Strong Covering Power 4000 Mesh Calcined Kaolin - High Coverage for Paints and Coatings
Product Overview
Strong Covering Power 4000 Mesh Calcined Kaolin is a high-performance engineered mineral filler designed to maximize opacity and functional efficiency in waterborne, solvent-borne, and powder coatings. Produced through precision calcination (850–950°C) and advanced particle classification, this ultra-fine kaolin (D97 ≤5μm / 4000 mesh) delivers 92% ISO brightness and 1.55 refractive index, achieving TiO₂ extension rates of 15–30% while maintaining equivalent hiding power. Its unique platelet morphology and surface activation ensure superior dispersion stability, film reinforcement, and corrosion inhibition, making it ideal for architectural paints, industrial coatings, adhesives, and specialty polymer composites. Compliant with REACH, FDA 21 CFR 178.3297, and ISO 3262 standards, this kaolin sets new benchmarks in sustainable formulation design.
Technical Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Particle Size (D97) | ≤5 μm (4000 mesh) | ISO 13320 (Laser Diffraction) |
| Brightness (ISO) | ≥92% | ISO 2470 |
| Refractive Index | 1.55–1.57 | ASTM D542 |
| Oil Absorption | 45–55 g/100g | ASTM D281 |
| pH Value | 5.0–7.0 | ISO 787-9 |
| Specific Gravity | 2.58–2.63 | ASTM D854 |
| Residue on 325 Mesh | ≤0.02% | ISO 3267 |
| Loss on Ignition (LOI) | ≤1.0% | ISO 3262-1 |
| Moisture Content | ≤0.5% | ISO 787-2 |
| Surface Area (BET) | 18–22 m²/g | ISO 9277 |
Core Performance Advantages
1. Unmatched Opacity Enhancement
- Light Scattering Optimization:
- Platelet aspect ratio 25:1 vs. 8:1 in standard kaolins.
- Achieves 89% contrast ratio at 35 PVC (vs. 72% for GCC).
- TiO₂ Extender Efficiency:
Replacement Level Hiding Power Retention Cost Savings 15% TiO₂ substitution 98% 12–18% 25% TiO₂ substitution 92% 20–28% 30% TiO₂ substitution 85% 30–35%
2. Reinforcement & Durability
- Film Strengthening:
- Increases pencil hardness by 1–2 grades (ASTM D3363).
- Reduces mud-cracking in 100μm thick films by 80%.
- Corrosion Protection:
Test Condition Performance Salt Spray (ASTM B117) 1,000 hours Rust creep ≤1.0mm Humidity Resistance 85°C/85% RH, 60 days Adhesion retention ≥95%
Advanced Calcination Technology
1. Thermal Activation Process
- Stage 1 – Dehydroxylation:
- Controlled heating at 550–650°C removes structural water, enhancing porosity.
- Stage 2 – Phase Transformation:
- Metakaolin formation at 750–850°C optimizes platelet crystallinity.
- Stage 3 – Mullite Development:
- High-temperature sintering (900–950°C) creates durable ceramic phases.
2. Surface Modification
- Organosilane Treatment:
- Reduces oil absorption to 48 g/100g (vs. 65 g/100g untreated).
- Improves compatibility with non-polar resins (contact angle ≤25°).
- Zirconium Coating:
- Enhances UV reflectance by 15% (300–400 nm range).
Application-Specific Benefits
1. Architectural Coatings
- Exterior Latex Paints:
- Achieves 98% dirt pickup resistance (ASTM D3719).
- Reduces efflorescence risk in high-humidity environments.
- Interior Emulsions:
- 92% LRV (Light Reflectance Value) for cool wall effects.
- VOC-free formulation compatibility (≤0.5% water-soluble ions).
2. Industrial Protective Coatings
- Epoxy Tank Linings:
- Chemical resistance: 28-day immersion in 10% HCl shows ≤5% weight gain.
- Abrasion resistance: 50 mg loss (Taber Abraser, CS-10 wheel, 1kg load).
- Zinc-Rich Primers:
- Maintains 85% electrical conductivity at 30% loading.
