Really stone paint white due to what?

The heat in the summer, really stone paint, rarely white, mostly in the winter, in the rain, lasted (for) a few days after the rain, just completed construction of really stone paint surface is easy to appear one after another white, especially the temperature below 10 ℃, humidity is higher than 85 ℃, really stone paint surface appear white or fading like a flower, as it is covered in frost. What is the reason of this phenomenon? 一个。 Construction environment and really stone paint glass into membrane temperature factors of emulsion. Film-forming temperature of latex, the glass transition temperature of the emulsion, in addition to the elastic emulsion, all above 26 ℃. When the temperature is higher than or equal to the glass transition temperature, emulsion will be completely cured. The emulsion can give full play to its waterproof properties after curing. When the temperature is lower than the temperature of emulsion, the emulsion film time will be longer. When the temperature is below 10 ℃, the emulsion to keep normal in the sense of fresh, namely emulsion can not completely cured, only in the surface drying. When the temperature is below 5 ℃, the ladle true stone lacquer is likely damaged by freezing. In short, when the temperature is lower than a certain value, the can't use real stone paint. b。 The emulsion caused their own problems. Some low-level or low-cost emulsion often add more surface active agent, in order to enhance the stability of the emulsion, which will result in water resistance of the emulsion itself seriously reduced. In general, the quality qualified latex price will be higher. In order to reduce the production cost, a lot of really stone paint manufacturers only added some emulsion, this will make the dry paint film became loose and tight enough. Paint film bibulous rate will be relatively large, and then adhesive strength will be reduced accordingly. And continuous weather in the rain, the rain will infiltrate the really stone paint film, this will lead to really stone paint white. Another reason is that some really stone paint manufacturers in the production of exterior wall will add more really stone paint thickener. They are all water-soluble or hydrophilic products, will be kept in the coating after the formation of the coating, it will severely reduces water resistance of the coating.