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

‌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

‌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

‌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.