Study on Processibility and Properties of Thermosetting Composition of Coal Tar Pitch and Phenol Formaldehyde Resin

摘要

A simple and reproducible method has been developed for processing of thermoplastic coal tar pitch(CTP)which had been effectively modified for reduction in its carcinogenic components to form thermosetting composition with phenol-formaldehyde(PF)resin in presence of a cross-linking agent.These thermosetting sheets thus prepared in two-step procedure showed appreciable improvement in electrical and thermal properties.The waterproofing tendency also improved as the amount of CTP was increased to a particular level.The best properties were observed for the thermosetting composition where 40 phr of CTP was present.Thus these sheets can be used for electrical,thermal and waterproofing applications like thermostat casing,insulators,switch boards,electronic tube bases,furniture,roof sheathing,exterior wall sheathing etc.