After coating application, the volatilization rate of mixed solvents in the initial wet film state is mainly affected by the volatilization performance of each solvent, and the volatilization rate is similar to that of pure solvents. The relative volatilization rate of various solvents can be consulted for reference in literature. As the solvent evaporates, the viscosity of the coating increases, the evaporation rate of the solvent gradually slows down, and the wet evaporation tends to end. The wet evaporation rate of solvents is closely related to four variables: temperature, vapor pressure, surface area to volume ratio, and air flow rate passing through the surface; Water-based coatings use water as the volatile component, and relative humidity is also a significant variable.

Experts in the fluorescent whitening agent industry have learned that the technical level of fluorescent whitening agent production in China has reached the world's advanced level. Fluorescent brighteners are mainly used in four major fields in China: detergents, papermaking, textiles, and plastics. Among them, 40% are used in the detergent industry, 30% in the paper industry, 25% in the textile industry, and the plastic industry accounts for 5% of the total. It is understood that fluorescent brighteners in China have been industrialized since the 1950s.

The purpose of clothing washing is to enhance the stability of clothing. By washing with water, it is possible to shrink in advance and stabilize the size. The second is to enhance the aesthetics of clothing. By using different washing methods, various colors and textures can be washed, which is highly favored by people and increases the added value of clothing. So, what chemicals are used in the washing process of clothing?

The commonly used pre-treatment additives include desizing agents, cleaning agents, scouring agents, penetrating agents, oxygen bleaching stabilizers, chelating agents, etc. Most of these additives are surfactants, organic compounds, inorganic salts, and solvents. The most commonly used surfactants are anionic and non ionic surfactants, and there are also a small amount of amphoteric surfactants.