Ivoire Differences in water-based mineral oil ink defoamer(1)

Ivoire  Advantages of water-based mineral oil in water-based paint systems:

varnish

Action mechanism of polysiloxane defoamer
The representative defoaming mechanisms of polysiloxane mainly include "bridging spreading" mechanism, "bridging dehumidifying" mechanism, and "spreading liquid entrainment" mechanism. The "bridging spreading" mechanism mainly starts from the basic point of "polysiloxane has a relatively low tension and is easy to spread on the liquid film." It emphasizes that defoamer droplets are prone to deformation, but this theory cannot explain the defoaming differences between individual polysiloxanes and mixtures of polysiloxanes and solid ions as defoamers. The "bridging dehumidification" mechanism is mainly based on the hydrophobicity of polysiloxanes themselves, but the defoaming effect of polysiloxanes with high viscosity cannot be well explained. The "spreading liquid entrainment" mechanism cannot be confirmed because some facts indicate that polysiloxanes sometimes do not spread on the surface of the foam film, but can also break the foam.

recoating

leveling

Organosilicon type ink defoamer can reduce tension on the surface of coatings, have excellent defoaming and foam inhibiting capabilities, and have little effect on the gloss of the coating film under different environmental factors. However, when not used properly, they can cause poor recoating performance, uneven surface such as film shrinkage, and polyether type defoamers have high compatibility requirements and weak defoaming capabilities.

The water-based mineral oil ink defoamerhas a fast defoaming speed and a foam inhibiting effect of up to several hours, which is also well matched with the foam system. It can be carried out in harsh environments such as high temperatures and strong alkalis, with good results. After use, there will be no phenomena such as oil bleaching and demulsification