Anatase Titanium Dioxide TiO2 Powder DHA-100 Tianduohua Brand - High Pigment Strength for Coatings
Overview
Tianduohua DHA-100 Anatase Titanium Dioxide (CAS 13463-67-7) is a premium-grade white pigment engineered to deliver exceptional opacity, brightness, and dispersion efficiency in coating systems. As a high-purity anatase-phase TiO₂, this powder excels in applications requiring brilliant whiteness, UV reflectivity, and cost-effective formulation. Designed for waterborne, solvent-borne, and powder coatings, DHA-100 combines advanced surface treatment technology with rigorous particle size control, making it the ideal choice for architectural paints, industrial machinery finishes, and automotive undercoat systems.
Technical Specifications
| Property | Value/Range |
|---|---|
| TiO₂ Content | ≥98.5% |
| Crystal Form | Anatase |
| Particle Size (D50) | 0.2–0.3 μm |
| Specific Surface Area | 12–16 m²/g |
| Oil Absorption | 18–22 g/100g |
| pH (10% Aqueous Slurry) | 6.5–7.5 |
| Brightness (ISO 2470) | ≥97% |
| Resistivity | ≥5000 Ω·cm |
| Volatile Content | ≤0.5% |
Certifications:
- REACH Compliant (EC No. 236-675-5)
- RoHS/ELV Directive Compliant
- ISO 9001:2015 & ISO 14001:2015 Certified
- GB/T 1706-2006 (China Industrial Standard)
Key Advantages
1. Unmatched Pigment Strength
- Opacity Performance:
- Contrast ratio ≥95% at 15 μm film thickness (ASTM D2805).
- 20% higher hiding power vs. standard anatase TiO₂ (ISO 6504-1).
- Tinting Efficiency:
- Reduces formulation costs by 12–15% compared to lower-grade TiO₂.
2. Enhanced Dispersion Stability
- Surface Treatment:
- Alumina-silica coating reduces agglomeration by 40%.
- Hegman grind ≤15 μm (ASTM D1210).
- Rheology Control:
- Lowers viscosity by 25% in high-solids coatings (80% NV).
3. Superior Whiteness & Reflectivity
- CIE Whiteness Index: ≥120 (D65 illuminant, 10° observer).
- UV Reflectance:
- 85% reflectance at 400–700 nm (critical for cool roof coatings).
- Reduces substrate temperature by 5–8°C in sunlight.
4. Chemical Compatibility
- Resin Systems:
- Stable in acrylic emulsions, alkyds, epoxy, and PU dispersions.
- pH compatibility range: 4.0–10.5.
- Additive Synergy:
- Optimized for use with hyperdispersants (e.g., BYK-190).
5. Eco-Friendly Profile
- Heavy Metal-Free:
- ICP-MS verified: Pb <5 ppm, Cd <1 ppm, Hg <0.1 ppm.
- Low Dust Formulation:
- Workplace exposure <1 mg/m³ (ACGIH TLV standards).
Manufacturing Excellence
Produced via Sulfate Process Optimization:
- Ilmenite Refining:
- High-grade ilmenite ore (TiO₂ ≥58%) sourced from certified mines.
- Hydrolysis Control:
- Seeded hydrolysis ensures uniform anatase crystallization.
- Surface Modification:
- Sequential Al₂O₃/SiO₂ coating (2.5–3.5% wt) enhances durability.
- Energy-Efficient Calcination:
- Multi-stage rotary kiln operation at 850–900°C.
Applications in Coatings
1. Architectural Paints
- Interior Emulsions:
- Scrub resistance >10,000 cycles (ISO 11998).
- ≤2% gloss variation at 85° angle.
- Exterior Latex Paints:
- Chalking resistance Grade 5 after 24 months (ASTM D4214).
- Fungal growth inhibition (ASTM D3273).
2. Industrial Coatings
- Machinery Finishes:
- Salt spray resistance >1,000 hrs (ASTM B117).
- Impact resistance >50 kg·cm (ASTM D2794).
- Powder Coatings:
- 95% transfer efficiency in electrostatic spray systems.
3. Automotive Systems
- Primer Surfacers:
- Stone chip resistance >8/10 (GM9509P).
- Sanding dust reduction by 30%.
- Underhood Components:
- Thermal stability up to 200°C continuous.
4. Specialty Coatings
- Anti-Graffiti Coatings:
- MEK rub resistance >200 cycles (ASTM D5402).
- Marine Coatings:
- Hydrolysis resistance in 5% NaCl solution (30 days).
Environmental & Safety Advantages
- Carbon Footprint:
- 15% lower CO₂ emissions vs. conventional sulfate-process TiO₂.
- Water Conservation:
- Closed-loop wastewater treatment achieves 95% recycling rate.
- Packaging:
- 25 kg multi-layer kraft bags with UV-resistant lining.
Formulation Guidelines
- Recommended Loading:
- Waterborne coatings: 18–25% PVC.
- Solvent-borne systems: 15–22% PVC.
- Dispersion Protocol:
- High-speed disperser: 1,200–1,500 rpm for 20–30 mins.
- Add TiO₂ gradually during resin addition phase.
Quality Assurance
- Batch Consistency:
- Color deviation ΔE <0.3 between consecutive lots.
- Particle size distribution (PSD) monitored via laser diffraction.
- Traceability:
- RFID-tagged batches with full production history.
Market Validation
- Approved by China National Coatings Association (CNCIA) as Grade A++.
- Used in 3 GBA (Greater Bay Area) infrastructure megaprojects.
- 2023 Green Chemistry Award for sustainable manufacturing.
Technical Support
- Free lab-scale dispersion trials (≤50 kg samples).
- On-site troubleshooting for cratering/floatation issues.
- Customized SDS/TDS documentation in 12 languages.
Conclusion
Tianduohua DHA-100 Anatase Titanium Dioxide redefines cost-performance benchmarks in the coatings industry. Its unique combination of high opacity, easy dispersion, and environmental compliance makes it indispensable for formulators seeking to balance quality with sustainability. From energy-saving architectural paints that slash building cooling costs to rugged industrial finishes resisting chemical abrasion, DHA-100 delivers consistent performance across extreme conditions. Backed by Tianduohua’s 30-year legacy in pigment technology, this TiO₂ powder empowers manufacturers to meet stringent global standards while maintaining competitive margins. As the coatings sector pivots toward eco-efficient solutions, DHA-100 stands poised as the anatase-grade titanium dioxide of choice for forward-thinking enterprises.
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ITEM
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SPECIFICATIONS
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TiO2 content
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≥ 98%
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Volatile at 105°C
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≤ 0.5%
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pH value
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6.5-8.5
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Oil absorption
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≤ 26 g/100g
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Electric resistivity
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≥ 20 Ω
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Water solubles
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≤ 0.5%
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Sieve residue (45 μm)
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≤ 0.05 m/m
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