| 摘要 |
<p>FIELD: finishing materials. SUBSTANCE: composition fit to fill cracks on wood, concrete, and plastered surfaces, and to be jobbing material when manufacturing molded objects contains (in wt %): polyacrylamide, 1.5-3.0; chalk, 15-30; zinc oxide, 1-2; paper-making waste, 10-15; sodium tetraborate, 0.5-1.0; water, the balance. Composition is prepared in mixer by way of wet milling of damp paper waste, agitation with gel-like polyacrylamide, and adding chalk, zinc oxide, and sodium tetraborate. EFFECT: improved preparation procedure. 2 tbli</p> |
