选用不同浓度乙酸镁对凹凸棒黏土进行改性处理,采用FT-IR、XRD和SEM进行了结构表征,测定了改性前后凹凸棒黏土的比表面积、组成和Zeta电位,考察了乙酸镁浓度对凹凸棒黏土在自来水和饱和氯化钠盐水中黏度的影响.结果表明,在乙酸镁浓度为10%时,改性凹凸棒黏土表现出最高的黏度,乙酸镁与棒晶间的离子交换作用是黏度提高的主要因素.
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