Wufeng Weitai Barium Sulfate for Rubber WT-088 for High-Performance Rubber
Product Overview
Wufeng Weitai Barium Sulfate WT-088 is a specialized micronized barium sulfate engineered to enhance the mechanical properties, processability, and durability of rubber compounds across automotive, industrial, and consumer goods industries. With a tightly controlled particle size distribution (D50: 1.2–1.8 µm) and ultra-high purity (BaSO₄ ≥98.5%), this filler delivers 20–30% higher tensile strength, 15–25% improved abrasion resistance, and 40–50% lower compression set compared to conventional calcium carbonate or clay extenders.
Sourced from natural high-grade baryte ore in Hubei Province and refined through a zero-waste, ISO 9001-certified process, WT-088 optimizes rubber formulations for applications requiring extreme thermal stability (-50°C to 300°C), chemical resistance (pH 1–14), and dynamic load endurance. Its low oil absorption (14–18 g/100g) and hydrophobic surface treatment ensure seamless dispersion in SBR, NBR, EPDM, and silicone rubber matrices, reducing processing energy by 10–15% while maintaining cost efficiency.
Certified under REACH, RoHS, and ISO 14001, WT-088 is the sustainable choice for manufacturers prioritizing performance, regulatory compliance, and ESG goals.
Key Features & Competitive Advantages
Mechanical Reinforcement
- Tensile Strength: Enhances SBR/NBR tensile strength to 25–30 MPa at 20–30% loading (ISO 37).
- Tear Resistance: Improves die-c tear resistance by 35–40% in EPDM seals (ASTM D624).
- Compression Set: Reduces compression set to ≤15% (70h @ 150°C, ASTM D395).
Thermal & Chemical Resilience
- High-Temperature Stability: Withstands continuous operation at 250°C (short-term 300°C) in silicone rubber.
- Acid/Alkali Resistance: Maintains integrity after 168h immersion in 10% H₂SO₄ or NaOH (ASTM D471).
- Oil/Fuel Resistance: ≤10% volume swell in IRM 903 oil (ASTM D471).
Processing Efficiency
- Low Oil Absorption (14–18 g/100g): Redizes polymer demand by 12–15%, lowering formulation costs.
- Fast Dispersion: Achieves 95% Hegman fineness within 8–10 minutes (ASTM D2663).
- Mooney Viscosity Control: Maintains ML(1+4) @ 125°C below 50 for EPDM compounds (ASTM D1646).
Sustainability & Safety
- Heavy Metal-Free: Compliant with EU ELV Directive (Pb/Cd/As ≤5 ppm).
- Low Carbon Footprint: 0.8 kg CO₂/kg (50% below synthetic alternatives).
- Dust-Free Granules: OSHA-compliant with ≤0.2% respirable particles.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Chemical Composition | ||
| BaSO₄ Purity | ≥98.5% | XRF Analysis (ISO 29581) |
| Moisture Content | ≤0.3% | ISO 787-2 |
| Physical Properties | ||
| Particle Size (D50) | 1.2–1.8 µm | Laser Diffraction (ISO 13320) |
| Specific Gravity | 4.3–4.5 g/cm³ | ISO 787-10 |
| Oil Absorption | 14–18 g/100g | ISO 787-5 |
| Performance Data | ||
| pH (10% Slurry) | 6.5–7.5 | ISO 787-9 |
| Conductivity | ≤150 µS/cm | DIN 53779 |
| LOI (1,000°C) | ≤0.5% | TGA (ISO 11358) |
Application-Specific Benefits
1. Automotive Rubber Components
- Engine Mounts: Enhances vibration damping and fatigue resistance (10⁷ cycles @ 100°C).
- Tire Sidewalls: Improves ozone resistance (ASTM D1149) and flex cracking resistance (ASTM D430).
- Seals & Gaskets: Reduces compression set in NBR/HNBR compounds by 40% (ASTM D395).
2. Industrial Rubber Products
- Conveyor Belts: Boosts abrasion resistance (DIN 53516: ≤80 mm³ loss) and RMA Grade 1 compliance.
- Hydraulic Hoses: Withstands 3,000 psi impulse pressure (SAE J343) in synthetic rubber liners.
- Anti-Vibration Pads: Achieves 70–75 Shore A hardness with 15% lower dynamic stiffness.
3. Consumer & Specialty Rubber
- Silicone Kitchenware: FDA 21 CFR compliant for food contact applications.
- Medical Tubing: USP Class VI certification for biocompatibility.
- EV Battery Seals: Halogen-free, flame-retardant grades (UL94 V-0) for lithium-ion battery housings.
4. High-Performance Elastomers
- Fluoroelastomers (FKM): Extends service life in chemical processing seals (pH 1–14 compatibility).
- AEM/ACM Compounds: Enhances heat aging resistance (7-day @ 175°C: ΔTensile ≤20%).
Production Process & Quality Control
- Ore Selection: Natural baryte ore with ≤10 ppm heavy metals (XRF verified).
- Crushing & Grinding: Multi-stage jaw crushers and Raymond mills to 200-mesh.
- Purification: Acid-free flotation to remove silica (≤0.5%) and iron oxides (≤0.03%).
- Micronization: Wet grinding with zirconia beads to submicron fineness (D97 ≤5 µm).
- Surface Treatment: Stearic acid coating (1.0–1.5% w/w) for hydrophobic dispersion.
- Drying & Granulation: Spray drying + granulation for dust-free handling.
- Quality Assurance:
- ICP-MS for heavy metals (Pb/Cd/As ≤5 ppm).
- SEM analysis for particle morphology and dispersion.
- Batch-wise ISO 9001 certification.
Competitive Comparison: WT-088 vs. Alternatives
| Property | WT-088 Barium Sulfate | Precipitated CaCO₃ | Talc (Mg₃Si₄O₁₀(OH)₂) |
|---|---|---|---|
| Tensile Strength | 25–30 MPa | 15–20 MPa | 18–22 MPa |
| Heat Resistance | 250°C (continuous) | 120°C | 200°C |
| Acid Resistance | Excellent (pH 1–14) | Poor (pH <5) | Moderate (pH 4–9) |
| Mooney Viscosity | 45–50 ML(1+4) | 55–60 ML(1+4) | 50–55 ML(1+4) |
| Cost per Ton | $480–520 | $200–250 | $300–350 |
Why Choose Wufeng Weitai WT-088?
Technical Expertise
- Patented surface modification technology for optimized rubber-polymer interaction.
- Customizable particle sizes (0.8–5.0 µm) and coatings (silane, titanate).
Supply Chain Reliability
- 50,000-ton annual capacity with ≤7-day lead time for global shipments.
- On-site R&D support for formulation troubleshooting and optimization.
Sustainability Leadership
- 90% process water recycling and 100% renewable energy-powered production.
- Carbon-neutral logistics via rail and biofuel-powered fleets.
Certifications & Compliance
- Full REACH, UK REACH, Korea K-REACH, and Turkey CLP compliance.
- Halal, Kosher, and FDA certifications for specialized markets.
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| Company Name | Beijing TDD E-commerce Co., Ltd | البلد / المنطقة | China |
| نوع الأعمال | متجر عبر الإنترنت | حجم الشركة | 2000 |
| تأسس | December 18, 2014 | ||
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