CensilMatt 3651C | Premium Matting Agent
CensilMatt 3651C | Premium Matting Agent
CensilMatt 3651C — High-Performance Silica Matting Agent for Wood Coatings
CensilMatt 3651C is a high-performance precipitated silica matting agent with a BET surface area of approximately 290 m²/g, precision-engineered for premium wood coatings, UV-cured finishes, and industrial topcoats. Produced by Longyan Shenghe Chemical Co., Ltd. (Sensil International LLC), CensilMatt 3651C delivers an exceptional balance of matting efficiency, film transparency, and surface smoothness that formulators demand in high-end decorative and protective coatings.
Unlike conventional matting agents that sacrifice clarity for matting power, CensilMatt 3651C achieves superior gloss reduction through its optimized particle size distribution (D50: 5–7 μm) and controlled surface chemistry. The narrow particle size range ensures uniform micro-roughness on the coating surface — scattering light evenly to produce a consistent, low-gloss appearance without visible haze or graininess. The result is a silky-smooth matte finish with excellent depth and visual appeal, ideal for premium furniture, cabinetry, and architectural woodwork.
With a SiO₂ content of ≥99% and low oil absorption (DBP: 2.4–2.8 cm³/g), CensilMatt 3651C integrates seamlessly into both solvent-borne and water-borne coating systems without significantly increasing viscosity or affecting rheology. Its untreated surface ensures compatibility with a wide range of resin systems — including polyurethane, acrylic, alkyd, UV-cure, and nitrocellulose coatings.
Technical Data — CensilMatt 3651C
| Parameter | Value | Test Method |
|---|---|---|
| Appearance | White, fine powder | Visual |
| BET Surface Area | ~290 m²/g | GB/T 21650 / BET N₂ adsorption |
| Particle Size D50 | 5–7 μm | Laser diffraction |
| Loss on Drying (105°C, 2h) | ≤5.0% | GB/T 5211.4 |
| pH (5% aqueous suspension) | 6.0–8.0 | GB/T 5211.7 |
| SiO₂ Content (dry basis) | ≥99% | GB/T 5211.14 |
| Oil Absorption (DBP) | 2.4–2.8 cm³/g | GB/T 5211.19 |
| Bulk Density | 120–160 g/L | GB/T 5211.17 |
| Surface Treatment | Untreated | — |
| Residue on 325-mesh sieve | ≤0.05% | GB/T 5211.18 |
Performance Comparison — Silica Matting Agents
| Parameter | CensilMatt 3651C | Generic Type A | Generic Type B |
|---|---|---|---|
| BET Surface Area (m²/g) | ~290 | ~260 | ~310 |
| Particle Size D50 (μm) | 5–7 | 4–6 | 6–9 |
| Matting Efficiency | High | Medium | High |
| Film Clarity (60° Gloss) | Excellent | Good | Good |
| Surface Smoothness | Excellent | Medium | Good |
| Scratch Resistance | Good | Medium | Good |
| Compatibility (Water-borne) | Excellent | Good | Good |
| Viscosity Impact | Low | Medium | Medium |
| SiO₂ Purity | ≥99% | ≥96% | ≥97% |
| Price Level | Competitive | Standard | Premium |
Applications
Premium Wood Furniture Coatings
Optimized D50 of 5–7 μm produces a fine, uniform surface texture that reduces gloss to 10–30 GU while preserving natural wood grain appearance. Ideal for dining tables, cabinets, desks, and bedroom furniture.
UV-Cured Wood Finishes
Compatible with UV-curable acrylate and polyurethane systems. Disperses well in UV formulations without affecting cure speed or film hardness. Suitable for flooring, panels, and RTA furniture.
Industrial Metal Coatings
Reliable gloss reduction with excellent adhesion and corrosion resistance retention. Low oil absorption minimizes viscosity increase in high-solids formulations.
Decorative Wall Paints
Deep matte interior wall paints with velvety, non-reflective appearance. High SiO₂ purity ensures excellent color neutrality.
Leather Coatings
Soft-touch matte effect with excellent flexibility and abrasion resistance for footwear, automotive interiors, and furniture leather.
Frequently Asked Questions
What BET surface area is ideal for wood coating matting agents?
A BET surface area of 250–320 m²/g is optimal. CensilMatt 3651C, at ~290 m²/g, sits in the ideal sweet spot — delivering strong matting efficiency while maintaining excellent film transparency.
How does CensilMatt 3651C compare to ACEMATT OK-520?
CensilMatt 3651C (BET ~290 m²/g) offers higher matting efficiency and better film clarity compared to ACEMATT OK-520 (BET ~260 m²/g), at a competitive price advantage.
What is the recommended dosage?
Typically 2–5% by weight. Satin finish (30–40 GU): 2–3%. Deep matte (10–20 GU): 4–5%.
Is it suitable for UV-cured coatings?
Yes. Fully compatible with UV acrylate, UV polyurethane, and hybrid UV formulations. Does not interfere with photoinitiator activity or cure speed.
Precipitated silica vs. fumed silica for matting?
Precipitated silica offers uniform spherical particles, narrow size distribution, lower cost, and easier dispersion — making it the preferred choice for coating matting applications.
Request a Sample
Free samples (up to 500 g) and formulation support available.
Email: sales@sensilcoating.com | Phone: +86 0597-2200392