Really stone paint bibulous rate and the impact of sand

Qualified really stone paint should have low water absorption, in order to avoid really stone paint after each rain appear white, shading and porous coating, and coating after exposure to the sun will restore to its original color. Experimental results show that with the increase of cellulose thickener, really stone paint bibulous rate is greatly increased. Hec is a kind of water-soluble products, contains a large number of hydrophilic group. Really stone paint film forming, it will be kept in the paint film, thereby reducing water resistance really stone paint. Because really stone paint coating is relatively thick, once absorb moisture, is not easily released in a short period of time, resulting in loose white appearance and internal coating. Some really stone paint products in the process of spraying construction will have a lot of sand fall off. This will not only cause waste, also will change the appearance of the product. In addition to the construction, the use of color sand types and distribution proportion can also cause such problem. By determining the same construction conditions and the same colour sand type, studied the influence of different colour sand series collocation of desanding. Tests show that when the 20 - 40 mesh color sand ratio is 30%, 40 - 80 mesh color sand ratio is 50%, 80 - To 20% 120 mesh colour sand, sand loss in construction process is less, really stone paint coating quality is better.