Huachuang Barium Sulfate Precipitated for Anticorrosive Paint 325 Mesh
Product Overview
Huachuang Precipitated Barium Sulfate 325 Mesh is a premium-grade functional filler engineered specifically for anti-corrosive coatings in demanding industrial environments. With a controlled particle size distribution (D50: 40–50 µm) and 98.5% minimum purity, this product delivers exceptional chemical resistance, mechanical reinforcement, and cost efficiency in formulations exposed to saltwater, acids, alkalis, and extreme weather. Certified under ISO 3262, GB/T 2899-2008, and REACH standards, it is the ideal choice for marine, petrochemical, and infrastructure coatings requiring robust protection and compliance.
Key benefits include:
- Superior Corrosion Inhibition: Extends coating service life by 30–50% in salt spray (ASTM B117) and cyclic corrosion tests.
- Optimized Rheology: Low oil absorption (16–20 g/100g) reduces resin demand by 10–15%, lowering VOC emissions.
- Halogen-Free Chemistry: Compliant with RoHS/ELV directives (Pb/Cd/As ≤5 ppm).
- Thermal Stability: Withstands temperatures up to 1,580°C, suitable for high-temperature curing systems.
Key Features & Technical Advantages
1. Corrosion Resistance & Barrier Protection
- Salt Spray Performance: 2,000+ hours without blistering or undercutting (ISO 9227).
- Acid/Alkali Resistance: ≤1% mass loss after 30 days in 20% H₂SO₄/NaOH (ISO 2812-1).
- Water Permeability: Reduces H₂O transmission by 40% vs. calcium carbonate fillers (ASTM E96).
2. Mechanical Reinforcement
- Adhesion Boost: Cross-cut adhesion ≥4B (ASTM D3359) at 15–25% loading.
- Abrasion Resistance: 20% lower wear volume than quartz fillers (Taber test, CS-17 wheel, 1kg/1,000 cycles).
- Impact Resistance: Passes 50 kg·cm direct impact test (ISO 6272).
3. Formulation Flexibility
- Universal Compatibility: Disperses evenly in epoxy, polyurethane, alkyd, and acrylic systems.
- Anti-Settling Stability: ≤0.5% sedimentation after 60 days (ISO 1524).
- Color Neutrality: ΔE ≤0.5 in white/light-colored coatings (ASTM D2244).
4. Sustainability & Compliance
- Low-Carbon Production: 70% renewable energy usage in manufacturing.
- Zero Wastewater: Closed-loop water recycling system.
- Global Certifications: REACH, UKCA, KC Mark, and GHS-aligned SDS.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO₄ Purity | ≥98.5% | XRF (GB/T 2899-2008) |
| Moisture Content | ≤0.2% | ISO 787-2 |
| Physical Properties | ||
| Particle Size (D50) | 40–50 µm (325 mesh) | Sieve Analysis (ISO 8130-1) |
| Specific Gravity | 4.3–4.4 g/cm³ | Pycnometer (ISO 787-10) |
| Oil Absorption | 16–20 g/100g | ISO 787-5 |
| Performance Data | ||
| pH (10% Slurry) | 6.5–7.5 | ISO 787-9 |
| Conductivity | ≤100 µS/cm | DIN 53779 |
| LOI (1,000°C) | ≤0.5% | TGA (ISO 11358) |
Applications in Anti-Corrosive Coatings
1. Marine & Offshore Coatings
- Ship Hulls: Reduces fouling adhesion by 30% in silicone-modified epoxies.
- Offshore Platforms: Passes NORSOK M-501 cyclic testing (-25°C to 120°C, 30 cycles).
- Ballast Tanks: Extends recoating intervals to 15+ years (IMO PSPC compliance).
2. Petrochemical & Industrial Coatings
- Chemical Storage Tanks: Resists 98% H₂SO₄ spillage (ISO 2812-1).
- Pipeline Coatings: Withstands 10,000+ psi cathodic disbondment (ASTM G8).
- Refinery Equipment: Halts chloride-induced stress corrosion cracking (NACE TM0177).
3. Infrastructure & Automotive Coatings
- Bridges: Achieves C5-M corrosion resistance (ISO 12944).
- Commercial Vehicles: 500+ hours resistance to de-icing salts (SAE J2334).
- Wind Turbines: Prevents pitting corrosion in coastal installations (IEC 61400-6).
4. Primer & Intermediate Coatings
- Zinc-Rich Primers: Enhances electrical conductivity (1–5 Ω·cm) for galvanic protection.
- Epoxy Mastics: Fills weld seams and surface defects up to 500 µm DFT.
- Inorganic Zinc Silicates: Improves hardness to 5H (ASTM D3363) at 30% loading.
Production Process & Quality Control
- Raw Material Selection: High-grade barite ore (BaSO₄ ≥97%) from audited mines.
- Precipitation Reaction:
- BaCl₂ + Na₂SO₄ → BaSO₄↓ + 2NaCl (pH 4.0–5.0, 70°C for uniform crystallization).
- Filtration & Washing:
- Removes chloride ions to ≤50 ppm (ion chromatography).
- Drying & Classification:
- Rotary drying + air classification to 325 mesh (D97 ≤75 µm).
- Quality Assurance:
- SEM analysis for particle morphology.
- ICP-OES for heavy metal verification (Pb/Cd/As ≤5 ppm).
- Batch-specific COA with ISO 9001 traceability.
Competitive Comparison
| Property | Huachuang BaSO₄ 325 Mesh | Calcium Carbonate | Talc |
|---|---|---|---|
| Density (g/cm³) | 4.3–4.4 | 2.7–2.9 | 2.8–3.1 |
| Acid Resistance | Excellent (pH ≥1) | Poor (dissolves at pH <5) | Moderate (pH ≥3) |
| Cost per Ton | $600–800 | $200–300 | $400–600 |
| Adhesion Enhancement | 4B (ASTM D3359) | 2B | 3B |
| Environmental Impact | RoHS compliant, low dust | High CO₂ footprint | Potential asbestos risk |
Why Choose Huachuang Barium Sulfate 325 Mesh?
- Proven Corrosion Protection: 20+ years of field data in marine and chemical environments.
- Cost Efficiency: Replaces 15–25% of premium resins and anti-corrosive pigments.
- Technical Support: Custom formulation optimization for specific SSPC/NACE standards.
- Supply Chain Reliability: 50,000-ton annual capacity, 10-day lead time globally.
| BaSO4 | 98% min |
| Whiteness | 97 min |
| Gravity | 4.2 |
| Oil absorption | 16 |
| Water soluble matter | 0.2% max |
| Acid soluble matter | 0.6% max |
| Sulfide | 0.003% max |
| pH value | 6.5-7.5 |
| Fe | 0.003% max |
| Moisture | 0.2% max |
| Mesh | 325 |
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About Beijing TDD E-commerce Co., Ltd.
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