High-efficiency, synthetic amorphous silica Matting Agent engineered to precisely control gloss levels in industrial, architectural, and wood coatings. Features excellent scuff resistance, low viscosity impact, and superior scuff/scratch durability without compromising film clarity.
Chemical Composition: Synthetic Amorphous Silica (SiO₂)
Surface Treatment: Available in Wax-Treated (for scratch resistance) and Unwaxed (for clear topcoats) variations
Primary Function: Precision gloss reduction (matte, semi-gloss, satin finishes) and anti-blocking
Standard Packaging: 10kg to 15kg multi-wall paper bags / Palletized freight
Synthetic Silica Matting Agents are advanced, micronized amorphous silica powders designed to lower the specular gloss of paints, varnishes, and clear topcoats. During the film-drying process, the precisely engineered silica particles migrate uniformly to the surface, creating micro-roughness that scatters light without reducing the transparency of clear coatings or shifting the hue of pigmented bases.
Wax-Treated Silica Grades: Coated with a specialized PE wax matrix during milling. The integrated wax improves anti-settling behavior during prolonged liquid storage and significantly enhances the scratch, mar, and scuff resistance of the cured coating surface.
Unwaxed Silica Grades: Pure, untreated amorphous silica offering ultimate optical clarity. Unwaxed grades are optimal for high-transparency wood finishes, clear plastics, and automotive clearcoats where maximum film clarity and inter-coat adhesion are required.
High Matting Efficiency: Optimized pore volume and controlled particle size distributions allow for maximum gloss reduction at low addition ratios, minimizing the impact on coating viscosity and flow.
Superior Film Transparency: Refractive index perfectly matched to standard architectural and industrial resins, preventing hazing or cloudiness in clear wood stains and protective finishes.
Excellent Dispersion Dynamics: Readily incorporates into paint formulations using standard high-speed dissolvers, eliminating the need for prolonged bead milling.
Wood & Furniture Coatings: Widely used in polyurethane, acid-curing, and UV-curable wood finishes for satin, matte, and dead-matte aesthetics.
Coil & Industrial Coatings: Provides consistent, reproducible gloss levels for architectural metal sheets, aluminum profiles, and heavy machinery enamels.
Plastic & Leather Finishes: Applied to automotive interior plastics, synthetic leather, and electronics housings to create a premium, soft-feel, low-glare surface.
Printing Inks & Overprint Varnishes: Controls reflection and prevents blocking (sticking) in flexible packaging and publication gravure inks.
| Property / Parameter | Wax-Treated Grade | Unwaxed Clear Grade |
|---|---|---|
| SiO₂ Content (Dry Basis %) | ≥ 98.0 | ≥ 99.0 |
| Average Particle Size (d50, μm) | 4.5 – 6.5 | 3.5 – 5.5 |
| Pore Volume (ml/g) | 1.8 – 2.0 | 1.6 – 1.9 |
| Surface Treatment | Polyethylene Wax | None |
| pH Value (5% Aqueous Slurry) | 6.0 – 7.5 | 6.0 – 7.0 |
| Heating Loss at 105°C (%) | ≤ 4.0 | ≤ 5.0 |
Silica matting agents are highly hydroscopic and readily absorb ambient moisture and volatile organic compounds. Store in original, unopened packaging in a dry, cool warehouse isolated from volatile gases. Keep bags tightly sealed after opening to prevent moisture uptake and agglomeration. Material Safety Data Sheets (MSDS) and Certificates of Analysis (COA) accompany all freight shipments.