氰酸酯树脂/多步接枝二氧化钛复合材料的制备  

Preparation of CE/multi-grafting TiO_2 composites

作　　者：王君龙[1] 

机构地区：[1]渭南师范学院复合材料研究所,西部军民融合技术产业发展研究院,陕西省渭南市714000

出　　处：《合成树脂及塑料》2016年第2期39-42,66,共5页China Synthetic Resin and Plastics

基　　金：陕西省科技厅工业攻关课题(2013K09-31);陕西省教育厅专项基金(15JK1266);西部军民融合技术产业发展研究院项目(15JMR17)

摘　　要：采用多步接枝工艺,对纳米TiO_2进行表面改性,制备了M系列纳米TiO_2粒子,并制备了氰酸酯树脂(CE)/M系列纳米TiO_2粒子复合材料。研究了复合材料的摩擦性能、固化性能,分析了微观形貌与性能变化之间的关联,考察了复合材料黏度对固化工艺的影响,初步得出复合材料微观形貌与性能演变之间的规律,以及复合材料性能得以改善的微观机理。结果表明:引入少量M系列TiO_2粒子(质量分数≤4%),可改善CE的固化性能及摩擦性能。表面二次乳液接枝聚甲基丙烯酸甲酯的纳米TiO_2质量分数为4%时,复合材料摩擦因数降低约43.5%,摩擦损耗降低68.1%,耐磨性能提高。The titanium dioxide particles surface is modified to prepare Mseries nano TiO_2 particles through a multi-step grafting process and to prepare the cyanate ester（CE）/M series composites. The curing and friction of the composites are researched along with the impact of viscosity on its curing process. The laws between microstructure and performance of the composite are summed up as well as its microscopic mechanism to improve its performance by analyzing the correlation between performance and microstructure of the composite. The results indicate that the curing and friction of CE are improved by incorporating M series TiO_2 particles（mass fraction ≤ 4%） into the composites. When the content of TiO_2 particles in polymethyl methacrylate（PMMA） prepared by surface emulsion secondary grafting is 4%, the friction factor and loss of the composite drop by 43.5% and 68.1% respectively, which improve the wear resistance of the material.

关 键 词：氰酸酯树脂 复合材料 二氧化钛 制备 摩擦性能 

分 类 号：TB33[一般工业技术—材料科学与工程]