What is the difference between solvent-based coatings and water-based coatings?

For wall decoration, many consumers still like to buy paint to decorate the wall. Coatings are generally safe and environmentally friendly, and are also resource-saving materials. Now there are solvent-based coatings and water-based coatings on the market. What is the difference between them? If you don't understand, the following small series will specifically talk about the difference between solvent-based coatings and water-based coatings.

1. The difference between solvent-based coatings and water-based coatings

1. The main variety of waterborne coatings is latex paint. Latex paint is mainly composed of water, emulsion, pigments and fillers and various additives. Solvent-based coatings are composed of resin, pigments and fillers, solvents and various additives. It can be seen that the dispersion medium of waterborne coatings is water. After coating, water and a small amount of additives volatilize from the coating film, which is environmentally friendly and safe. The dispersion medium of solvent-based coatings is organic solvent.

2. From the physical and chemical properties of the film, some physical and chemical properties of water-based coatings are not as good as those of solvent-based coatings, such as chemical resistance, weather resistance and contamination resistance. Therefore, the service life of water-based coatings is not as long as that of solvent-based coatings. However, there are some high-grade products of waterborne coatings, such as waterborne silicone-acrylic coatings and fluorocarbon coatings, and their service life is about 10- 15 years.

3. In the construction environment, the construction of water-based coatings is generally required to be above 5℃, and solvent-based coatings can also be constructed above 0℃. Therefore, solvent-based coatings can be used in northern areas near winter.

4. For the basic requirements, the water content of water-based coating construction base material should be less than 10%, and the water content of solvent-based coating construction base material should be less than 8%. Waterborne coatings have good air permeability, and the water vapor in the base layer can diffuse outward. However, solvent-based coatings are dense. If the base layer contains water, water vapor can't volatilize from the coating film, and it is easy to bubble.

2. What is waterborne exterior wall coating?

1. Waterborne wood paint, as its name implies, is a product with technical difficulty and content. Waterborne coatings are coatings with water as solvent or dispersion medium. Waterborne coatings can be divided into three categories: water-dilutable coatings, water-soluble coatings and water-dispersible coatings, which are usually called latex coatings.

2. Waterborne paint containers and tools can be washed with water, and unused paint can be stored in a cool place, saving paint resources and reducing the consumption of cleaning solvents. Water-based coatings use water as dispersion medium, and only use a small amount of low toxic alcohol ether organic solvent, which is safe and environmentally friendly, saves resources, eliminates fire hazards in construction and is conducive to reducing air pollution.

3. What kinds of waterborne coatings can be divided into?

1. is a waterborne wood paint with acrylic acid as the main component. Its main feature is good adhesion and will not deepen the color of wood. But the wear resistance and chemical resistance are poor, and the hardness of the paint film is soft. When hemoglobin is detected by pencil method, the fullness is poor, the comprehensive performance is average, and defects are easy to appear in construction.

2. It is a waterborne wood paint, mainly composed of acrylic acid and polyurethane. Its characteristics not only inherit the characteristics of acrylic coatings, but also increase the characteristics of strong wear resistance and chemical resistance. Some enterprises have also been labeled as water-based polyester paint. The paint film has good hardness, pencil ruler test 1H, good fullness and comprehensive performance close to that of oily paint. At present, only a few enterprises in China can produce it.

The above is an introduction to the difference between solvent-based coatings and water-based coatings. I believe that consumers have learned a lot about these two kinds of coatings after reading this article, so they can choose the right one according to their own needs when buying.