沉淀法白炭黑的制备及其填充SSBR/BR的研究  

Preparation of precipitated silica and its use as a filler with SSBR/BR

作　　者：缪烨 孔令汉 黄溪岱 王中英 朱红[1] MIAO Ye;KONG LingHan;HUANG XiDai;WANG ZhongYing;ZHU Hong(State Key Laboratory of Chemical Resource Engineering,Faculty of Science,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学理学院化工资源有效利用国家重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2019年第2期31-37,共7页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"973"计划(2015CB654703);塔里木大学和北京化工大学联合基金(ZZ1703)

摘　　要：以水玻璃为原料,采用柠檬酸和硫酸,在沉淀反应前和陈化阶段前添加乙醇制备白炭黑并应用于绿色轮胎橡胶中。通过透射电子显微镜(TEM)、比表面积分析法(BET)和动态光散射(DLS)等手段对白炭黑样品进行表征,结果显示:白炭黑的DBP吸油值为2.1 mL/g,BET比表面积达239 m^2/g,平均孔径为34.7 nm;白炭黑初始颗粒直径分布范围较窄,在10～19 nm之间呈正态分布,平均粒径15 nm,初级聚集体峰值150 nm左右,没有出现更大的聚集体尺寸。与商业化白炭黑Zeosil~?1165MP对比,制备的白炭黑填充SSBR/BR复合材料(silica-SSBR/BR)的正硫化时间t_(90)明显缩短,硫化速率变快;silica-SSBR/BR的拉伸强度和增强比均高于Zeosil~?1165MP-SSBR/BR;silica-SSBR/BR抗湿滑性能更优异,滚动阻力更低;silica-SSBR/BR和Zeosil~?1165MP-SSBR/BR的压缩生热相差不大。Silica for use in green tire rubber has been prepared from water glass using sulfuric acid and citric acid solutions.Ethanol was added before the precipitation and aging stage.The structure and morphology of the silica sample were characterized by TEM,BET,and DLS.The resulting silica had a DBP oil absorption value of 2.1 mL/g,a specific surface area of 239 m^2/g and average pore size of 34.7 nm.The primary particle diameter had a normal distribution and ranged from 10 to 19 nm,with an average primary particle diameter of 15 nm.The only primary aggregate size was 150 nm.Compared with commercially available silica Zeosil■1165 MP,the optimum curing time(t90) of SSBR/BR filled with the prepared silica(silica-SSBR/BR)was significantly shorter and the curing rate was faster.The tensile strength and reinforcing index(RI) of silica-SSBR/BR composites were higher,and the silica-SSBR/BR composites exhibited better wet skid resistance and lower rolling resistance than Zeosil■1165 MP-SSBR/BR.The values of the heat build-up of silica-SSBR/BR and Zeosil■1165 MP-SSBR/BR were nearly equal.

关 键 词：白炭黑 水玻璃 复合材料 橡胶 动态机械性能 

分 类 号：TQ127.2[化学工程—无机化工]