GMATT U800 is a premium-grade amorphous silica synthesized through a proprietary gel process. It is specifically engineered to provide superior aesthetic and mechanical performance in 100% UV-curable (Ultraviolet) systems.
Technical Specifications
Stringent quality control guarantees consistent physical and chemical properties for high-end UV formulations.
| Properties & Test Methods | Unit | Typical Value |
|---|---|---|
| Porosity | ml/g | ≥ 1.5 |
| pH Value (5% in water) | – | 6.0 – 8.0 |
| Loss on Drying (2 hours at 105 °C) | Wt% | ≤ 5.0 |
| Loss on Ignition (2 hours at 1000 °C) | Wt% | ≤ 9.0 |
| Particle Size (D50) | μm | 8.0 – 8.5 |
| Oil Absorption | g/100g | 130 – 180 |
| Content of SiO₂ (Dry basis) | Wt% | ≥ 99.0 |
| Whiteness | – | ≥ 93.0 |
| Surface Treatment | – | Specialized for UV |
Application Suggestions
High-End Wood Coatings
Ideal for 100% UV-curable wood lacquers and premium furniture topcoats, allowing natural wood grains to remain visibly clear.
Plastic & Industrial
Highly recommended for 100% UV-curable PVC flooring and industrial sheet coatings, dramatically enhancing abrasion endurance.
Specialty UV Finishes
Perfect for demanding plastic substrates, including 3C electronic casings and automotive interior plastic parts.
Packaging & Storage
Shipping Configurations
- 20′ FCL Container: 480kg / pallet | 10 pallets | Total: 4.8 Metric Tons
- 40′ HQ Container: 520kg / pallet | 20 pallets | Total: 10.4 Metric Tons
Storage Conditions
GMATT U800 must be stored in tightly closed containers under dry conditions, protected from volatile substances and humidity.
Shelf Life: Must be used within 2 years after manufacturing to ensure optimal matting performance and dispersion.
Technical Support & FAQ
Direct answers for formulators and procurement engineers regarding GMATT U800 performance.
+Q1: How does GMATT U800 improve the transparency of UV-curable coatings?
A: By utilizing an optimized particle refractive index. Engineered using a high-purity gel process, it delivers ultra-transparent films even at high loading levels, allowing natural wood or PVC textures to remain highly visible.
+Q2: Why is low oil absorption critical for 100% UV formulations?
A: It prevents viscosity spikes and maintains rheological flow. GMATT U800 features a controlled oil absorption of 130 – 180 g/100g, allowing formulators to achieve high matting efficiency in solvent-free systems without compromising leveling.
+Q3: Is GMATT U800 easy to disperse in high-viscosity UV resins?
A: Yes. It requires only standard high-speed stirring. It integrates seamlessly using a dissolver, eliminating the need for intensive bead milling and significantly reducing processing time and energy consumption.
+Q4: How does GMATT U800 enhance the mechanical durability of the cured film?
A: It acts as a structural reinforcing filler. By strengthening the polymer matrix, it provides exceptional scratch resistance and abrasion endurance, which is crucial for high-traffic surfaces like PVC flooring.
+Q5: Does GMATT U800 affect the curing speed or stability of UV coatings?
A: No. It is chemically inert and maintains shelf stability. With a stable pH (6.0 – 8.0) and specialized surface treatment, it ensures minimal impact on photoinitiator activity and the chemical curing process.