INFLUENCE OF THE MECHANISM AND PARAMETERS OF HARDENING OF MODIFIED NOVOLAC PHENOL-FORMALDEHYDE RESINS ON THE PHYSICOMECHANICAL PROPERTIES OF THE COMPOSITE

摘要

We study the influence of concentrations of the components of reactive compositions and the conditions of production and hardening of phenol-formaldehyde resins with the help of epoxy resins in the presence of polyvinylpyrrolidone on the physicomechanical, thermal, adhesion, insulation, and anticorrosion properties of the composites. The positive effect of modifications with polyvinylpyrrolidone and epoxy resin manifests itself within the following ranges of concentrations: 0.5-1 wt.% of polyvinylpyrrolidone and 25-30 wt.% of ED-20 in the presence of 1 wt.% of N, N-dimethylaniline.