1250 Mesh Modified Ultrafine Precipitated Barium Sulfate - Ultra-Fine Powder for Coatings
Product Overview
Modified Ultrafine Precipitated Barium Sulfate represents a next-generation functional filler engineered through advanced crystallization and surface modification technologies. Unlike conventional barium sulfate, this ultrafine variant combines nano-scale particle control (D50: 0.2–0.5 μm) with organosilane coupling agents to deliver unparalleled dispersion stability, interfacial adhesion, and process adaptability across coatings, polymers, and specialty chemical formulations. Certified to ISO 3262-7 standards, it achieves 98% purity with <50 ppm heavy metal content, making it ideal for applications demanding both performance excellence and regulatory compliance (REACH/ROHS/GB9685).
Enhanced Technical Properties
1. Particle Morphology Optimization
- Ultrafine particle engineering:
- Primary particle size: 0.1–0.8 μm (SEM verified)
- Narrow distribution: Span value <1.2 (D90/D10 ratio)
- Spherical-aggregate morphology reduces abrasion wear
- Surface treatment innovations:
- Dual-layer modification: Silane + stearic acid coating
- Contact angle: ≤15° (hydrophilic) or ≥120° (hydrophobic variants)
2. Performance Advantages vs. Standard BaSO₄
| Property | Modified Ultrafine Grade | Conventional Grade |
|---|---|---|
| Oil Absorption | 10–12 g/100g (ASTM D281) | 15–20 g/100g |
| BET Surface Area | 8–12 m²/g | 4–6 m²/g |
| Dispersibility Index | Hegman 7+ (30 min grinding) | Hegman 5–6 |
| Zeta Potential | -35mV ±5 (pH 7.0) | -15mV ±8 |
Specialized Packaging & Handling Protocol
1. Advanced Packaging Solutions
- Primary packaging:
- 25kg laminated polyethylene inner bag
- Triple-seam heat sealing (ISO 2230 compliant)
- Secondary packaging:
- Option A: UV-resistant PP woven bag (120g/m²) with machine-stitched closure
- Option B: 5-layer kraft paper bag (500gsm) with water-repellent coating
- Palletization:
- 40 bags/pallet (1,000kg) with stretch film & corner protectors
2. Storage & Logistics Guidelines
- Warehousing requirements:
- Temperature: 10–30°C (50–86°F)
- Humidity: ≤60% RH (desiccant packets included)
- Separation: Minimum 1m from acids/oxidizers
- Shelf life:
- 36 months in original packaging (accelerated aging tested per ASTM F1980)
Critical Handling Precautions
1. Operational Safety
- Dust control:
- Use local exhaust ventilation (LEV) during transfer
- OSHA PEL: 15mg/m³ (total dust), 5mg/m³ (respirable fraction)
- Fire prevention:
- Non-combustible (NFPA 704: 0-0-1 rating)
- Ground containers during filling to prevent static
2. Quality Preservation
- Moisture protection:
- Reseal opened bags with vacuum clamp immediately
- Critical moisture threshold: >0.5% causes agglomeration
- Contamination avoidance:
- Dedicated stainless steel scoops/tools required
- ISO Class 7 (10,000级) environment recommended
Multidisciplinary Applications
I. High-Performance Coatings
- Automotive OEM Finishes
- Electrophoretic primers: 15–25% loading reduces cratering
- Metallic basecoats: Enhances flake orientation (DOI >90)
- Marine Antifouling Systems
- Cuprous oxide carrier in SPC coatings (IMO compliant)
- 40% reduction in biocide leaching rate
II. Engineering Plastics
| Polymer Matrix | Benefits | Typical Loading |
|---|---|---|
| PBT/PET | Improves CTI >600V (UL 746A) | 30–40% |
| Nylon 6/66 | Reduces warpage (0.2% vs 1.5%) | 25–35% |
| Thermoplastic PU | Enhances abrasion resistance (Taber ≤30mg) | 15–25% |
III. Specialty Chemical Formulations
- Lithium-Ion Batteries
- Cathode slurry stabilizer (LiFePO₄ systems)
- Reduces binder content by 20% while maintaining adhesion
- Inkjet Receptive Layers
- Microporous structure improves ink drying speed (3x faster)
- Maintains 98% color gamut in pigment-based inks
Formulation Guidelines
1. Optimal Incorporation Methods
- Dry blending:
- Premix with polymer pellets (1:2 ratio) before extrusion
- Twin-screw compounding: Zone 1 temp ≤180°C
- Wet dispersion:
