Influence of Composite Modifier on the Modification of Calcium Carbonate Powder

Abstract:

The modification of CaCO₃ powder was studied by the composite modifier in n-butanol and water solution. Aluminate coupling agent (ACA) and stearic acid (SA) were added as the composite modifier. The characters of modified CaCO₃ were investigated by the contact angles and infrared spectroscopy (IR). It was found that the contact angles/water of modified CaCO₃ powder increased with the increase of SA/ACA weight ratio, and showed a maximum when ratio was 0.8:1. The contact angles/water of modified CaCO₃ powder obtained in optimum conditions was 136.5°. The results indicated that the surface character of CaCO₃ powder exhibited hydrophobic properties. When adding the active CaCO₃ into PE (the weight ratio of CaCO₃/PE about (20:100), the mechanical properties of PE were remarkably improved.

• Periodical: Advanced Materials Research (Volume 744)
• Pages: 297-300
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.744.297
• Online since: August 2013
• Authors: Zhang Yue, Mei Yan Yu, Lang Chen Li
• Keywords: Calcium Carbonate, Composite Material, Modification, Surface Characteristics

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