The rheological properties of plastisols prepared by different PVC resins were evaluated using a DV-79+ pro coaxial cylinder viscometer by steady shearing.The effect of resin characteristics on the rheological properties of PVC plastisols was investigated.The results indicated that the flow property of plastisols is determined by the preparation process,the particle size,and the distribution of resins.The dependence of viscosity on temperature was determined by the particle distribution of resins,and the result showed that the viscosity of plastisols prepared by resins with bimodal particle distribution is more sensitive to temperature than that of plastisols prepared by resins with unimodal particle distribution,the plastisols prepared by bimodal particle distribution resins prefers to gel.The viscosity of plastisols showed less dependence on shearing rate with the temperature increasing,and the plastiols showed a trend to change into Newtonian liquid.
