화학공학소재연구정보센터
KAGAKU KOGAKU RONBUNSHU, Vol.38, No.6, 365-371, 2012
Effect of a Dispersion Aid on Dry Dispersion of Submicron Particulate Agglomerates
The effect of a liquid dispersion aid on dry dispersion of submicron nickel powder was investigated. Measurements of test powder with and without added diethylene glycol monomethyl ether (DEG) revealed that addition of DEG improved the dispersability of nickel powder by a factor of about three. Observation of the structure of nickel powder indicated that the improvement is due to a change from compact agglomerates to chain-like agglomerates upon admixture of DEG. Since the dispersability of DEG-mixed nickel powder was unchanged after drying, the improvement may result from a reduction in coordination number between particles, rather than a decrease in bridging or adhesion force between particles.