| 摘要 |
PURPOSE: A concrete coating composition including hollow silica is provided to prevent the swelling phenomenon of a film after contacting with water for a long time, and to prevent harmful materials from being eluted. CONSTITUTION: A concrete coating composition contains 10~20 parts of distilled water by weight, 5~18 parts of coloring pigment by weight, 60~70 parts of paint by weight, 0.5~1.0 parts of additive by weight, and 10~20 parts of hollow silica by weight. The coloring pigment contains a titanium oxide. The paint contains aqueous urethane. The additive is formed with 0.1~0.3 parts of dispersing agent by weight, 0.3~0.5 parts of thickener by weight, and 0.1~0.2 parts of anti-foaming agent by weight. The average diameter of the hollow silica is 60 microns. |
