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Nov 22, 2017
Leveling agent principle
Surface tension is the main driving forceof coating leveling, but the surface tension difference, but it is the maincause of surface defects. To improve the surface tension of the coating toachieve the surface tension balance, which is the flow of the coating andleveling is very useful, but it can’t. So people had no choice but to reducethe surface tension of the coating to eliminate surface tension difference,control the surface state of the coating to eliminate surface defects. Such asthe elimination of Bernard vortex, to prevent the occurrence of flower andorange peel. Eliminating the surface tension gradient of the coating filmsurface to prevent shrinkage and ripple generation. Reduce the interfacialtension between the coating and the substrate, enhance the spreadability of thecoating, improve the adhesion, reduce or eliminate the shrinkage caused by thesubstrate. Silicone oil and organic modified polysiloxane is the coatingindustry, the use of an earlier, more widely used as a surface state controlagent, the basic surface tension can be eliminated due to poor surface defects.