加核型超支化聚氨酯丙烯酸树脂的合成及涂膜性能研究  

Synthesis of UV curable hyperbranched polyurethane acrylate with core and its film performance

作　　者：徐朝华[1] 陈婵[2] 孙宁[1,2] 李珩[1] 李亦彪[2] 

机构地区：[1]江门职业技术学院材料技术系,江门529090 [2]五邑大学化学与环境工程学院,江门529020

出　　处：《化工新型材料》2017年第2期101-103,共3页New Chemical Materials

基　　金：国家自然科学基金项目(51302107;21302146);广东省自然科学基金项目(2015A030313804);广东省科技计划项目(2015A010105036;2012A090300004);广东省高等学校优秀青年教师培养计划(YQ2015225;Q2015226);江门市科技计划项目(江财工[2016]143;江科[2016]190)

摘　　要：选用甘油为核,二乙醇胺(DEOA)和异佛尔酮二异氰酸酯(IPDI)为原料,引入扩链剂新戊二醇(NPG),制得含扩链剂的端羟基加核型超支化聚氨酯(HBPU-OH);进一步与半加成产物IPDI-HEA反应,引入端丙烯酸双键,制得三端羟基的加核型超支化聚氨酯丙烯酸酯(HBPUA),并对其进行表征。FT-IR及NMR测试表明成功合成了HBPUA;DSC测试表明HBPUA的玻璃化转变温度(Tg)比HBPU-OH的低。含三端羟基的超支化聚氨酯丙烯酸酯(HBPUA-N-3)与目标树脂的相容能力更好。涂膜性能测试表明当HBPUA-N-3加入量为10%时,复合涂膜柔韧性和附着力没有明显变化,柔韧性≤2,附着力为2级;铅笔硬度和抗冲击强度都有明显提高,铅笔硬度为3H,抗冲击强度是50MJ/cm^2。Hyperbranched polyurethane（HBPU-OH）were synthetized from glycerol as the core,diethanolamine（DEOA）,isophorone diisocyanate（IPDI）and neopentyl glycol（NPG）as the extension chain,which endcapped by multiple hydroxyl groups.The hyperbranched polyurethane acrylate with three terminal hydroxyl groups（HBPUA-N-3）containing urethane groups and acrylic double bonds was synthesized by the reaction of HBPU-OH and the semiadduct isocyanatehydroxyethyl acrylate（IPDI-HEA）.FT-IR and NMR indicated that HBPUA was successful synthetized.DSC results instructed that glass transition temperature of HBPUA-N-3was significantly lower than corresponding HBPU-OH.The compatibility test results showed that the compatibility of HBPUA-N-3with target resin was better.Paint films performance test showed that when the addition of HBPUA-N-3was 10%（wt）,the flexibility was equal or less than 2grade and adhesion 2grade.However,the pencil hardness and impact strength of composite coating film were significantly improved,namely 3H,50MJ/cm2 respectively.

关 键 词：加核型 UV光固化 超支化聚氨酯丙烯酸酯 性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TQ630.1