凹凸棒石黏土超细粉制备与表面改性及其应用研究  

Study on Preparing Superfi ne Powder & Surface Modifi cation of Attapulgite & Its Application

作　　者：钱运华[1] 金叶玲[1] 陈静[1] 胡涛[1] 丁培兴[1] 

机构地区：[1]淮阴工学院化工系,江苏淮安223003

出　　处：《非金属矿》2007年第3期9-11,共3页Non-Metallic Mines

基　　金：江苏省科技攻关项目(编号:BE2004387);江苏省科技富民强县专项项目(编号:BE2006369)

摘　　要：以凹凸棒石黏土为原料,采用喷雾干燥法制得超细凹土粉体的最佳工艺条件是:浆料流量为0.6ml/min,进风量18m3/min,气流压力0.18MPa,浆料质量分数1.4%。用三种改性剂对超细凹土进行改性,并将改性后产品填充于橡胶中,通过改性预评价及填充橡胶的力学性能检测,得到硅烷KH-570的改性效果为最好,改性超细凹土可用作橡胶补强剂。Using attapulgite as raw material, best processing conditions of untrafine attapulgite powder preparing by spray drying were suggested as follows： slurry flow rate is 0.6 ml/min,air input is 18m^3/min, slurry density is 1.4%, Three kinds of modification agents were tested .The physical properties of modified artapulgite were measured with several different methods .The result showed that the best modifying agent was silane coupling agent KH-570. The modified superfine attapulgite can be the rubber reinlbrcing filler.

关 键 词：凹凸棒石黏土 超细粉体 表面改性 橡胶 

分 类 号：TQ172.44[化学工程—水泥工业]