸树脂分子链上;扫描电镜和粒度分析仪分析表明,乳胶粒呈球形且分布均匀;差示扫描量热分析表明,合成后的树脂分散体在高温下烘烤一段时间后,涂膜的玻璃化转变温度明显提高。By using methyl methacrylate(MMA)as the harder monomer,butyl acrylate(BA)as the softer monomer,acrylic acid(AA)as the functional monomer,acetoacetoxyethyl methacrylate(AAEM)as the crosslinking monomer,tert⁃butyl peroxybenzoate as the initiator,propylene glycol butyl ether as the solvent for prepared self⁃crosslinking acrylate emulsion by free radical solution polymerization and phase inversion,and the emulsion could be self⁃crosslinked after baking at high temperature without additional crosslinking agent.This article mainly studied the influence of acrylic acid,acetoacetoxyethyl methacrylate and curing time on the performance of the polyacrylic resin dispersion and the film property.The results show that the optimized formula is as follows:The dosage of AA and AAEM are 3.5%and 5.0%of the total monomer mass,respectively,and the baking time is 1.0 h at a curing temperature of 180℃.FT⁃IR and GPC analysis showed that AAEM was successfully attached to the molecular chain of acrylic resin;SEM and particle size analyzer analysis showed that the TG of the film is latex particles were spherical and uniformly distributed;DSC analysis showed that after the synthesized resin dispersion is significantly increased after the synthesized resin dispersion is baked at high temperature for a period of time.

关 键 词：甲基丙烯酸乙酰乙酰氧基乙酯 聚丙烯酸酯 水性分散体 自交联 

分 类 号：TE626[石油与天然气工程—油气加工工程]