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Among the water-based resins used in water-based coating systems, water-based polyurethane resins, especially one-component water-based polyurethane resins, are very important ones and are widely used......
2019-12-02Because the molecular weight of the substrate wetting agent is relatively small, its silicone segment is very short, so it cannot give a good slip to the surface of the paint film (usually the slip co......
2019-12-02It can be seen from the above structure that the substrate wetting agent is actually a special type of polyether modified silicone oil, and its molecular weight is usually very small. Since the rapid ......
2019-12-02With the development of modern coatings and ink industry, the application speed of coatings and inks is getting faster and faster, so the requirements for fast wetting substrates are becoming higher a......
2019-12-02According to the accepted defoaming theory, a substance that can be used as a defoamer for a coating system usually needs to meet two points: one is to have a lower surface tension than the applicatio......
2019-12-02In the above structure, the silicone segment has 15 siloxane units, which are incompatible with the system and the surface tension is lower than the system; the polyether segment contains 8 hydrophili......
2019-12-02Generally, the structure of the leveling agent in coatings generally consists of two parts, the segments compatible with the system and the segments that are incompatible with the system and have a lo......
2019-12-02The most common silicone oil additive used in water-based coating systems is polyether-modified silicone oil, where the value of m and n determines the content of siloxane segments in the structure, a......
2019-12-02The organosilicon additives used in water-based coating systems are divided into two main categories: silane and silicone oil, as shown in Figure 1. Silane is mainly a small molecule compound, usually......
2019-12-02The water-based coatings quickly adapt to people's requirements for environmental protection and low carbon with the characteristics of low volatile organic compound (VOC) release and no hidden fire h......
2019-12-02Water-based coating systems are divided into water-soluble systems and latex systems. In water-soluble systems, the surface tension of the system needs to be strongly reduced. The most commonly use......
2019-11-28The leveling process of powder coating systems is divided into two stages. The first stage is the melting of the powder particles, and the second stage flows into a flat paint film after melting. ......
2019-11-28If degassing and substrate wetting are required, medium or high molecular weight acrylic leveling agents should be selected. In the primer, if stronger substrate wettability is required, consider u......
2019-11-28For a certain formulation system, the appropriate leveling agent should be selected according to the nature of the formula and the performance expected from the leveling agent. 1. When deciding on ......
2019-11-28Acrylic leveling agents include pure acrylic leveling agents and modified acrylic leveling agents. Pure acrylic leveling agents include traditional non-reactive acrylic leveling agents and new func......
2019-11-28
