湿法混合制备天然橡胶/二氧化硅复合材料的结构与性能  

Structure and properties of natural rubber/silica composite based on latex/filler wet mixing

作　　者：张以增[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高分子系,广东广州510641

出　　处：《弹性体》2015年第4期6-11,64,共7页China Elastomerics

基　　金：国家自然科学基金项目(59773010);华南理工大学SRP项目

摘　　要：以天然胶乳、沉淀二氧化硅及硅溶胶为原料,分别采用胶乳-沉淀二氧化硅共沉法和胶乳-硅溶胶共沉法2种湿法混合工艺,制备了两类天然橡胶/二氧化硅湿法混合复合材料[P(NR/SiO2)和C(NR/SiO2)],并与采用传统干法混炼制备的天然橡胶/沉淀法二氧化硅复合材料(NR/SiO2)进行比较,研究了制备工艺、填料用量、硅烷偶联剂等参数对P(NR/SiO2)、C(NR/SiO2)和NR/SiO2的填料分散和物理机械性能的影响。结果表明,相比于胶乳-沉淀二氧化硅共沉法,采用胶乳-硅溶胶共沉法制备的C(NR/SiO2)具有更好的填料分散和综合物理性能,是制备高性能天然橡胶/二氧化硅纳米复合材料的合适方法。Two types of natural rubber/silica composite,C（NR/SiO2）and P（NR/SiO2）,based on two kinds of latex/filler mixing technology,i.e.,latex/silica sol coagulation method and latex/precipitated silica coagulation method,were prepared and were compared with the traditional dry mixing product（NR/SiO2）,in which the effect of preparation technologies,filler contents and silane coupling agents on the filler dispersion and mechanical properties were studied.It＇s found that the dispersion of silica in rubber matrix and the mechanical properties of C（NR/SiO2）is better than that of P（NR/SiO2）and NR/SiO2,which showed that the method of rubber latex/silica sol coagulation is a proper method that can improve the dispersion of silica in rubber matrix.

关 键 词：天然橡胶/二氧化硅复合材料 湿法混合 硅溶胶 

分 类 号：TQ332[化学工程—橡胶工业]