Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (8): 87-92.doi: 10.3969/j.issn.1000-565X.2011.08.016

• Chemistry,Chemical & Energy Engineering • Previous Articles     Next Articles

Preparation of Calcium Carbonate Composite Filler Coated with Titanium Dioxide and Its Application in Papermaking

Chen Gang  Liu Ya-ping  Fang Zhi-qiang   

  1. State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-03-07 Revised:2011-04-08 Online:2011-08-25 Published:2011-07-06
  • Contact: 陈港(1967-) ，男，教授，主要从事特种纸与功能纸制品研究． E-mail:papercg@ scut.edu.cn
  • About author:陈港(1967-) ，男，教授，主要从事特种纸与功能纸制品研究．
  • Supported by:

    广东省产学研项目( 2010B090400031) ; 国家"973”计划项目( 2010CB732206) ; 粤港关键领域重点突破项目( 2008A092000005)

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Abstract:

A new kind of composite filler was prepared by coating the carrier of calcium carbonate,with titanium dioxide via the mechanochemical method. Then,the structure of the composite filler was characterized by using such parameters as oil-absorbed values,hiding power and particle size and by means of FT-IR and SEM,and the properties of the composite filler and its effect on paper were then investigated. The results show that( 1) the particle size of the composite filler is larger than the uncoated calcium carbonate; ( 2) the chemical bonds form between calcium carbonate and titanium dioxide and is of a good strength; ( 3) the hiding power and the oil absorption values of the composite filler are close to those of titanium dioxide; and( 4) at the same ash content,the optical properties and the physical strength of the paper filling with the composite filler are close to those of the paper filling with titanium dioxide,thus the composite filler being able to partly or wholly replace titanium dioxide.

Key words: titanium dioxide, coating, calcium carbonate, composite filler, mechanochemistry

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