苯乙烯-马来酸酐共聚物表面改性SiC浆料的流变性研究  

Study on the Rheological Behavior of Modified SiC Slurry with Styrene and Maleic Anhydride Copolymers

作　　者：吉晓莉[1] 魏磊[1] 郝惠[1] 郑彩华[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070

出　　处：《现代技术陶瓷》2008年第1期7-10,共4页Advanced Ceramics

摘　　要：利通过自由基聚合反应,合成了含有苯乙烯-马来酸酐共聚物的改性剂。通过表面改性将上述改性剂接枝在粉体表面,研究了不同因素对改性SiC浆料流变特性的影响。结果表明,表面改性使SiC浆料的粘度显著降低,且浆料呈现出近似Newton流体行为。通过控制影响改性SiC浆料流变性的因素,在改性剂中WD-20与SMA配比为1∶1,改性剂用量质量分数为1%,pH=9,加入分散剂TMAH的质量分数为0.6%的条件下,成功地制备出了固相体积分数为58%,粘度低于1Pa·s的SiC陶瓷浆料。Modified coupling agent with styrene and maleic anhydride copolymers was synthesized by radical copolymerization. It was coated on the surface of SiC powders. The rheological behavior of modified SiC powders, was studied. The results showed that the modified SiC slurry was characterized by Newton behavior and the viscosity was very low. By controlling the factors effecting the rheological behavior, modified SiC slurry was prepared with solid loading of 58vo1% and low viscosity（less than 1 Pa · s） when the proportion of WD-20 to SMA is 1： 1, the content of modified agent is 1wt%, the pH value is 9 and the content of dispersant TMAH is O. 6wt%.

关 键 词：碳化硅 表面改性 流变性 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TQ174.613