酮肼交联改性水性聚氨酯/聚丙烯酸酯的制备与性能研究  

Study on properties and synthesis of ketone hydrazine crosslinking modified waterborne polyurethane/polyacrylate emulsion

作　　者：沈一丁[1] 郭丹慧[1] 王海花[1] 费贵强 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第5期77-82,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21204046);教育部留学回国人员科研启动基金项目(2012[1707]);陕西省教育厅重点实验室科研计划项目(13JS018)

摘　　要：采用原位无皂乳液聚合法合成聚氨酯/聚丙烯酸酯乳液,并在合成过程中引入酮单体和肼单体实现酮肼交联改性聚氨酯/聚丙烯酸酯.研究了不同酮单体含量对水性聚氨酯/聚丙烯酸酯乳液及成膜性能的影响.并通过红外光谱(FT-IR)、热重分析(TG)等对其进行表征.研究结果表明,随着DAAM用量的增加,乳液的粘度、粒径得到增大,聚合物的交联密度增强;当DAAM含量为3%时,聚合物的力学性能、耐水性、热稳定性最好.Ketone hydrazine crosslinking modified waterborne polyurethane/polyacrylate emulsion was prepared through in-situ polymerization,and bring in diacetone-acryloamide（DAAM）and adipic dihydrazide（ADH）in the process.Meanwhile,we studied the effect of different DAAM contents on emulsion and film of waterborne polyurethane/polyacrylate.And the structure was characterized via infrared spectroscopy（FT-IR）and thermogravimetric analysis（TG）and so on.The results showed that with the increase of DAAM content,the viscosity of the emulsion and particle size increased,the crosslinking density of the polymer enhanced,too.When DAAM content was 3%,the mechanical properties of polymer,water resistance,and thermal stability was the best.

关 键 词：聚氨酯/聚丙烯酸酯 DAAM含量 交联改性 耐水性 力学性能 

分 类 号：TQ630.4[化学工程—精细化工]