3. Specialty Applications
- Fire-Retardant Coatings:
- Acts as ceramifying agent, achieving 120-minute fire rating (UL 263).
- Anti-Corrosive Inks:
- Enables 150 μm print thickness without sagging.
Sustainability Profile
1. Carbon Footprint Reduction
- Energy-Efficient Production:
Process CO₂ Emission (ton/ton product) Traditional Calcination 0.85 Our Advanced Kiln Technology 0.52 (-39%)
2. Circular Economy Contribution
- Post-Consumer Recyclate Compatibility:
- Allows 40% PCR plastic integration in masterbatches.
- End-of-Life Benefits:
- 100% inert mineral content, landfill-safe.
Competitive Analysis
| Property | Our 4000 Mesh Kaolin | Standard Calcined Clay | Calcium Carbonate |
|---|---|---|---|
| Refractive Index | 1.55 | 1.52 | 1.49 |
| TiO₂ Replacement Potential | 25–30% | 10–15% | 5–8% |
| Abrasion Resistance | 8 Mohs | 6 Mohs | 3 Mohs |
| Acid Resistance | pH 2–12 stable | pH 4–10 stable | pH 5–9 stable |
| Cost per Opacity Unit | $0.18 | $0.27 | $0.35 |
Quality Assurance & Certifications
- Production Standards:
- ISO 9001:2015 certified manufacturing.
- Responsible Minerals Initiative (RMI) compliant.
- Safety Certifications:
- EU Ecolabel, TSCA compliant.
- SDS available in 12 languages.
Packaging & Logistics
| Package Type | Weight | Features |
|---|---|---|
| Multi-layer Paper Bags | 25 kg | Moisture-proof, palletized |
| Bulk Super Sacks | 1,000 kg | UV-resistant, FIBC certified |
| Customized Container | 25,000 kg | Dedicated silo discharge system |
Global Stock Availability:
- European Hub: Rotterdam – 5,000 MT ready stock.
- Asia-Pacific: Singapore – 8,000 MT monthly turnover.
- Americas: Houston – 3,500 MT buffer inventory.
Technical Support Services
- Formulation Optimization: Lab-scale DOE studies for TiO₂ extension.
- Troubleshooting: SEM-EDS analysis of coating defects.
- Custom Grinding: Adjustable particle size distribution (D50 1–15μm).
Conclusion
Strong Covering Power 4000 Mesh Calcined Kaolin redefines mineral filler performance through precision engineering and sustainable production practices. Its unique combination of ultra-fineness, platelet morphology, and surface activation delivers unparalleled opacity enhancement, mechanical reinforcement, and formulation flexibility across coating technologies. By enabling significant TiO₂ reduction without sacrificing coverage, this product addresses critical industry challenges of cost control and environmental compliance. Backed by global logistical support and technical expertise, it empowers formulators to develop next-generation coatings that meet evolving market demands for performance, durability, and eco-efficiency.
| 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 | ||
| International Commercial Terms(Incoterms): | FOB, CFR, CIF, FCA | ||
| Terms of Payment: | LC, T/T, D/P | ||
| Average Lead Time: | Peak Season Lead Time: one month, Off Season Lead Time: within 15 workdays | ||
| Number of Foreign Trading Staff: | 20~40 People | ||
| Main Markets: | Southeast Asia, Africa, Mid East | ||
| Nearest Port: | Tianjin,Qingdao,Shanghai | ||
| Import & Export Mode: | Have Own Export License | ||
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.
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of quot&quality first, customer first and credit-based"Since the establishment of the company and always do our best to satisfy potential needs of our customers.
Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with an irresistible force. |
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Our Advantages:
Rich Experience-over 20 years in industry field
Ranges of products categories with quality guarantee
Competitive&Favourable price
7*24hours thoughtful pre-sale, on-sale, after-sale service
Overseas warehouse with all time delivery
Our services:
In order to better satisfy our customers worldwide and maintain regular customers. Our company takes raw material&industrial product B2B e-commerce transaction service, digital supply chain service, industry digitization service and industry data service as it′s primary business, focusing on promoting the deep integration between new technology and traditional industry, such as Internet, Internet of things, big data, intelligent manufacturing and blockchain.
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