Aggregation behavior of fine powder of Carbide ceramics in aqueous suspension

Abstract

To analyze the effect of molecular structure of polymer dispersant on aggregation behavior of fine powder in SiC or TiC dense suspension, some kinds of polymer dispersant, which had different hydrophilic to hydrophobic group ratio, were synthesized from acrylic acid and stylene or methyl acrylate monomer. The optimum hydrophilic group ratio to hydrophobic group, m:n, in polymer dispersant to obtain the minimum suspension viscosity depended on the structure of hydrophobic group. For example, in the case of acrylic acid/stylene copolymer, the optimum ratio was 50:50, on the contrary, in the case of acrylic acid/methyl acrylate copolymer, the suspension viscosity decreased with increase of hydrophobic group ratio.