凝聚共沉法改性高岭土/NR复合材料的性能研究  

Preparation and properties of modified kaolinite/NR composite

作　　者：王芳[1] 王炼石[1] 赵治国[1] 张安强[1] 周奕雨[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》2005年第4期197-200,共4页China Rubber Industry

摘　　要：以浓缩NR胶乳为主体材料,改性高岭土为填料,用凝聚共沉法制备改性高岭土/NR复合材料,研究影响复合材料物理性能的因素,并对材料拉伸断裂面的形貌进行扫描电镜分析。结果表明,改性高岭土/NR复合材料具有优良的物理性能,且在拉伸过程中无应力发白现象;在改性剂乳酸钾溶液质量分数为0 05、高岭土改性温度为80℃以及改性高岭土用量为40份的条件下,制得的改性高岭土/NR复合材料物理性能最佳。A modified kaolinite/NR composite was prepared by coacervation-coprecipitation of concentrated NR latex with modified kaolinite and the influence of the preparation conditions on the mechanical properties of vulcanizate was investigated.Moreover,the tensile sectional morphology of vulcanizate was analyzed by SEM.The results showed that the modified kaolinite/NR composite possesed excellent physical properties and the modified kaolinite particles adhered tightly to NR matrix during tensile;and a modified kaolinite/NR composite with the optimal physical properties was obtained when the content of the potassium lactate solution modifier was 0.05,the kaolinite was modified at 80 ℃ and 40 phr modified kaolinite was used in the composite.

关 键 词：改性高岭土 NR胶乳 凝聚共沉 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]