羧酸盐型CDA水性高分子/SiO_(2)纳米复合乳液的制备及性能  

Preparation and Properties of Carboxylate CDA Waterborne Polymer/SiO_(2)Nano-Composite Emulsion

作　　者：张婧 王莹[1] 鲍艳[2] ZHANG Jing;WANG Ying;BAO Yan(Xianyang Vocational and Technical College,Xianyang Shaanxi 712000,China;College of Bioresources and Chemical and Materials Engineering,Shaanxi University of Science and Technology,Xi’an Shaanxi 710021,China)

机构地区：[1]咸阳职业技术学院,陕西咸阳712000 [2]陕西科技大学轻工科学与技术学院,陕西西安710021

出　　处：《当代化工》2024年第6期1291-1299,共9页Contemporary Chemical Industry

基　　金：陕西省教育厅一般项目(项目编号:23JK0720)。

摘　　要：以DMBA为亲水剂,并引入纳米SiO_(2)提升乳液涂膜综合性能,制备WCCDA/SiO_(2)纳米复合乳液,并分析研究了纳米SiO_(2)的作用机理。结果表明:WCCDA/SiO_(2)纳米复合乳液的最佳合成工艺为纳米SiO_(2)粒径8 nm、纳米SiO_(2)质量分数1.00%、CDA质量分数27.0%。WCCDA/SiO_(2)纳米复合乳液涂膜表面致密光滑,柔韧性、附着力、耐水性、耐黄变性、机械性能和热稳定性良好。WCCDA/SiO_(2)纳米复合乳液成膜时,在涂膜表面形成许多细小的“凸起”,产生荷叶效应,提高涂膜耐水、耐介质及耐黄变等性能。WCCDA/SiO_(2)nano-composite emulsion was prepared by using DMBA as a hydrophilic agent,Nano-SiO_(2)was introduced into the system to improve the comprehensive performance of emulsion coating,and the interaction mechanism of nano-SiO_(2)was studied.The results showed that the optimal process of WCCDA/SiO_(2)nano-composite emulsion was as follows:mass fraction 1.00%of nano-SiO_(2)(8 nm),mass fraction 27.0%of CDA.The coating surface was compact and smooth,and the flexibility,adhesion,water resistance,yellowing degeneration resistance,mechanical properties and thermal stability were excellent.When WSCDA/SiO_(2)nano-composite emulsion film was formed,many small'mastoids'were formed on the surface of the coating film,resulting in lotus leaf effect,improving the water resistance,medium resistance and yellowing resistance of the coating film.

关 键 词：醋酸纤维素 纳米粒子 复合材料 羧酸盐 二氧化硅 

分 类 号：TQ050.4[化学工程]