Journal of Northeastern University(Natural Science)

Journal of Northeastern University Natural Science ›› 2014, Vol. 35 ›› Issue (12): 1783-1786.DOI: 10.12068/j.issn.1005-3026.2014.12.025

• Resources & Civil Engineering • Previous Articles     Next Articles

Surface Modification of Nesquehonite Whiskers with Stearic Acid

WANG Yu-lian1， YIN Wan-zhong1， WANG Lei2， YAO Jin1   

  1. 1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2. Mining， Metallurgy & Materials Research Institute， General Research Institute for Nonferrous Metals， Beijing 100088， China.
  • Received:2013-11-26 Revised:2013-11-26 Online:2014-12-15 Published:2014-09-12
  • Contact: WANG Yu-lian
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Abstract: Surface modification of the nesquehonite whiskers with stearic acid was studied， surface modification effect of stearic acid dosage， slurry concentration and modification time was investigated on the nesquehonite whiskers. Modified nesquehonite whiskers were characterized with contact angle， activation index， SEM， TG-DSC and FTIR. The results indicated that the best process condition was modifier dosage of 5%， slurry concentration of 5% and modification time of 60min. Under the optimum condition， contact angle of modified product is 130° and activation index is 1.000. There is no distinct effect of surface modification on the thermal decomposition of nesquehonite whiskers. The interlinkage between the stearic acid and nesquehonite whiskers is mainly caused by hydrophobic magnesium stearate films formed by magnesium ions and carboxyl groups.

Key words: nesquehonite； whiskers, stearic acid, surface modification

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