Prediction and optimization of the particle characteristics of PVC manufactured by in-situ polymerization of nano-CaCO_3 in 30 m~3 polymerizers
Pan Hai-tian · Polyvinyl Chloride · 2010
Nano-CaCO3 in-situ polymerization PVC resin(nano-PVC resin) was manufactured by in-situ polymerization of vinyl chloride with nano-CaCO3 which was well dispersed by microemulsion dispersion techniques.To resolve the difficult problems of controlling the particle morphology of nano-PVC resin,a soft-measuring method based on combined neural networks was provided,and thus a soft-measuring prediction model for nano-PVC particle characteristics was developed.The application results showed that the soft-measuring model could accurately predict the mean particle size of nano-PVC resin.Optimization of particle characteristics of nano-PVC resin was successfully implemented based on the soft-measuring model in 30 m3 polymerizers,and thus nano-PVC resin with desirable particle characteristics was prepared.