TiO_(2)-PDA核壳结构及TiO_(2)-PDA/硅胶复合材料的制备  

Preparation of TiO_(2)-PDA core-shell structure and TiO_(2)-PDA/silicone rubber composites

作　　者：郝冬冬 张宇轩 丁永红[3] 闫秋羽 周超[3] Hao Dongdong;Zhang Yuxuan;Ding Yonghong;Yan Qiuyu;Zhou Chao(Huaide College,Changzhou University,Jingjiang 214500,China;Changzhou Vocational Institute of Textile and Garment,Changzhou 213000,China;Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学怀德学院,江苏靖江214500 [2]常州纺织服装职业技术学院,江苏常州213000 [3]常州大学,江苏常州213164

出　　处：《合成树脂及塑料》2024年第3期26-29,共4页China Synthetic Resin and Plastics

基　　金：江苏高校“青蓝工程”资助(SCZ2363220001)。

摘　　要：将多巴胺单体在纳米TiO_(2)粒子表面聚合,形成TiO_(2)-聚多巴胺(PDA)核壳结构,与硅胶(SR)共混制备了TiO_(2)-PDA/SR复合材料,并研究了其结构与性能。结果表明:使用多巴胺单体增加了TiO_(2)的分散性与相容性;PDA包覆的TiO_(2)粒子分散性明显提升,形成了较为清晰的核壳结构;PDA稳定且牢固地自聚在纳米TiO_(2)粒子外层,不易脱落;TiO_(2)-PDA/SR复合材料的起始分解温度从450.44℃提升到468.01℃,复合材料微观形貌呈海-岛结构。The dopamine monomers were polymerized on the surface of nano-titanium dioxide particles to form TiO_(2)-polydopamine(PDA)core-shell structure which was blended with silicon rubber(SR)to prepare TiO_(2)-PDA/SR composites,whose structure and properties were observed.The results show that the introduction of dopamine monomer increases the dispersion and compatibility of TiO_(2).The dispersion of TiO_(2)particle coated with PDA is significantly improved,a relatively clear core-shell structure is formed.PDA is stably and firmly self-polymerized on the outer layer of nano-TiO_(2)particle,which is not easy to fall off.The initial decomposition temperature of TiO_(2)-PDA/SR is increased from 450.44℃to 468.01℃,and the microstructure of the composites is sea-island structure.

关 键 词：二氧化钛 聚多巴胺 核壳结构 硅胶 复合材料 

分 类 号：TQ333.93[化学工程—橡胶工业]