Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (2): 1-5.doi: 10.3969/j.issn.1000-565X.2010.02.001

• Chemistry & Chemical Engineering •     Next Articles

Modification of Aluminum Pigments via Encapsulation with Polyacrylate and Silicon Dioxide

Gao Ai-huan  Pi Pi-hui  Lu Yang  Wen Xiu-fang  Cheng Jiang  Yang Zhuo-ru   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2009-03-27 Revised:2009-04-29 Online:2010-02-25 Published:2010-02-25
  • Contact: 程江（1965-），男，教授，博士生导师，主要从事精细化工研究．E-mail：cejcheng@scut．edu．cn E-mail:gfdoah@zqu．edu．cn
  • About author:高爱环（1976-），女，在职博士生，肇庆学院讲师，主要从事精细化工研究．
  • Supported by:

    国家自然科学基金资助项目（20976059）;广东省自然科学基金资助项目（07006528）

PDF

1022

Abstract:

In order to enhance the corrosion resistance and resin consistence of aluminum pigments, SiO2 and polyacrylate were used to encapsulate the pigments by means of the sol-gel method and the in-situ polymerization, respectively. Then, the mechanism of encapsulation was analyzed, and the surface morphology and structure of the encapsulated pigments were characterized by means of FT-IR, XPS and ESEM. Moreover, the influences of encap- sulating conditions on the properties of the coating films containing encapsulated aluminum pigments were investigated. The results show that, with a monomer dosage of 0. 7 g, the aluminum pigments encapsulated at 85 ℃ for 4 - 5 h is of significantly-improved dispersibility and adhesion, which enables the coating film to possess good appearance, high glossiness, and strong acid resistance.

Key words: aluminum pigment, polyacrylate, silicon dioxide, in-situ polymerization, encapsulation, adhesion