纺织学报 ›› 2007, Vol. 28 ›› Issue (1): 63-67.

• 染整与化学品 • 上一篇    下一篇

纳米CaCO3在水中的分散

葛明桥;梁文玉;李永贵   

  1. 江南大学纺织服装学院 江苏无锡214122
  • 收稿日期:2006-04-25 修回日期:2006-07-04 出版日期:2007-01-15 发布日期:2007-01-15

Dispersion of nano-sized CaCO3 in water

GE Mingqiao;LIANG Wenyu;LI Yonggui   

  1. School of Textile and Garment;Southern Yangtze University;Wuxi;Jiangsu 214122;China
  • Received:2006-04-25 Revised:2006-07-04 Online:2007-01-15 Published:2007-01-15

摘要: 选择水为分散介质,通过添加分散剂和超声波的作用对纳米CaCO3进行分散。测试分散体系的透光率、zeta电位和体系中纳米CaCO3粒子的粒径以表征分散效果。通过对六偏磷酸钠(SHMP)、多聚磷酸钠(SPP)和十二烷基苯磺酸钠(SDBS)3种分散剂的分散效果比较,证明SDBS能提高纳米CaCO3在水中分散性,是一种较合适的分散剂。探讨了分散剂用量、分散体系pH值和超声波作用时间对分散效果的影响。当SDBS用量为0.14%,pH值为8.5,超声波作用时间为5 min时,纳米CaCO3在水中的分散效果较好。

Abstract: Water was chosen as disperse medium and nano-sized CaCO3 was dispersed through adding dispersants and ultrasonic treatment.The dispersion state was indicated through testing the transmittance and zeta potential of the dispersion and particle size of nano-sized CaCO3.By comparing the dispersion states when sodium hexametaphosphate(SHMP),sodium polyphosphate(SPP),sodium dodecylbenzenesulfate(SDBS) were used as dispersants respectively,SDBS was proved to be the best for dispersion of nano-sized CaCO3in water.The influence of the amount of dispersant,pH value and the time of ultrasonic treatment on the dispersion state was discussed.The optimum dispersion state might be achieved when the amount of SDBS was 0.14% with pH=8.5 and ultrasonic treatment for 5 minutes.

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