Ammonia-free, Low-toxic Press-materials with Improved Electroinsulating Properties Based on Modified Novolak Phenol-formaldehyde Resin
The technological and operational properties of press-materials based on novolak composition modified jointly by epoxydianic resin and polyvinylpyrrolidone depending upon filler nature and pressing conditions have been determined. The reactivity of obtained press-powders has been investigated depending upon filler type, as well as curing conditions of composites under which ammonia and formaldehyde are not emitted.