The effect of silicone dispersant
Water-based resin is a kind of water emulsion type water medium, its itself is one of the main problems of the stability of the solution is not good, to minimize the system in order to achieve tension, solute particle coalescence and cohesion, form a larger particles, the resin coating and solid surface contact area reduced, adhesion, adhesion. The effect of this phenomenon on adhesion can be reduced as far as possible by adding highly effective silicone dispersant. The mechanical silicon dispersant has lower surface tension and higher surface activity than the carbon chain compound at the same solution concentration because its hydrophobic group is composed of alkyl siloxane which is stronger hydrophobic than the carbon chain compound.
The effect of organic fluorine wetting agent
Only when the surface energy of the water-based resin is less than or equal to the surface tension of the solid to be attached, can the adhesion be formed, in other words, if the adhesion is to be improved, the water-based resin must be fully infiltrated on the surface of the plastic to increase the effective contact area of the adhesion and increase the binding force between the interface to achieve. Therefore, by adding wetting agent, the surface tension of waterborne resin can be reduced and the physical contact with plastic surface can be increased.