INFLUENCE OF HARDENER ОS-17 ON EXPLOITING PROPERTIES OF THE VARNISH COVERING UR-231
In the study operational properties of coverings on the basis of varnish UR-231 are investigated. Comparison tests of varnish UR-231 with hardeners OS-17 and diethylene glycol urethane (DGU), and also coverings on their basis are carried out. Varnish UR-231 put on samples of alloy D16-AT and samples of printed circuit boards according to specifications 6-21-14-90. Comparing analysis of the received results was carried for the purpose to define possibility of replacement of DGU hardener on hardener OS-17 in interests of reduction of technological process of painting of varnish coatings at the expense of reduction of time of varnish filmforming.