Abstract
Chlorinated polyvinyl chloride (CPVC) pipes are used more and more widely as protective conduits in the field of power cables. According to the application characteristics in the field of cables, there are special requirements for the performance parameters of CPVC pipes. In this paper, several key performance parameters such as CPVC pipe size inspection, ring stiffness, longitudinal retraction rate, vicat softening temperature, density and flattening test are selected, and the theoretical research of the test method is carried out. On the basis of theoretical research, the difference between the dimensional inspection, the ring stiffness, the longitudinal retraction rate, the density and the vicat softening temperature parameters of the unqualified sample and the qualified sample are compared. It is found that the unqualified samples of the flattening test have relatively poor compressive performance, and the longitudinal plasticity stability under the influence of the heat source is also relatively poor. Moreover, when the sample size is unqualified, it directly affects the compressive performance of the sample. Through the research results, it provides the necessary reference for the application of CPVC pipes in the field of power cables.
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