聚己内酯型超分散剂对磁浆流变行为和分散效果的影响

Effect of Poly-ε-caprolactone Hyperdispersants on the Rheological Behavior and Dispersion Stability of Magnetic Dispersion

研究了磁性悬浮体（磁浆）的流变行为和分散稳定性．在磁浆中加人聚己内酯型超分散剂可显著降低体系的剪切粘度，提高分散体的稳定性．超分散剂的分散效果与溶剂化链分子量和锚固基团种类密切相关．当溶剂化链分子量为700、锚固基团为氨基和按基混合物、分子结构为“流状”时，超分散剂的分散效果最佳．

The rheological behavior and dispersion stability of magnetic powder suspensionwere studied.With the aid of hyperdispersants having poly (ε-caprolactone) as solvatablechian, the viscosity of the suspension was lowered and the dispersion stability was improvedobviously. The effect of the hyperdispersants was the result of both the type of the anchor-ing group and the molecular weight of the solvable chain. When the molecular weight of thesolvatable chain is 700 and the anchoring group is the mixture of carboxyl and tertiaryamine, the hyperdispersant, has the best effectiveness.