Dispersion of silicon carbide in poly alpha olefins-6 and trimethylopropane trioleate

作者：Shang, Xujing; Zhu, Yumei^*; Li, Zhihong

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2016, 509: 244-251.

DOI：10.1016/j.colsurfa.2016.09.003

• Dispersion stability
• Silicon carbide
• Hyperdispersant
• Base oil
• Steric stabilization

In this paper, the dispersion behavior and interactions among SiC particles, dispersant and solvent were investigated. A hyperdispersant (Tech-5080) was adopted to study the stability mechanism in poly alpha olefins-6 (PAO6)/trimethylopropane trioleate (TMPTO) solvent system. Optical microscope and SEM images were used to assess the degree of dispersion. FT-IR analysis results showed that the dispersant were adsorbed onto the particle surface by hydrogen bonding. The stability measurements were studied by Turbiscan Lab(expert) and the size distribution was examined by Zetasizer Nano ZS to evaluate the effect of dispersant content on the stabilization of SiC suspension. A model was illustrated to explain the changing process of SiC particles in the solvent, which brings new insight into the dispersion phenomenon. Results showed that well dispersed SiC slurry could be developed with 50 vol% PAO6 as solvent and using 0.5 wt% Tech-5080 as the dispersant.

• 出版日期2016-11-20
• 单位天津大学