Study on the Surface Modification of Nanometer Calcium Carbonate

Ze Hong Wang; Jing Hua Chen; Wan Zhong Yin; Yue Xin Han

doi:10.4028/www.scientific.net/AMR.92.229

Paper Titles

Relationship of Particle Content and Size of Spherical Silica with the Flowability of Epoxy Molding Compounds for Large-Scale Integrated Circuits Packaging
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Research of Improving Water Injection Effect by Using Active SiO₂ Nano-Powder in the Low-Permeability Oilfield
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Research on Fuxin Plant Coal Ash as a Fluoride-Containing Wastewater and Mechanism of Fluoride Removal
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Study on Size Distribution of the Copper and Nickel Ore
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Study on the Surface Modification of Nanometer Calcium Carbonate
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Study on the Synthesis of High Quality Nanometer Calcium Carbonate Using Ultrasonic Technology
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Study of Mechanical Properties of Magnesium Oxysulfate Whisker/ABS Composites
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Study on Process and Mecahnism for Preparation of Magnesium Hydroxide Whiskers
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Synthesis and Adsorption Property of Mesoporous Molecular Sieve MCM-41 from Iron Ore Tailings
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 92Study on the Surface Modification of Nanometer...

Study on the Surface Modification of Nanometer Calcium Carbonate

Abstract:

Titanate coupling agents KR-TTS is used to modify nanometer calcium carbonate and the modified powder is characterized. The modification mechanisms of nanometer calcium carbonate is also investigated in this paper. Experiment results show that the optimum conditions of dry modification method as follows: the dosage of KR-TTS titanate coupling agents is 2%, mass ratio of KR-TTS titanate coupling agents to liquid organic solvent is 1:1, modification temperature is 70°C, modification time is 20 minutes, stirring rate is 650rpm. Under the optimum conditions, activity index of modified nanometer calcium carbonate is 100%. The activity index Measurement indicates that modified nanometer calcium carbonate become hydrophobic instead of hydrophilic. IR analysis shows that chemical bonds are formed between titanate coupling agents and nanometer calcium carbonate particles.