Measures to deal with the phenomenon of "sickness" before and after coating storage and construction

1, turbidity clear oil, varnish in the transport and storage process found poor transparency, turbidity phenomenon, is sick. If the thinner is not selected properly, too much dosage or contains water, it is often one of the causes of murky. Since varnishes are collage-like substances, their stability depends mainly on the solubility of various film-forming substances in solvents, the selected thinner dissolves poorly, and some paints are insoluble, and they become murky. Such as short oil alcoholic acid resin varnish, only with 200 solvent gasoline dilution is not possible. Too much diluent dosage, will make the collegial varnish damage, the resin, light hair murky, heavy can also become white paste-like, the elimination method can choose to use appropriate solvents or add a solvent with strong solubility. But it's hard to save it if it's paste out. In addition, if the diluent contains a small amount of water, causing turbidity, but also more troublesome, therefore, it must be noted that the diluent should not have moisture. Dry materials, especially lead dry materials, are also easy to make transparent coating turbidity, can be temporarily removed by heating methods due to lead catalyst turbidity, but it is best to filter purification. If it is mixed with moisture caused by turbidity, or storage temperature is too low, the oil in the oil in the low temperature, can be temporarily removed by heating method.2, thickeningcoating in the storage process gradually increased viscosity, but it must be different from the tentacles, due to solvent volatilization or solvent improper use or due to oxidation polymerization and other reactions to increase viscosity phenomenon called thickening. Touch change is very much like liverization at rest, but once stirred by external forces can become free of activity, it is caused by the expansion of pigments and body pigments, which can not be said to be a disease, but a man-made characteristics. Use it to prevent the precipitation of coatings and eliminate the phenomenon of hanging when painting.paint is too acidic, synthetic salts with alkaline pigments, which can thicken the paint and even freeze. Pigments containing water or water-soluble salts to wash will also thicken the paint, others may be solvent volatility and storage temperature overheating, too cold caused. Alicic varnish if thickened, can be added some butanol to solve, storage temperature is too high, for some heat to react to the resin, of course, to thicken, cold season, viscosity will naturally increase, but this is not the paint itself increased viscosity caused construction difficulties, it is recommended that storage sites to keep the temperature at about 20 degrees C. Some paint base should choose salt-based pigments, containers to be closed, open the barrel to cover, preferably 2-3 days, the longest week to run out.3, color changevarnish solvents, some very easy to hydrolysate and iron container reaction, dissolve part of the black iron compounds, varnish acid resin also reacts with iron barrels into red. In addition, the varnish itself reacts with the shengr to make the color darker. For color paint, a variety of pigments fade and metallic pigments turn green, faded significant examples are containing iron orchids and grass green paint, due to the lack of air in the container iron orchids play a reducing effect to fade, but once exposed to air, iron orchids are oxidized to restore. Another color change is due to the different proportions of several pigments in the complex paint, the pigment sinks and floats, in use only need to be fully stirred to restore the primary color. Metal pigments (aluminum powder, copper powder) hair or green, mainly in oil or paint free acid corrosion of aluminum powder copper powder, so that the metal lost its luster, optional neutral paint. The most effective way to implement the distribution, with the use of.4, lumps and precipitation in the production and transportation process of color paint precipitation, such as stirring can be reconciled, which is a normal phenomenon. Such as precipitated after the lump, can not be stirred and dispersed is a disadvantage. The reason is often the pigment used than significant, grainy, or filler more, paint viscosity is too low, as well as poor grinding dispersion, paint on the pigment wetting is not good, pigment and paint reaction, or the corresponding adsorption and so on. The prevention and control method is to pay attention to the adaptability of pigment and paint base, increase the viscosity of paint, add tactient or wet suspension.5, skinoxidation drying paint (e.g. oily paint, self-drying synthetic resin paint) in the opening of the barrel surface oxidation, curing a skin-like phenomenon, called cortical. Before construction must be removed, otherwise the paint film will become coarser, damage the beauty of the paint film. When the barrel dissatisfaction, easy to have air or barrel cover uneven, that is, there is a tendency to skin. In order to avoid severe skin, when construction, it is best to put the unused paint barrel on the corresponding thinner closed surface, so that it separates the air. In recent years, the emergence of anti-cortide agent, can fundamentally better solve this ill.6, container deformation such as improper storage site, and hot weather, so that the temperature in the tank increased, the solvent in the paint gradually become gaseous, so that the closed tin slowly expand, if not processed in time, will gradually burst leakage. In the event of this phenomenon, the lid can be opened, the gas in the tank can be discharged, and then closed to a cooler place.