System Dispersant Recommendation Waterborne coatings Polyacrylate ammonium salt (0.3–0.8%) Solvent-based inks Hyperbranched polyester (0.5–1.2%) UV-curable resins Silicone acrylate (0.1–0.3%)
2. Compatibility Matrix
| Resin Type | Adhesion Improvement | Critical Notes |
|---|---|---|
| Epoxy | 35–50% (ASTM D4541) | Pre-dry at 80°C for moisture-sensitive systems |
| Alkyd | 20–30% | Avoid overgrinding – max 1,500rpm |
| Fluoropolymer | 15–25% | Requires hydrophobic modification |
Quality Assurance & Certifications
1. Analytical Testing
- Particle characterization:
- SEM-EDS for elemental mapping
- XRF for BaSO₄ purity verification
- Performance validation:
- QUV-B 500h gloss retention ≥85%
- 50-cycle thermal shock (-40°C↔85°C)
2. Compliance Documentation
- Safety: SDS compliant with GHS Rev.10
- Food contact: FDA 21 CFR 178.3297
- Sustainability: GRAS designation, Carbon footprint ≤1.2kg CO₂/kg
Technical Support Services
- Application development:
- DOE (Design of Experiments) for optimal loading ratios
- Rheology modeling using MFi vs. filler content curves
- Troubleshooting:
- FTIR analysis of interface bonding failures
- Cross-section SEM for dispersion evaluation
Competitive Advantages
- Zero VOC Contribution: Water-washed production process
- Global Supply Chain: FDA-approved facilities in 3 continents
- Custom Modification: Tailored surface energy (20–50mN/m)
- Batch Consistency: Six Sigma controlled (Cpk≥1.67)
Conclusion
This modified ultrafine precipitated barium sulfate redefines functional filler performance through precision engineering at the nanoscale. Its unique combination of particle size control, surface functionality, and chemical purity enables formulators to overcome traditional limitations in opacity development, mechanical reinforcement, and process efficiency. Whether enhancing the scratch resistance of automotive clearcoats or improving the dimensional stability of engineering plastics, this advanced material delivers measurable performance gains while reducing total system costs. Backed by comprehensive technical support and global regulatory compliance, it stands as the intelligent choice for next-generation material science challenges.
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| Company Name | Beijing TDD E-commerce Co., Ltd | Country/Region | China |
| Business Type | Online Store | Company Size | 2000 |
| Established | December 18, 2014 | ||
| Address | Building No.3, Area 6, No.188, West of South Forth Ring Rd, Beijing, China | ||
| Main Products | PVC Resin , PP , PE , Pet , Titanium Dioxide , Pigment , Car Tire | ||
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About Beijing United Information Technology Co., Ltd.
Beijing United Information Technology Co., Ltd. (Stock Code: 603613. SH), founded in 2002 and listed on the Main Board in July 2019, is mainly engaged in industrial e-commerce and industrial Internet platforms. Based on industrial e-commerce and supported by industrial big data and industrial digitalization, the company provides online commodity trading, business information services and digital technology services of industrial products and raw materials for related industries. In terms of business model, it is called "the industrial version of Pinduoduo" and "the industrial version of JD.com".
About Beijing TDD E-commerce Co., Ltd.
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Beijing TDD E-commerce Co., Ltd. (shortly named TDD Global) is the core subsidiary of Guolian Corporation (Stock Code: 603613.SH) and the first industrial Internetplatform of Duoduo Series Platforms. The company mainly engages in B28 e-commerce transaction serices of raw material and industrial products, digital supply chain serices, industrial digitalization serices and industrial big data serices, and is committed to promoting the deep integration of traditional industries and new technologies such as the Internet, Internet of Things, big data, intelligent manufacturing and block chain, etc.
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