摘要
为了满足烟包印刷行业低VOC含量的要求,以耐高温聚酯二元醇(NCL2000)作为软段,4,4′-二环己基甲烷二异氰酸酯(HMDI)、亲水扩链剂二羟甲基丁酸(DMBA)、扩链剂1,4-丁二醇(BDO)、后扩链剂乙二氨基乙磺酸钠(AAS)、封端剂丙烯酸羟乙酯(HEA)、甲基丙烯酸甲酯(MMA)作为硬段,制备了无三乙胺、零VOC的水性聚氨酯-丙烯酸酯(WPUA)复合乳液,研究了MMA对WPUA复合乳液的制备及胶膜性能的影响,并通过傅里叶变换红外光谱(FTIR)、热重分析(TGA)等测试手段对WPUA乳液及其胶膜的结构和性能进行分析。结果表明,随MMA添加量增大,WPUA复合乳液平均粒径增大,WPUA胶膜的吸水率随之减小。当热失重率为50%时,MMA改性后的WPUA胶膜比纯水性聚氨酯(WPU)胶膜的分解温度提高了52.85℃。
In order to satisfy the low VOC requirement in cigarette printing industry,polyurethane-acrylate composite emulsion with zero VOC and no triethylamine was prepared using thermotolerant polyester diol（NCL2000）as soft segment,4,4′-dicyclohexyl methane diisocyanate（HMDI）and methyl methacrylate（MMA）as hard segments,dimethylolbutanoic acid（DMBA）as hydrophilic chain extender,1,4-butanedil（BDO）as chain extender,hydroxyl ethyl acrylate（HEA）as capping agent.The effect of MMA content on the preparation of WPUA emulsion and the properties of WPUA coating film were studied.The WPUA emulsion and film were characterized by FT-IR,thermogravimetric（TGA）and more.The results showed that the particle size of WPUA emulsion increased from 45.09 nm to 133.1 nm with the increasing of MMA content.While the water absorption decreased.The decomposition temperature of WPUA film modified with methyl methacrylate（MMA）was increased by 52.85℃ than that of pure waterborne polyurethane（WPU）film when the mass loss rate was 50%.
作者
王磊
刘贵茹
赖小娟
张丹年
穆瑞花
Wang Lei Liu Guiru Lai Xiaojuan Zhang Dannian Mu Ruihua(Key laboratory of Auxiliary Chemistry ＆ Technology for Chemical Industry,Ministry of Education,Shaanxi University of Science b- Technology,Xi,an 710021 Shaanxi Research Institute of Agricultural Products Processing Technology,Xi,an 710021 Xi,an Datian New Materials Co., Ltd. ,Xi,an 710075 School of Environmental and Chemical Engineering,Xi,an Polytechnic University, Xi,an 710048)
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第10期211-214,共4页
New Chemical Materials
基金
国家自然科学基金(51103081)
陕西省科技计划项目(2016GY-241)
关键词
水性聚氨酯
封端剂
复合乳液
水性聚氨酯-丙烯酸酯
waterborne polyurethane, capping agent, composite emulsion, waterborne polyurethane-acrylate
