凝聚共沉法稀土掺杂高岭土/天然橡胶复合材料的性能研究  

Properties of Rare Earth Doped Kaolinite/NR Composite Prepared by Coagulation Method

作　　者：陈巧[1] 王芳[1] 曹秀华[1] 王炼石[1] 张安强[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640

出　　处：《橡胶工业》2012年第6期325-330,共6页China Rubber Industry

摘　　要：研究凝聚共沉法稀土掺杂高岭土/天然橡胶(NR)复合材料的性能,并与粉体高岭土/块状NR机械混炼硫化胶进行对比。结果表明:稀土掺杂高岭土在NR基体中具有良好的分散性,二者构成的界面结合牢固;与粉体高岭土/块状NR机械混炼硫化胶相比,凝聚共沉法稀土掺杂高岭土/NR硫化胶的拉伸强度、拉断伸长率和撕裂强度有较大提高;与镧和钐相比,镨化合物对高岭土的掺杂改性效果更明显。The properties of rare earth doped kaolinite/NR composite prepared by coagulation method were studied,and compared with those of powder kaolinite/bulk NR compounds prepared by traditional mechanical mixing method. The results showed that, rare earth doped kaolinite was well dispersed in the NR matrix,and the interracial adhesion between NR matrix and rare earth doped kao- linite particles was good. The tensile strength, elongation at break and tear strength of rare earth doped kaolinite/NR composite were improved obviously compared with those of powder kaolinite/bulk NR compounds. The modification of kaolinite by Pr compound was better than that by La and Sin.

关 键 词：稀土化合物 高岭土 改性 天然胶乳 复合材料 凝聚共沉法 

分 类 号：TB332[一般工业技术—材料科学与工程]