嵌段共聚物PAN-b-PZDMA对纳米氮化硅的表面改性研究  

Study on the surface modification of nano-sized Si_3N_4 by the block copolymer PAN-b-PZDMA

作　　者：方炳虎 陈晋阳 许耀东 夏茹[2,3] 钱家盛[2,3] 陈鹏[2,3] 苗继斌[2,3] 杨斌[2,3] 

机构地区：[1]安徽中鼎密封件股份有限公司,安徽宁国242300 [2]安徽省高性能橡胶材料及制品重点实验室,安徽宁国242300 [3]安徽大学化学化工学院,安徽合肥230601

出　　处：《应用化工》2016年第9期1657-1661,共5页Applied Chemical Industry

基　　金：国家自然科学基金项目(51273001;51403001);安徽省人事厅宁国中鼎密封件股份有限公司博士后工作站基金资助

摘　　要：利用具有不同嵌段比的共聚物PAN-b-PZDMA对纳米氮化硅进行表面改性,探究了纳米氮化硅预处理条件。结果表明,纳米氮化硅160℃下恒温干燥2 h,表面预处理效果最好。在85℃,采用PAN138-b-PZDMA5的偶联剂(9%)改性后的纳米氮化硅疏水性增加,与水的接触角由11.6°提高到51.9°,在乙酸乙酯中分散性良好,无明显团聚。A series of block copolymer PAN-b-PZDMA with different viscosity-averaged molecular weight were used to modify the nano-sized Si3N4 particles and the surface modification condition was discussed in detail. The results showed that after drying for 2 h at 160 ℃,silicon nitride nanoparticles owned the best modification condition. The stability and dispersion of nano-Si3N4 modified by PAN138-b-PZDMA5（ 9%）was the best in ethyl acetate. The hydrophobic property of modified nano-Si3N4 was improved greatly and the contact angle of water increased from 11. 6° to 51. 9°.

关 键 词：表面改性 嵌段共聚物 偶联剂 纳米氮化硅 

分 类 号：TQ127.2[化学工程—无机化工]