What are the effects of different temperatures on the properties of PVC in the cable sheath extrusion process?
Effects of Temperature on PVC Sheath Extrusion During the cable sheath extrusion process, polyvinyl chloride (PVC) transitions through distinct thermodynamic states that dictate its rheological and mechanical properties. Strict temperature control is critical: underheating results in incomplete gelation (fusion), high melt viscosity, and surface defects like “sharkskin,” while overheating triggers autocatalytic thermal degradation, releasing hydrochloric […]