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The Manufacturing of Composite Materials in the Matrix of Modified Phenol-Formaldehyde Resins

Krasinskyi Volodymyr, Jachowicz Tomasz, Dulebova Ludmila, Gajdoš Ivan, Malinowski Rafał

Advances in Science and Technology. Research Journal

2021

Vol. 15, no 4

267--272

The work develops the method of obtaining new composite materials based on novolac phenol-formaldehyde resin with improved adhesion properties and heat resistance. The composites were obtained by chemical modification of phenol-formaldehyde resin by epoxy resin and polyvinylpyrrolidone during the hardening of the composition. The mechanism of resins modification and hardening has been determined. It is shown that due to the modification, the heat resistance and adhesive strength of the obtained enamels and coatings have significantly increased. In particular, with the polyvinylpyrrolidone content from 0.5 to 1 wt% and epoxy resin from 25 to 50 wt%, the adhesive strength of the compositions increases 5-7 times.