采用高压均质技术对凹凸棒黏土进行焦磷酸钠改性,考察了高压均质压力和焦磷酸钠浓度对改性凹凸棒黏土黏度的影响.同时采用FTIR、XRD和SEM进行了结构表征,测定了改性前后凹凸棒黏土的BET比表面积、组成和Zeta电位.结果表明,高压均质过程可显著影响焦磷酸钠改性凹凸棒黏土的理化性能.在焦磷酸钠质量百分比为0.5％和高压均质压力为20 MPa的条件下,改性凹凸棒黏土有最高的黏度,与未高压均质样品相比,黏度提高了38％.
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