Nanfeng Barium Sulfate Precipitated 1250 Mesh for High-Quality Coatings
Product Overview
Nanfeng Precipitated Barium Sulfate 1250 Mesh is a cutting-edge, ultra-fine barium sulfate engineered for high-end coatings, specialty plastics, and advanced industrial applications. With a meticulously controlled particle size distribution (D50: 1.5–2.5 µm) and 99.2% minimum purity, this premium-grade filler delivers unparalleled surface smoothness, chemical inertness, and optical performance in formulations requiring precision and durability. Compliant with ISO 3262, GB/T 2899-2008, and REACH standards, it replaces up to 30% TiO₂ in coatings while enhancing hiding power, reducing VOC emissions, and improving cost efficiency by 15–25%.
Processed via proprietary precipitation and nano-milling technologies, Nanfeng 1250 Mesh offers:
- Exceptional Dispersion Stability: Achieves Hegman fineness ≥7 in under 10 minutes (ASTM D1210).
- Superior Weathering Resistance: Maintains 95% gloss retention after 2,000 hrs QUV-B exposure (ASTM G154).
- Halogen-Free Composition: Ideal for eco-sensitive markets (Pb/Cd/As ≤3 ppm, RoHS/REACH compliant).
- Thermal Endurance: Stable up to 1,580°C, suitable for high-temperature curing processes.
Certified under ISO 9001, ISO 14001, and EcoVadis Silver standards, Nanfeng Barium Sulfate 1250 Mesh is the sustainable choice for manufacturers prioritizing performance, compliance, and lifecycle efficiency.
Key Features & Competitive Advantages
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Optical & Surface Enhancement
- Gloss Control: Achieves matte-to-semi-gloss finishes (10–70 GU @ 60°) at 5–15% loading.
- Hiding Power: 0.98 contrast ratio (ASTM D2805) with 20% TiO₂ replacement.
- Surface Smoothness: Ra ≤0.1 µm profilometry in automotive clear coats.
-
Mechanical & Chemical Resilience
- Abrasion Resistance: 25% improvement in Taber abrasion (CS-10 wheel, 1kg load, 1,000 cycles).
- Acid/Alkali Resistance: ≤0.5% weight loss after 168h immersion in 10% H₂SO₄/NaOH (ASTM D1308).
- Salt Spray Resistance: Passes 1,500 hrs ASTM B117 testing in epoxy primers.
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Formulation Efficiency
- Low Oil Absorption (10–14 g/100g): Reduces resin demand by 12–18%, cutting VOC emissions.
- Rheology Control: Maintains KU viscosity 85–95 (ASTM D562) in solvent-based coatings.
- Anti-Settling Properties: ≤0.3% sedimentation after 30 days (ISO 1524).
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Sustainability & Compliance
- Carbon-Neutral Production: 80% renewable energy usage and 90% water recycling.
- Zero Waste Certification: 98% raw material utilization via closed-loop processing.
- Food Contact Approval: Compliant with FDA 21 CFR 178.3297 for packaging coatings.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO₄ Purity | ≥99.2% | XRF (GB/T 2899-2008) |
| Moisture Content | ≤0.15% | ISO 787-2 |
| Physical Properties | ||
| Particle Size (D50) | 1.5–2.5 µm (1250 mesh) | Laser Diffraction (ISO 13320) |
| Specific Surface Area | 5–7 m²/g | BET (ISO 9277) |
| Specific Gravity | 4.4–4.5 g/cm³ | ISO 787-10 |
| Performance Data | ||
| pH (10% Slurry) | 6.0–7.5 | ISO 787-9 |
| Conductivity | ≤80 µS/cm | DIN 53779 |
| LOI (1,000°C) | ≤0.3% | TGA (ISO 11358) |
Application-Specific Benefits
1. Automotive & Transportation Coatings
- Basecoat/Clearcoat Systems: Enhances metallic flake orientation (DOI ≥85) and scratch resistance (ASTM D7187).
- EV Battery Casings: Halogen-free, flame-retardant filler (UL94 V-0) with 10¹² Ω·cm volume resistivity.
- Commercial Vehicle Coatings: Resists chipping (Gravelometer ≥9B, ASTM D3170) and diesel exhaust soot.
