抄録
The chemical resistance of unplasticized polyvinyl chloride (HPVC) was investigated in several organic solvents at room temperature by using the static and dynamic test methods, and the results were compared with the data in service.
The results showed that the estimation of the chemical resistance of HPVC was rather difficult by the measurements of weight, hardness and tensile properties even after testing for 7∼30 days. On the other hand, the creep and stress relaxation test results gave good agreement with the data in service. From these results, a way for evaluating chemical resistance of HPVC by the stress relaxation test method was established, which gives the result in a relatively short time.
