Comparison Between Novolac and Resole-based Phenolic Resin in The Preparation of Thermal Insulators

Phenolic based on novolac and resole resins are used in the manufacture of thermal insulators. In this study an investigation on thermal resistance and mechanical properties of these resins and their resultant composites has been done. TGA analysis reveals a significant thermal degradation of novolac started at 420 °C and showed a maximum at 480°C. These were 380 °C and 520 °C for resole respectively.The results of flexural tests showed that novolac-based composites with a strength at break of 148 MPa had a superior mechanical properties than their resole counterparts with a strength of 101 MPa

Keywords:

Phenolic Resin , Resole , Novolac , Thermal Insulators , Heat Resistance