| Study on the Rheology of Acetic Acid Modified SiC Powder
and Pastes Reinforced by Solvothermal Method |
Jinhai Bai,a, b Licen Song,a, * Fanmin Meng,a Shinan Bi,c Tianxing Cong,a. b Chunhong Zhangb
and Lijia Liub
Pages: 118-125
DOI : 10.1080/0371750X.2024.2328236 |
| Abstract |
| This paper investigates a straightforward method of powder surface modification to
increase the efficiency of acetic acid small molecules adhering to the surface of SiC
powder. This method involves pretreating the SiC powder with diluted sulfurcontaining
solutions and enhancing the reaction between acetic acid and silica
hydroxyl groups on the surface of SiC powder in a closed solvothermal environment.
X-ray photoelectron spectroscopy analysis showed that acetic acid formed chemical
bond with SiC surface silicon hydroxyl groups under the action of sulfur-containing
catalyst and solvothermal method; thermogravimetric analysis results showed that
acetic acid formed stable adsorption on the SiC powder surface. The modified
powder’s zeta potential value reached 60.8 mV at pH=10.8, and the dispersion stability
was significantly improved. Compared with the original powder, the viscosity of the
slurry formulated with the modified powder was less than 60 mPa.s at 47 vol% solid
content, and the rheological properties of the slurry were improved.
[Keywords: Solvothermal, Sulfur-containing catalyst, SiC powder, Acetic acid, Rheology] |
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