纳米碳酸钙的表面改性及其填充107硅橡胶复合材料的性能研究  

Surface Modification of Nano Calcium Carbonate and Property of Filled 107 Silicone Rubber

作　　者：丁浩[1] 邹华[1] 王天强 张立群[1] DING Hao;ZOU Hua;WANG Tianqiang;ZHANG Liqun(Beijing University of Chemieal Technology,Beijing 100029,China;Chengdu Guibao Science and Technology Co.,Ltd,Chengdu 610041,China)

机构地区：[1]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029 [2]成都硅宝科技股份有限公司,四川成都610041

出　　处：《橡胶科技》2018年第11期11-16,共6页Rubber Science and Technology

摘　　要：采用硬脂酸对纳米碳酸钙进行湿法表面改性,探讨改性机理,研究107硅橡胶/改性纳米碳酸钙复合材料的性能。结果表明:硬脂酸对纳米碳酸钙表面改性的效果较好,硬脂酸主要通过化学吸附改性纳米碳酸钙;随着硬脂酸用量增大,纳米碳酸钙的活化度增大,在107硅橡胶中的分散性提高;107硅橡胶/改性纳米碳酸钙复合材料Payne效应减弱,拉伸强度、拉断伸长率和撕裂强度增大。In this study,nano-CaCO3 was modified by stearic acid via wet surface modification process, the modification mechanism was discussed,and the properties of 107 silicone rubber/modified nano-CaCO3 composites were investigated.The results showed that the modification process was mainly chemical adsorption of stearic acid onto the surface of nano-CaCO3 and the modification effect of stearic acid was good.It was found that with the increase of the amount of stearic acid,the activation degree of nano-CaCO3 increased,its dispersion in the silicone rubber was improved,Payne effect of the composites was reduced,and the tensile strength,tensile elongation at break and tear strength increased.

关 键 词：纳米碳酸钙 硅橡胶 表面改性 复合材料 分散性 PAYNE效应 物理性能 

分 类 号：TQ333.93[化学工程—橡胶工业] TQ330.383