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Calcined Kaolin for Coating Industry

Calcined Kaolin for Coating Industry

  • pH (28% solids): 6.0-7.0
  • Bulk Density (kg/m³): 420
  • Oil Absorption (g/100g): 58-63
  • ISO Brightness (%): 94.5 Min
  • Free Moisture @ 105°C (%): ≤0.5
  • Specific Gravity (g/cm³): 2.63

其他信息

Product Introduction

Calcined Kaolin is a high-brightness, fine-particle calcined kaolin specifically designed for the coating industry. It has excellent opacity, strong tint strength, low residue, and is easily dispersible. The calcination process results in enhanced properties that provide increased coverage and color strength, while the product’s low residue ensures improved surface finish and quality.

Product Features

  • High Brightness: Provides superior opacity and coverage in coatings.
  • Fine Particle Size: Enhances dispersion and mixing ability.
  • Low Residue: Ensures smoother finishes with minimal impurities.
  • Excellent Dispersion: Allows for uniform mixing with other coating components.
  • Improved Mechanical Properties: Enhances the durability of the coating, including moisture-proof and impact resistance.
  • UV Shielding: Protects coatings from UV damage, enhancing weather resistance, anti-corrosion, and heat and chemical resistance.

Product Specification

Property

Value

Physical Form

Highly Pulverized Powder
ISO Brightness (%)

94.5 Min

Screen Residue, 325 Mesh (%)

≤0.005
Free Moisture @ 105°C (%)

≤0.5

pH (28% solids)

6.0-7.0
Specific Gravity (g/cm³)

2.63

Sedigraph Particle Size (% <2μm)

76±2
Oil Absorption (g/100g)

58-63

Bulk Density (kg/m³)

420
Hegman

4.0 Min

Chemical Composition (%)

SiO2

Al2O3 Fe2O3 TiO2 K2O Na2O CaO MgO
52.0±1 45.0±1 ≤0.50 ≤0.80 ≤0.10 ≤0.20 ≤0.50

≤0.20

Product Application

Calcined Kaolin is widely used in the coating industry for its high brightness and fine particle size distribution. It enhances the opacity and gloss of coatings, improves brushability, and ensures stability, preventing layer separation after long storage. The product also improves the mechanical properties of the film, such as impact resistance and moisture-proof capabilities. Additionally, it shields coatings from UV rays, improving weather resistance, anti-corrosion, and heat, acid, and alkali resistance.

 

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