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

Автори: 
Oleh Suberlyak, Volodymyr Krasinskiy, Janusz Sikora and Aneta Krzyżak

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.

[1] Knop A. And Sheib B.: Phenolnye Smoly i Materialy na ich Osnove. Khimiya, Moskwa 1983.
[2] Nikolaev A.: Technologiya Plasticheskih Mass. Khimiya, Leningrad 1977.
[3] Krutskyi A. And Timofeeva N.: Pat. 95112964 Russ. Fed., Publ. Apr. 24, 2006.
[4] Nikolaev N., Strelkov V., Chumaevskyi V. and Gusarova L.: Pat. 2114882 Russ. Fed., Publ. March 22, 2003. 
[5] Nikolaev A., Trizno M., Kryganovskyi V. et al.: Plast. Massy, 1969, 8, 48.
[6] Suberlyak O., Krasinskyi V., Kochubei V. and Shapoval J.: Dopovidi Nats. Akad. Nauk Ukrainy, 2009, 2, 148.
[7] Suberlyak O., Krasinskyi V., Shapoval J. And Grytsenko O.: Phisiko-Chim. Mechanika Materialiv, 2010, 5, 82.
[8] Tetevosjan G. and Kuznetsova I.: Technologia Sinteticheskih Smol, Plasticheskih Mass i Izdelij iz nih. Vysshaja shkola, Moskwa 1967.
[9] Udalov Yu., Germanskyi A., Zhabrev V. et al.: Technologiya Neorganicheskih Poroshkovyh Materialov i Pokrytiy Funkcionalnogo Naznacheniya. Sankt-Peterburg 2001.
[10] Panteleev A., Shevcov Yu. And Goryachev I.: Spravochnik po Proektirovaniyu Osnastki dlya Pererabotki Plastmass. Mashinostroenie, Moskwa 1986. 
[11]  Firdous Habib and Madhu Bajpai: Chem. & Chem. Techn., 2010, 4, 205.