Pore control of suspension polyvinyl chloride with low polymerization degree
The influence of the types and amounts of main dispersants,auxiliary dispersants and chain transfer agents on the porosity of low polymerization degree polyvinyl chloride resin was studied.The performance of low polymerization degree polyvinyl chloride resin prepared by temperature-constant polymerization process and temperature-variable polymerization process was compared.The results showed that using polyvinyl chloride alcohol with lower alcoholysis degree and hydroxypropyl methyl cel-lulose as the main dispersants,and adding a certain amount of auxiliary dispersants,the pore structure was improved.The temperature-variable polymerization process and the addition of chain transfer agents could both improve porosity.
low polymerization degree polyvinyl chloridedispersantchain transfer agentpoly-merization temperatureconversion rateporosityplasticizer absorption
NETL
NSTL
万方数据
