Study of thermal and dielectric behavior of low-density polyethylene composites reinforced with zinc oxide whisker

摘要

Different scanning calorimetry and dynamic mechanical analysis are used to study the thermal behavior of composites by melt-mixing low-density polyethylene (LDPE) matrix and zinc oxide whisker (ZnO_W) fillers. Micrographs of the composites illustrate that needle or wedge shaped ZnO_W are distributed uniformly in the LDPE matrix. Dielectric properties of the composites are measured in a frequency range of 1-10 MHz. The results show that the addition of ZnOw does not affect the melting behavior of LDPE, but has an important effect on the heat of fusion, dynamic mechanical behavior, and dielectric behavior of the composites.