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2019•China CeramicsRequires access

Study on Surface Modification of SiC Powder by Sodium Glycine and its Rheological Properties

Gao Xiaoying, Ruiyu Wang, Ming Yang, Hulin Zhang, Yuan Gao, Dongying Kenli District Quality, Technical Supervision Bureau

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Abstract

The strong electrolyte sodium glycine was used as a modifier to study the adsorption on the surface of SiC powder. The high-dispersion SiC powder was prepared and the rheology of slurry was studied. The results show that the absolute value of zeta potential of SiC powder modified by 0.15% sodium glycine is higher than that before modification, increasing from 38.9 mV to 62.2 mV. The TOC(total organic carbon)test on the organic matter content in the powder washing solution shows that the balanced adsorption of sodium glycine can effectively reduce the viscosity of SiC slurry and improve its solid content and stability.

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What this paper is about

The strong electrolyte sodium glycine was used as a modifier to study the adsorption on the surface of SiC powder. The high-dispersion SiC powder was prepared and the rheology of slurry was studied. The results show that the absolute value of zeta potential of SiC powder modified by 0.15% sodium glycine is higher than that before modification, increasing from 38.9 mV to 62.2 mV. The TOC(total organic carbon)test on the organic matter content in the powder washing solution shows that the balanced adsorption of sodium glycine can effectively reduce the viscosity of SiC slurry and improve its solid content and stability.

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Available abstract

The strong electrolyte sodium glycine was used as a modifier to study the adsorption on the surface of SiC powder. The high-dispersion SiC powder was prepared and the rheology of slurry was studied. The results show that the absolute value of zeta potential of SiC powder modified by 0.15% sodium glycine is higher than that before modification, increasing from 38.9 mV to 62.2 mV. The TOC(total organic carbon)test on the organic matter content in the powder washing solution shows that the balanced adsorption of sodium glycine can effectively reduce the viscosity of SiC slurry and improve its solid content and stability.

Key concepts: Zeta potential, Rheology, Adsorption, Materials science, Viscosity, Surface modification, Dispersion (optics), Electrolyte

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