Nanfeng Barium Sulfate Precipitated for Powder Coating 800 Mesh
Product Overview
Nanfeng Precipitated Barium Sulfate 800 Mesh is a premium-grade synthetic barium sulfate engineered specifically for high-performance powder coating formulations. With a meticulously controlled particle size distribution (D50: 5–8 µm) and 94% ISO whiteness, this ultra-fine powder delivers unmatched matting efficiency, rheological stability, and durability in epoxy, polyester, and hybrid resin systems. Compliant with GB/T 2899-2008 and global industrial standards, Nanfeng Barium Sulfate enables 15–25% higher filler loading compared to conventional calcium carbonate or talc, reducing formulation costs while enhancing surface aesthetics and mechanical performance.
Sourced from high-purity barite ore and processed via advanced precipitation and micronization technologies, this product offers:
- Uniform Light Scattering: Achieves consistent low-gloss finishes (20–40 GU @ 60°) without haze or surface defects.
- Thermal Resilience: Stable up to 1,580°C, ideal for high-bake curing processes.
- Chemical Inertness: Resistant to acids (pH ≥2), alkalis (pH ≤12), and solvents (MEK rubs >200 cycles).
- Eco-Conscious Composition: Heavy metal-free (Pb/Cd/As ≤5 ppm), REACH/RoHS compliant, and produced via 70% renewable energy.
Certified under ISO 9001 and ISO 14001, Nanfeng Barium Sulfate is the sustainable choice for manufacturers prioritizing performance, compliance, and cost efficiency.
Key Features & Competitive Advantages
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Superior Matting & Optical Performance
- High Extinction Power: Reduces gloss by 60–80% at 10–15% loading (vs. 20–30% for silica).
- Whiteness Stability: Maintains 94% ISO brightness after 1,500 hours QUV-B exposure (ASTM G154).
- Surface Smoothness: PDI <0.20 ensures minimal orange peel and cratering.
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Enhanced Coating Durability
- Abrasion Resistance: Improves Taber abrasion resistance by 30% (ASTM D4060) at 20% loading.
- Corrosion Protection: Passes 1,000-hour salt spray tests (ASTM B117) in epoxy primers.
- Adhesion Boost: Cross-cut adhesion ≥4B (ASTM D3359) in polyurethane topcoats.
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Formulation Flexibility
- Low Oil Absorption (12–16 g/100g): Reduces resin demand by 10–15%, lowering VOC emissions.
- Rheology Control: Maintains melt flow index (MFI) of 35–45 g/10min (ASTM D1238).
- Fast Dispersion: Achieves Hegman fineness ≥7 within 15 minutes (ASTM D1210).
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Sustainability & Safety
- Zero-Waste Production: 95% raw material utilization and 85% process water recycling.
- Dust-Free Handling: OSHA-compliant granulation with ≤0.2% respirable particles.
- Carbon-Neutral Logistics: 50% biofuel-powered transportation fleet.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO₄ Purity | ≥98.0% | XRF (GB/T 2899-2008) |
| Moisture Content | ≤0.3% | ISO 787-2 |
| Physical Properties | ||
| Particle Size (D50) | 5–8 µm (800 mesh) | Laser Diffraction (ISO 13320) |
| Specific Gravity | 4.4–4.6 g/cm³ | ISO 787-10 |
| Whiteness (ISO) | 94 ± 1% | ISO 2470 |
| Performance Data | ||
| Oil Absorption | 12–16 g/100g | ISO 787-5 |
| pH (10% Slurry) | 6.5–7.5 | ISO 787-9 |
| LOI (1,000°C) | ≤0.5% | TGA (ISO 11358) |
Application-Specific Benefits
1. Architectural Powder Coatings
- Facade Panels: Delivers uniform matte finishes with Class A fire resistance (ASTM E84).
- Window Frames: Enhances UV stability (ΔE ≤1.0 after 2,000 hrs Xenon exposure).
- Anti-Graffiti Coatings: Facilitates easy cleaning without gloss alteration.
2. Automotive & Transportation
- Alloy Wheels: Improves chip resistance (Gravelometer ≥8B, ASTM D3170).
- Engine Components: Withstands thermal cycling (-40°C to 200°C) and oil exposure.
- EV Battery Housings: Halogen-free, flame-retardant grades (UL94 V-0).
3. Industrial Equipment
- Agricultural Machinery: Resists corrosion from fertilizers and humidity.
- HVAC Systems: Anti-static properties (surface resistivity: 10⁹–10¹¹ Ω/sq).
- Electrical Enclosures: Reduces arc tracking resistance (CTI ≥600 V).
4. Consumer Goods
- Home Appliances: Scratch-resistant finishes for refrigerators and ovens.
- Outdoor Furniture: Low-temperature cure compatibility (120–140°C).
- 3D Printing: Enhances powder bed fusion (PBF) flowability and resolution.
Production Process & Quality Control
- Raw Material Sourcing: Natural barite ore (BaSO₄ ≥96%) from certified mines.
- Precipitation Reaction:
- BaCl₂ + H₂SO₄ → BaSO₄↓ + 2HCl (pH-controlled for uniform crystal growth).
- Purification & Washing:
- 3-stage countercurrent washing to remove chlorides (Cl⁻ ≤100 ppm).
- Micronization:
- Wet grinding with zirconium beads to 800 mesh fineness (D97 ≤12 µm).
- Surface Modification:
- Stearic acid coating (0.8–1.2% w/w) for hydrophobic dispersion.
- Drying & Classification:
- Spray drying + air-jet sieving to ensure D100 ≤15 µm.
- Quality Assurance:
- ICP-MS for heavy metals (Pb/Cd/As ≤5 ppm).
- SEM analysis for particle morphology.
- Batch-wise ISO 9001 certification.
Competitive Comparison: Nanfeng 800 Mesh vs. Alternatives
| Property | Nanfeng Barium Sulfate | Calcium Carbonate | Fumed Silica |
|---|---|---|---|
| Matting Efficiency | High (20–40 GU at 10% loading) | Moderate (40–60 GU) | High (10–30 GU) |
| Oil Absorption | 12–16 g/100g | 18–25 g/100g | 200–300 g/100g |
| Thermal Stability | 1,580°C | 800°C (decomposes) | 1,200°C |
| Cost Efficiency | $500–550/ton | $200–250/ton | $3,000–4,000/ton |
| Environmental Impact | Low carbon footprint | Moderate | High energy consumption |
Why Choose Nanfeng Barium Sulfate?
-
Technical Leadership
- 25+ years of R&D in precipitation and surface modification technologies.
- Customizable particle sizes (400–3,000 mesh) and coatings (silane, titanate).
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Supply Chain Excellence
- 40,000-ton annual capacity with ≤7-day lead time for global delivery.
- Dedicated technical support for formulation optimization.
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Sustainability Commitment
- Zero wastewater discharge and 90% recycled packaging materials.
- Carbon offset programs aligned with UN SDGs.
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Certifications & Compliance
- Full REACH, RoHS, UKCA, and TSCA compliance.
- Halal and Kosher certifications for specialized markets.
| Appearance | White powder |
| BaSO4 content | 98% min |
| 105°C volatile matter | 0.12 max |
| Water soluble matter | 0.13 max |
| Fe content | 0.0010 max |
| Whiteness | 97.9% min |
| Oil absorption | 15.6 |
| pH value | 7.4 |
| Sulfide content | 0.0014 max |
| D50 | 1.15 max |
| Conductivity | / |
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| Established | December 18, 2014 | ||
| Address | |||
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