Affiliation:
1. College of Materials Science and Engineering Zhejiang University of Technology Hangzhou Zhejiang China
Abstract
AbstractPolymer–ceramic composites are widely used in refractory cables. The ceramic fillers provide high temperature and fire resistance, while the polymer matrix provides flexibility and improved electrical insulation. The properties of the polymer–ceramic composites are determined by the ceramization‐forming properties of the corresponding ceramifying powders. Properties such as shrinkage, density, and porosity were characterized to compare the effects of different contents of glass powder. The sintering activation energy was calculated using the logarithmic relationship between shrinkage and holding time. The microstructure, cross‐section, and crystalline phases were investigated by scanning electron microscopy (SEM) and X‐ray diffraction analysis (XRD) to explore the ceramization process of sericite ceramifying powder. The ceramization process of ceramifying powder is proposed. The results show that during low‐temperature sintering, the glass powder and muscovite phases melt and partially transform into α‐quartz and albite low during cooling down.