Silica Ion Exchange Anti Corrosive Pigment Equal To XCA02 For Anti Rust Coatings
Property: White solid powder
Main Features:
Silica Anti Corrosive Pigment is widely used in primers giving resistance to corrosion of steel. Initial protection is by galvanic action. However, as the coating is exposed to the atmosphere, a progressive build-up of zinc corrosion product occurs, producing an impermeable barrier with little or no galvanic protection. To give good galvanic and barrier protection, high levels of zinc are required, about 85% zinc in the dry film by weight. Resins which may be considered are epoxies and silicates. Obviously, for the zinc to function correctly it has to be in intimate contact with the steel substrate and therefore good surface cleanliness prior to application is essential.
.
Main Applications:
The types of anti-corrosion coatings used for OBM are often single pack products as this avoids the difficulties of measuring and mixing small quantities of two pack products, although small quantities of two pack products are sometimes available from paint manufacturers. Repairs carried out by the crew of vessels in service are rarely successful in the long term, due to the difficulties of preparing the surfaces to a sufficiently high standard.
Main Components:
Flake modified silicon Dioxide
Rust-proof Mechanism:
Physical anti-rust: The product can help paint film achieve a physical shielding effect and improve its performance of high temperature protection.
Technical Indexes:
| Items | Specifications |
| SiO2 Content (based on Ignited Substance, %) | 99 |
| Porosity (ml/g)≥ | 0.3-0.5 |
| Oil Absorption (DBP, g/100g) | 70-120 |
| Particle Size Laser diffraction, d50(μm) | 2.7-3.2 |
| Loss on drying (105℃ %≤) | <5 |
| Loss on Ignition (1000℃%≤) | <10 |
| Whiteness %≥ | 95 |
| PH Value (5% in water) | 5.5-7.5 |
Usage:
Dispersed and directly blend the product with base, auxiliary materials, additives and solvents.
Suggested dosage:
It is suggested to use between 5%~10%.
