首先将绢云母用偶联剂KH570进行包覆处理,然后利用超声波的辅助乳化作用,乳液聚合法制备了绢云母/聚苯乙烯（PS）复合粒子。采用正交实验法研究KH570包覆绢云母的优选工艺条件,并对复合粒子的微观结构进行了表征。结果表明,在超声时间为0.5 h,m（绢云母）∶m（KH570）为100∶10,反应温度为60℃,反应时间为4 h的条件下,KH570对绢云母的包覆率较高;红外光谱（FT-IR）和热重分析（TG）结果表明,聚苯乙烯与绢云母间形成化学键合;扫描电镜（SEM）照片显示,聚苯乙烯在绢云母表面形成粒径约为200 nm的微粒。
Sericite was modified with coupling agent KH570 under ultrasonic radiation,then sericite/PS composite particles were prepared by emulsion polymerization assisted by ultrasonic radiation,and optimal process of sericite coating by KH570 by orthogonal experimental method was studied.Microstructure of the composite particles was characterized.The results show that the optimal modification can be achieved according to the following conditions： the ultrasonic time is 0.5h,the mass ratio of sericite/KH570 is 100/10,the reaction temperature is 60 ℃ and the reaction time is 4h.The results of Fourier transform infrared spectrum（FT-IR） and thermogravimetry（TG） curves indicate that the polystyrene is linked with sericite via chemical bonds.Scanning electron microscope（SEM） images show that polystyrene micro-particles with diameter about 200nm formed on the sericite surface.
参考文献
| [1] | 薛茹君,吴玉程.硅烷偶联剂修饰改性的机理及改性绢云母的性能[J].硅酸盐学报,2007(03):373-376. |
| [2] | GAO Huimin,YUAN Jizu,WANG Xiangrong,GUAN Junfang,ZHANG Lingyan,JING Zhengqiang,MAO Yilin.Mechanism of Surface Modification for Sericite[J].武汉理工大学学报（材料科学版）（英文版）,2007(03):470-472. |
| [3] | Teofil Jesionowski;Andrzej Krysztafkiewicz .Silicas modified with silane pro-adhesive compounds-active fillers of rubbers[J].Composite interfaces,2001(3/4):221-225. |
| [4] | 范力仁,董晓娜,郑梯和.超细绢云母/加成型液体硅橡胶复合材料的制备及性能[J].复合材料学报,2008(04):90-95. |
| [5] | 宋秋生,费彬,闫溥,张玉虎,钟振彪.核壳型绢云母/PMMA复合材料的制备与表征[J].非金属矿,2010(01):33-35. |
| [6] | Zalkind OA;Gershenkop AS .IR spectral determination of mica in multicomponent systems[J].Journal of analytical chemistry,2006(7):644-646. |
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