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Ammonia-free, Low-toxic Press-materials with Improved Electroinsulating Properties Based on Modified Novolak Phenol-formaldehyde Resin

Oleh Suberlyak1, Volodymyr Krasinskiy1, Janusz Sikora2 and Aneta Krzyżak2
Affiliation: 
1 Lviv Polytechnic National University 12, S. Bandery str., 79013 Lviv, Ukraine; vkrasinsky@polynet.lviv.ua 2 Lublin University of Technology, Nadbystrzycka 38D, 20-618 Lublin, Poland
DOI: 
https://doi.org/10.23939/chcht06.02.199
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Keywords:

Abstract: 
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. It has been shown that developed press-materials have the same technological and operational properties compared with known phenoplasts but their heat resistance, impact strength and electroinsulating properties are better.
References: 

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