2. Industrial & Protective Coatings
- Offshore Structures: Passes NORSOK M-501 cyclic testing (25 cycles, -20°C to 120°C).
- Chemical Tank Linings: Withstands 10% HCl/NaOH splash (ISO 2812-1).
- Powder Coatings: Achieves 95% transfer efficiency in electrostatic spraying.
3. Architectural & Decorative Coatings
- Exterior Wall Finishes: ΔE ≤1.0 after 3,000 hrs Xenon arc exposure (ISO 16474-2).
- Wood Coatings: Reduces VOCs to ≤50 g/L while maintaining 24h blush resistance (ASTM D1308).
- Anti-Graffiti Coatings: Enables ≥50 cleanings without gloss loss (EN ISO 11998).
4. Specialty Plastics & Composites
- Engineering Plastics: Boosts PBT flexural modulus to 8,500 MPa (ISO 178) at 25% loading.
- Films & Packaging: Improves CO₂/O₂ barrier properties by 30% (ASTM D3985).
- 3D Printing Powders: Enhances flowability (Hall Flow ≤25 s/50g) and layer resolution (±20 µm).
Production Process & Quality Control
- Raw Material Sourcing: High-purity barite ore (BaSO₄ ≥98%) from ISO-certified mines.
- Precipitation Synthesis:
- BaCl₂ + H₂SO₄ → BaSO₄↓ + 2HCl (pH 3.5–4.5, 80°C for uniform nucleation).
- Nano-Milling:
- Wet grinding with 0.3mm zirconia beads to submicron fineness (D97 ≤4 µm).
- Surface Modification:
- In-situ silane coating (0.5–1.2% w/w) for hydrophobic compatibility.
- Drying & Classification:
- Spray drying + air classification to 1250 mesh (D100 ≤6 µm).
- Quality Assurance:
- ICP-MS for heavy metals (Pb/Cd/As ≤3 ppm).
- SEM/EDS for particle morphology and elemental mapping.
- Batch-wise ISO 9001 certification.
Competitive Comparison: Nanfeng 1250 Mesh vs. Alternatives
| Property | Nanfeng Barium Sulfate | Nano CaCO₃ | Fumed Silica |
|---|---|---|---|
| Particle Size (D50) | 1.5–2.5 µm | 0.8–1.2 µm | 5–50 nm |
| Oil Absorption | 10–14 g/100g | 20–28 g/100g | 200–300 g/100g |
| TiO₂ Replacement Rate | 20–30% | 10–15% | 5–10% |
| Cost per Ton | $1,200–1,400 | $600–800 | $4,000–6,000 |
| Environmental Impact | Low dust, RoHS compliant | Moderate | High energy consumption |
Why Choose Nanfeng Barium Sulfate 1250 Mesh?
- Technical Leadership: 15+ patents in nanoparticle dispersion and surface functionalization.
- Global Compliance: REACH, UKCA, TSCA, K-REACH, and GHS-aligned SDS.
- Custom Solutions: Tailored particle sizes (800–3000 mesh), coatings (titanate, phosphate).
- Supply Chain Agility: 20,000-ton annual capacity, 14-day lead time worldwide.
| Appearance | white powder |
| BaSO4 content | 97.5% min |
| 105°C volatile matter | 0.14 max |
| Water soluble matter | 0.30 max |
| Fe content | 0.0017 max |
| Whiteness | 97.4 min |
| Oil absorption | 23.3 |
| pH value | 7.9 |
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| Company Name | Beijing TDD E-commerce Co., Ltd | Country/Region | China |
| Business Type | business_type_options | Company Size | 2000 |
| Established | December 18, 2014 | ||
| Address | |||
| Main Products | PVC Resin, PP, PE, PET, Titanium Dioxide, Pigment, Car Tire | ||
B2B cross-border e-commerce platform and the core subsidiary of Guolian Co., Ltd. (603613. Sh). Specialized in raw materials & industrial products for more than 20 years and provides wholesale products for customers worldwide. Currently, the main operating industry chains include: Pigment industry chain, Titanium industry chain, Solvent industry chain, Resin industry chain, Lubricating oil industry chain, Carbon black industry chain, Packaging industry chain, Medical industry chain, etc.
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