摘要
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。
The attapulgite was modified by different concentration of magnesium acetate solutions. The effect of modification on the micro-structure and physico-chemical properties of attapulgite was revealed by infrared spectroscopy （FT-IR）, X-ray diffraction （XRD）, scanning electronic microscope （ SEM）, BET specific area, chemical composition and Zeta potentials analyses. The effect of the concentration of magnesium acetate on the viscosity of attapulgite suspension in distilled water and saturated NaCI solution was studied. The results indicated that the modified attapulgite exhibits the best viscosity in both distilled water and saturated NaCl solution with magnesium acetate concentration of 10% and the ion-exchange between magnesium acetate with attapulgite is the main factor to improve the viscosity.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2012年第3期516-520,共5页
Bulletin of the Chinese Ceramic Society
基金
江苏省重大创新载体建设项目资助(BY2010012)
关键词
凹凸棒黏土
乙酸镁
黏度
微结构
attapulgite clay
magnesium acetate
viscosity
micro-structure
