Silicon Dioxide For Anti Corrosive Pigments
In the anticorrosive coating formulation, silica is used as a thickening, thixotropic, and anti deposition additive, thickening, anti settling, suspension and so on.The filler and other additives can be uniformly dispersed in the resin, not precipitation phenomenon.Thixotropic effect of silica makes the coating has excellent anti sagging property and thickness of coating performance, improve the construction performance.
Mechanism of action: when the silicon dioxide is dispersed in non-polar liquid, the silanol groups on different particle surfaces form a bridge through hydrogen bond interaction, and the composition of this three-dimensional structure produces thickening effect. When the system is affected by the mechanical force, such as stirring or shaking, the structure damage, mechanical force type and duration effects determined by the extent of the damage, the result is the thickening system become liquid. If the stationary state is maintained, the silica particles will be joined together to restore the original viscosity. This phenomenon is known as pseudo plasticity.
Anti-Corrosive Pigment-Silica
Replace: Modified zinc phosphate
Dry, white, free flow powder, silica based Anticorrosive Pigment, chromium free anti-corrosive pigments protect metal when used in coil coating primers, general industrial primers, and primers for automotive and marine coatings. It is silica products are based on Ion-exchanged Amorphous Silica and have been developed as a replacement for toxic anti-corrosive pigments like zinc chromate or strontium chromate as well as an alternative for heavy metal containing zinc phosphate based pigments.
Feature
1,Lower A/C pigment addition levels vs. existing IES pigments
2, Lower interaction with catalysts
3, Low sensivity to prolonged dispersion time.
Application Fields
Coil Coating, Appliance Finishes, Transportation and Heavy-Duty, Equipment Coatings, Metal Furniture Finishes.
Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent
