The profile of segment density distribution was numerically analyzed by means of the Newdon-Raphson iteration method. The conformation of polymer chains adsorbed on the surface of particle was theoretically studied, the effects of molecular weight of polymer, the density of charged group in polymer chains and the interaction coefficients between polymer segment and solvent molecule and between polymer and particle surface were also theoretically investigated. The carbon black dispersion system with polyacrylamide (PAM) or cationic polyacrylamide (CPAM) as dispersant was adopted to verify the model.%用Newdon-Raphson迭代法对链节密度分布模型进行数值分析，从理论上探讨了聚合物分子链在粒子表面的构象状况，聚合物分子量、分子链电荷密度、聚合物和溶剂的相互作用参数及聚合物和粒子表面相互作用参数等因素对分子链在粒子表面的吸附行为和吸附有聚合物的粒子间的相互作用的影响，并通过聚丙烯酰胺(PAM)和阳离子聚丙烯酰胺(CPAM)在炭黑表面的吸附验证了所建立的模型.
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