| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: urea resin coating composition contains hollow glass and-or aluminosilicate microspheres of diametre 100-300 mcm, functional additives chosen from the group including ammonium polyphosphate, wollastonite, microcalcite in ratio of glass to aluminosilicate microspheres 1:1. Work surface coating process involves separated preparation of two reagents, one representing compound diamine reaction component A mixed with powder filling mix, containing wt %: hollow microspheres 80-85 and functional additives 15-20, and another reaction component B representing diisocyanate. It is followed with separate, but simultaneous uniform dispersion of compound component A and component B on a coated surface. Once reaching thereof, both components instantly form polymeric binding agent - urea resin with components of powder filling mix being uniformly distributed. Diamine and diisocyanate are taken in equimolar ration required to produce urea resin. ^ EFFECT: higher coating performance, cost reduction, simplified coating process. ^ 3 cl, 1 tbl |
