| 摘要 |
PURPOSE:To improve water-proof and dust-proof effects by coating with a coating paint, the viscosity and thixotropy factor of which is within a specified range within the range of a designated amount of coating in coating an open-air storage of accumulated material like coal. CONSTITUTION:Prepared is a coating paint containing vinyl acetate polymer as solute which becomes insoluble in water after drying, for example, resin, a film forming agent and butylcellosolve as a thickener and methylcellulose and having an ordinary temperature viscosity of 500-25,000 centipoise and thixotropy factor of 2-8. The surface of accumulated material is coated with the coating within the range of the coating amount of 0.05-5kg/m<2>. Thus, the coating stays on the surface of the accumulated material, which is little influenced by the percentage of water content and particle size of the accumulated material and the temperature and humidity at the time of painting to maintain water-proof and dust-proof property for a long time. |
