Common knowledge of coating: advantages and disadvantages of water-based environmental protection coating industry

Core tip: with the improvement of living standards and health awareness, consumers pay more and more attention to environmental factors in the process of choosing home decoration products, hoping to exchange health through environmental protection And the water-based coating environmental protection industry has foresight At the beginning of its birth, it embarked on the road of environmental protection and became a decoration coating loved by consumers The following editor will share the advantages, disadvantages and identification methods of waterborne environmental protection coating industry Water based environmental protection coating Advantages and disadvantages of water-based environmental protection coating industry First of all, advantage analysis Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Home of paint news: with the improvement of living standards and health awareness, consumers pay more and more attention to environmental factors in the process of choosing home decoration products, hoping to exchange health through environmental protection And the water-based coating environmental protection industry has foresight At the beginning of its birth, it embarked on the road of environmental protection and became a decoration coating loved by consumers The following editor will share the advantages, disadvantages and identification methods of waterborne environmental protection coating industry The advantages and disadvantages of water-based environmental protection coating industry first, the advantages and disadvantages of analysis 1 The water-based coating uses water as solvent to save a lot of resources; the water-based coating eliminates the risk of fire during construction; reduces the air pollution; the water-based coating only uses a small amount of low toxic alcohol ether organic solvent to improve the working environment The organic solvent of general water-based coating is between 10% and 15%, while the current cathodic electrophoretic coating has dropped below 1.2%, which has a significant effect on reducing pollution and saving resources 2 The water-based coating can be applied directly on the wet surface and in the humid environment; the water-based coating has good adaptability to the material surface and strong adhesion 3 Water based coating tools can be cleaned with water, greatly reducing the consumption of cleaning solvent 4 The electrophoretic coating of water-based coating is even and flat The inner cavity, weld, edge and edge can be coated with a certain thickness of coating, which has good protection; the electrophoresis coating has the best corrosion resistance, and the salt spray resistance of the thick film cathodic electrophoresis coating can reach up to 1200h Secondly, defect analysis 1 The water-based coating has high requirements on the construction process and the material surface cleanliness, because of the large surface tension of water, dirt is easy to make the film produce shrinkage; 2 The dispersion stability of the water-based coating against strong mechanical force is poor, when the flow rate in the transmission pipeline changes rapidly, the dispersed particles are compressed into solid particles, making the film produce pockmarks It is required that the shape of the conveying pipe is good and the pipe wall is free of defects 3 The water-based coating is highly corrosive to the coating equipment, which requires anti-corrosion lining or stainless steel materials, and the equipment cost is high Stainless steel pipe is also required for corrosion and metal dissolution of water-based coating to transmission pipeline, which makes dispersed particles precipitate and coating produces pockmarks 4 The baking type water-based coating has strict requirements on the construction environment (temperature and humidity), which increases the input of temperature and humidity regulating equipment and energy consumption 5 The evaporation latent heat of water-based coating water is large, and the baking energy consumption is large The cathodic electrophoretic coating needs to be baked at 180 ℃, while the latex coating has a long drying time 6 The organic cosolvent with high boiling point of water-based coating produces a lot of oil smoke during baking, which drips on the surface of the coating after condensation and affects the appearance 7 The problem of poor water resistance exists in the water-based coating, which makes the stability of the coating and tank liquid poor and the water resistance of the coating film poor The medium of water-based coating is generally in the slightly alkaline (pH 7.5-ph 8.5) The ester bond in the resin is easy to hydrolyze and degrade the molecular chain, which affects the stability of the coating and bath solution, as well as the performance of the coating film Although there are many problems in water-based coatings, some problems are prevented in the process and some problems are improved and improved through the formulation, coating process and equipment Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,