Fe_3O_4纳米粒子对含刚性环的水性有机硅聚氨酯丙烯酸酯光固化膜性能的影响  

Effect of Fe_3O_4 nanoparticles on properties of photocured film of waterborne polysiloxane polyurethane acrylate containing rigid ring

作　　者：马浩钦 操越[1] 孙芳[1] MA Hao-qin;CAO Yue;SUN Fang(College of Science,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《粘接》2018年第12期26-31,57,共7页Adhesion

基　　金：国家重点研发计划(2017YFB0307800);国家自然科学基金(51273014);江苏省重点研发计划-产业前瞻与共性关键技术(BE2015058)资助

摘　　要：设计合成了一种带有刚性桥环结构的水性有机硅聚氨酯丙烯酸酯低聚物(WIBSPUA)和一种被SiO_2和氨基甲酸酯改性的可光聚合Fe_3O_4纳米粒子(Fe_3O_4@SiO_2@IPDI-HEA)。研究了该纳米粒子对WIBSPUA光固化体系的性能影响。结果表明,WIBSPUA/Fe_3O_4@SiO_2@IPDI-HEA杂化体系具有优异的光聚合性能,最终双键转化率达到85%以上;纳米粒子的加入明显提高光固化膜的耐热性和拉伸强度,当Fe_3O_4@SiO_2@IPDI-HEA添加质量为1.5%时,固化膜的初始降解温度(T_(5%))达到221.3℃,拉伸强度为29.4MPa。并且Fe_3O_4@SiO_2@IPDI-HEA可以赋予光固化膜较好的电磁性能,有望用于水性光固化吸波材料。In this paper, a waterborne polysiloxane polyurethane acrylate oligomer containing a rigid bridged ring （WIBSPUA） and a photopolymerizable Fe3O4 nanoparticle modified with SiO2 and urethane （Fe3O4 @SiO2@IPDI-HEA） were designed and synthesized. The effect of the nanoparticles on the performances of WIBSPUA photocurable system was studied. The results showed that the WIBSPUA/Fe3O4 @SiO2@IPDI-HEA hybrid system had excellent photopolymerization performance, and the final double bond conversion was over 85%. The nanoparticles Fe3O4 @SiO @IPDI-HEA significantly 3 4 2improved the heat resistance and tensile strength of the cured film. When the Fe3O4 @SiO @IPDI-HEA content was 1.5wt.%, the initial decomposition temperature （T ） of the cured film reached 221.3℃, and the tensile strength reached 29.4MPa. Moreover, Fe3O4 @SiO @IPDI-HEA can endow the photocured film with good electromagnetic properties and be expected to be used for aqueous photocurable absorbing materials.

关 键 词：光聚合 水性有机硅聚氨酯丙烯酸酯 FE3O4纳米粒子 吸波材料 

分 类 号：TQ433.43[化学工程] TQ317.3