Paper Title:
Preparation of Composite Ground Calcium Carbonate in Ca(OH)2–H2O–CO2 System and Characterization
  Abstract

Ground calcium carbonate (GCC) is usually of smooth/flat surface and pointed edges angles which have disadvantageous effects on the mechanical properties of composite polymer materials filled with the powder. Nanometer calcium carbonate reactants would deposit, nucleate and grow on surface of ground calcium carbonate with micron grain size by adjusting suitable technical parameters in Ca(OH)2–H2O–CO2 system. Compared with the uncoated powder, composite ground calcium carbonate (CGCC) is of rough surface, blunt edges, larger specific surface area, larger in whiteness. In this paper, we reported the successful preparation of CGCC particles, and found GCC/Ca(OH)2 weight ratio was the key parameter. Some technological parameters were mainly analyzed for the coating process. Furthermore, We also prepared nanosized calcium carbonate coating GCC at higher temperature (40 °C) using additives. Filling tests showed that a rough surface of the CGCC enhanced contact opportunities and improved the interface between polymer and CGCC blended with polypropylene (PP).

  Info
Periodical
Advanced Materials Research (Volumes 287-290)
Chapter
New Functional Materials
Edited by
Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li
Pages
548-552
DOI
10.4028/www.scientific.net/AMR.287-290.548
Citation
C. Huo, J. Y. Shen, Q. H. Xia, "Preparation of Composite Ground Calcium Carbonate in Ca(OH)2–H2O–CO2 System and Characterization", Advanced Materials Research, Vols. 287-290, pp. 548-552, 2011
Online since
July 2011
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Price
$32.00
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