SEGREGATED STRUCTURES IN CARBON BLACK-CONTAINING IMMISCIBLE POLYMER BLENDS - HIPS/LLDPE SYSTEMS

摘要

The structure/electrical resistivity relationship in CB-loaded immiscible HIPS/LLDPE blends was studied. Effects of CB content and location, dispersed polymer phase size and shape, dispersed phase viscosity, and processing procedures were examined. The elongated dispersed phase in CB-containing blends is essential for promoting conductivity in formulations prepared by melt mixing and compression molding. However, the same formulations proved highly resistive when injection-molded, due to orientation and excessive shearing. (C) 1997 John Wiley & Sons, Inc. [References: 27]