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According 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......
2019-11-28First, it can significantly reduce the surface tension of the coating, improve the substrate's wettability of the coating and the fluidity of the paint film, eliminate Benard vortices and prevent bloo......
2019-11-281) Elimination of surface tension gradients; 2) Reduce the surface tension of the system. ● Organic silicon: -Significantly reduced surface tension -Good migration perf......
2019-11-281. The higher the viscosity, the slower the leveling 2. The thicker the coating film, the faster the leveling 3. The higher the surface tension, the faster the leveling......
2019-11-281. Surface tension gradient ------ liquid ------ air interface ● Surface tension gradients of the inner and outer layers cause turbulence ● Elimination of surface tension gradient is the key to obta......
2019-11-28
