Really stone paint application problems, help you solve KeBao paint

True stone lacquer is very hot now, exterior decoration is basically made of really stone paint. Really stone paint have adornment sex is strong, wide applicable range, good durability, high fastness, exterior wall decorative paint is a kind of popular. In the construction and application of really stone paint, often appear some issues which affect the quality and the adornment effect, this is common. Today, the small KeBao paint version will show you the common problems in applications of really stone paint. 1. Coating is too soft. # high quality really stone paint coating should be very hard, and can't shave her nails. If in case the weather is good, after three days of construction, the nails can be used for digging, coating should be considered too soft. True stone lacquer is too soft is the major reason for the choice of the emulsion is not appropriate. Many manufacturers in the preparation of true stone lacquer is used when the same emulsion with each emulsioni paint, this is wrong. Real low content of coating formula of emulsion in roller, and because there are a large amount of sand and gravel in the film-forming process, coating is not close. Therefore, we should choose high adhesion and high minimum film-forming temperature of latex. # studies, stone paint with emulsion adhesive strength should not be less than 3 mpa, minimum film-forming temperature should not be less than 20 ℃. Higher minimum film-forming temperature may cause when the air temperature is low is not easy to film defects, this can be achieved by adding more appropriately film additive to solve. Film forming additive in completely volatilize after coating is dry, generally does not affect the performance of the coating. At present, widely used in water-based latex paint production alcohol ester - 12 in really stone paint applications also have very good effect, the dosage general emulsion five per 100, winter can add appropriately. # 2. Paint white under the influence of water used for really stone paint dry film forming additive of acrylate emulsion should have good resistance to water, so the coating after drying the water don't strain white. However, some really stone paint coating will become loose after each rain to bleach. After the rain stopped, the coating will restore the original color after exposure to the sun. Through the analysis, this is due to the poor resistance to water and water imbibition of coating. From the structural analysis of polyacrylate, should really stone paint coating with good resistance to water. However, due to the need to add in the synthesis of acrylate emulsion surfactants, some manufacturers use a lot of surface active agent to increase the stability of the emulsion. Some manufacturers to join in the preparation of really stone paint materials such as carboxymethyl cellulose, hydroxyethyl cellulose as a thickening agent, sodium benzoate as a preservative. These substances are water-soluble or hydrophilicity. If after the film coating in the coating, coating water resistance will be greatly reduced. Experiments show that in the case of not add any additives, spraying pure acrylic emulsion and quartz sand coating formed by bibulous rate is 0. 42%; When adding 0 to the coating. When 4% hydroxyethyl cellulose, bibulous rate is increased to 4. 3%. Because really stone paint coating is relatively thick, suction, once it is not easily released in a short period of time, resulting in loose white appearance and internal coating. # in order to solve the above problems, can improve the raw material and formula. First of all, should choose good quality latex. In recent years the development of organic silicone modified acrylate emulsion ( Silicone acrylic emulsion) With good hydrophobic. Can effectively resist the invasion of water. Second, should choose a kind of special thickener. Thickeners thickening effect is good, less dosage, do not cause the significant change of coating performance. At present, there are many thickening agents on the market to choose from. # in addition, add silicone waterproof liquid in really stone paint can also be unexpected good results. The rain dripping on the surface coating, not penetrating coating, make true stone paint decorative effect and waterproof function. # 3. Lost too much in the process of spraying sand. # some really stone paint will drop more in the process of spraying sand, in serious cases will drop a third, wasteful. In addition to the cause of the construction methods, raw materials and formulation can also cause the above phenomena. At present, really stone paint with sand has two kinds: artificial sand and natural sand. According to the observation # these are edge xiao to share with you the common problems in applications of really stone paint. After reading, you will prevent and deal with them. I hope they will help you. Like paint friends can read more about the paint the natural really stone paint what are the advantages? You'll understand when you finish see 'information.