1250 Mesh High Whiteness Calcined Kaolin - Superior Whiteness for Coating and Plastic Applications
Product details:
| Trade name | 1250 mesh calcined kaolin |
| Article No. | tdd003468 |
| Hazardous chemicals | no |
| Package specification | 25kg per package |
| Mesh | 1250 mesh |
Introduction
Calcined kaolin, a thermally processed variant of natural kaolin, has emerged as a critical material in high-performance industrial applications due to its enhanced optical, mechanical, and chemical properties. 1250 Mesh High Whiteness Calcined Kaolin represents a premium-grade product designed to meet the exacting standards of modern coatings, plastics, and specialty industries. Through controlled calcination at elevated temperatures, this kaolin undergoes structural transformation, achieving unparalleled brightness, reduced impurities, and optimized particle morphology. With a fine particle size of 1250 mesh (approximately 10–12 µm) and a GE brightness exceeding 93–97%, this material is engineered to deliver superior opacity, dispersion, and reinforcement in diverse formulations.
Key Characteristics
1. Exceptional Whiteness and Brightness
The hallmark of this product is its ultra-high whiteness, achieved through advanced calcination processes that remove organic impurities and iron oxides. With a GE brightness of 93–97%, it outperforms conventional hydrated kaolin, making it ideal for applications requiring:
- Brighter coatings and paints: Enhances color vibrancy and reduces the need for costly TiO₂.
- Aesthetic plastics: Provides a clean, white base for translucent or colored polymer products.
- Premium paper coatings: Delivers high print contrast and gloss.
2. Ultra-Fine Particle Size (1250 Mesh)
The precisely controlled 1250 mesh particle size (10–12 µm) ensures a balance between surface area and packing density, delivering:
- Improved dispersion: Reduces agglomeration in liquid and polymer matrices.
- Smooth finish: Ideal for thin-film coatings and precision plastic components.
- Enhanced reinforcing properties: Boosts tensile strength and impact resistance in composites.
3. Thermal Activation and Structural Modification
Calcination at 950–1050°C induces dehydroxylation, transforming kaolinite into metakaolin (amorphous phase) and subsequently mullite (crystalline phase) for specialized applications. This process enhances:
- Opacity and scattering efficiency: Critical for replacing TiO₂ in cost-sensitive formulations.
- Chemical inertness: Resists acids, alkalis, and solvents in harsh environments.
- Thermal stability: Withstands processing temperatures up to 1200°C in composites and ceramics.
4. Low Moisture and Oil Absorption
Calcined kaolin exhibits <0.5% moisture content and 40–60 g/100g oil absorption, ensuring compatibility with hydrophobic systems like plastics and resins. This minimizes processing issues such as:
- Void formation in extruded plastics.
- Viscosity fluctuations in solvent-based coatings.
- Caking during storage and handling.
5. Surface Modification Capabilities
To optimize compatibility with organic polymers, the kaolin can be treated with:
- Silane coupling agents: Improves adhesion in reinforced plastics.
- Fatty acid coatings: Enhances dispersion in PVC and polyolefins.
- Cationic modifiers: Tailored for water-based coatings and adhesives.
Industrial Applications
1. Paints and Coatings
1250 mesh calcined kaolin is a game-changer in decorative, industrial, and protective coatings:
- TiO₂ Extender: Reduces pigment costs by up to 20% while maintaining opacity and UV resistance.
- Functional Filler: Improures scrub resistance in latex paints and anti-corrosion properties in primers.
- Matting Agent: Delivers consistent low-gloss finishes in wood and automotive coatings.
- Rheology Control: Stabilizes viscosity in high-solids and powder coatings.
2. Plastics and Polymers
In plastics, calcined kaolin acts as a multifunctional additive:
- Reinforcement: Increases stiffness and heat deflection temperature (HDT) in nylon and PET.
- Dimensional Stability: Reduces warpage in injection-molded components.
- Flame Retardancy: Synergizes with halogen-free systems in wire and cable insulation.
- Surface Smoothing: Eliminates surface defects in blown films and extruded profiles.
3. Rubber and Elastomers
The material enhances performance in rubber products:
- Abrasion Resistance: Extends tire tread life.
- Tensile Strength: Reinforces conveyor belts and seals.
- Processability: Reduces mixing time and energy consumption.
4. Cosmetics and Pharmaceuticals
High purity and brightness make it suitable for:
- Face Powders and Foundations: Provides a silky, non-comedogenic texture.
- Sunscreens: Enhances SPF efficacy through UV scattering.
- Tablet Coatings: Ensures uniform drug release and aesthetic appeal.
5. Advanced and Niche Applications
- Ceramics: Used in high-strength technical ceramics and electronic substrates.
- Adhesives and Sealants: Improves bond strength and thermal resistance.
- 3D Printing: Serves as a filler in photopolymer resins for improved resolution.
Technical Specifications
| Parameter | Specification |
|---|---|
| Particle Size (Mesh) | 1250 (10–12 µm) |
| Brightness (GE) | 93–97% |
| Loss on Ignition (LOI) | ≤1.5% |
| Moisture Content | ≤0.5% |
| pH (10% Slurry) | 5.0–7.5 |
| Oil Absorption | 40–60 g/100g |
| Specific Gravity | 2.50–2.65 |
| Refractive Index | 1.56–1.62 |
Packaging and Logistics
To preserve product quality, the kaolin is supplied in:
- 25 kg multi-wall paper bags with inner polyethylene liners.
- 500 kg or 1-ton FIBCs (jumbo bags) equipped with dust-free spouts.
- Bulk silo trucks for large-scale industrial users.
Customized packaging, including vacuum-sealed or moisture-proof options, is available upon request.
Quality Assurance and Compliance
Our production facilities adhere to globally recognized standards:
- ISO 9001:2015 for quality management.
- ISO 14001:2015 for sustainable manufacturing.
- REACH and FDA compliant for food-contact and cosmetic applications.
Each batch is accompanied by a Certificate of Analysis (CoA) detailing particle size distribution, chemical composition, and performance metrics.
Sustainability and Eco-Friendly Practices
We prioritize environmental responsibility through:
- Energy-Efficient Calcination: Utilizing gas-fired rotary kilns with heat recovery systems.
- Zero-Waste Mining: Overburden materials repurposed for road construction and land rehabilitation.
- Carbon Offset Initiatives: Partnering with reforestation programs to neutralize emissions.
Why Choose Our 1250 Mesh Calcined Kaolin?
- Performance-Driven Design: Tailored for coatings and plastics with unmatched brightness.
- Technical Expertise: Dedicated R&D support for formulation optimization.
- Global Supply Chain: Efficient logistics across North America, Europe, and Asia.
- Cost Savings: Reduces reliance on expensive pigments like TiO₂.
Conclusion
1250 Mesh High Whiteness Calcined Kaolin redefines the benchmarks for functional fillers in coatings, plastics, and beyond. Its combination of ultra-fineness, stellar brightness, and thermal stability empowers manufacturers to create high-quality, sustainable products while reducing costs. Whether enhancing the durability of automotive coatings, the aesthetics of premium plastics, or the performance of advanced materials, this calcined kaolin is engineered to excel in the most demanding environments.
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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 | ||
| International Commercial Terms(Incoterms): | FOB, CFR, CIF, FCA | ||
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| 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.
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