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Alumina Filler Powder for Coating Applications

This product is a high-purity aluminum oxide (Al2O3) filler powder, designed specifically for high-end coatings, anti-corrosion coatings, and special paints. It offers excellent weather resistance, high hardness, and chemical stability. Through fine classification processes, the particle size (D50 2-50μm adjustable) is precisely controlled to significantly enhance the wear resistance, corrosion resistance, and mechanical strength of coatings, while maintaining excellent dispersibility and application performance.

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Product Description

Product Description
This product is a high-purity aluminum oxide (Al ₂O ₃) filler powder, designed specifically for high-end coatings, anti-corrosion coatings, and special paints. It offers excellent weather resistance, high hardness, and chemical stability. Through fine classification processes, the particle size (D50 2-50μm adjustable) is precisely controlled to significantly enhance the wear resistance, corrosion resistance, and mechanical strength of coatings, while maintaining excellent dispersibility and application performance.

Core Advantages
Enhances coating hardness - Mohs hardness level 8, significantly improving wear resistance
Resistant to acid and alkali corrosion - Strong chemical inertness, suitable for harsh environments
Customizable particle size (2-50μm) - Meets requirements for different coating thicknesses
High whiteness (≥90%) - Does not affect coating color, suitable for light-colored systems
Low oil absorption value - Reduces resin usage and lowers formulation costs
Excellent dispersibility - Good compatibility with various resins (epoxy/polyurethane/acrylic)

Typical Applications
Industrial anti-corrosion coatings: Corrosion protection for chemical equipment and offshore platforms
Wear-resistant floor paints: Wear-resistant coatings for factory workshops and parking lots
High-temperature coatings: Heat-resistant protective layers for boilers, chimneys, etc.
Special decorative paints: Metallic effect paints, sand texture paints
Coil coatings: Pre-coating for colored steel plates

Why Choose Us?
Strict quality control - Compliant with ISO 9001 standards, ensuring high batch stability
Technical support - Provides particle size matching suggestions and formulation optimization solutions
Customization services - Supports surface modification (silane/titanate coupling agent treatment)
Fast delivery - Regular specifications available from stock, supporting small-batch trial orders

Packaging and Transportation
Standard packaging: 25kg/bag (customizable)
Transportation methods: Sea/land transport available, supporting global exports

Inquiry Tips
Free samples and technical data sheets (TDS) provided

Supports customized particle size distribution and surface treatment processes as needed

Quality Index

Serial Number	Project	Unit	Index
Serial Number	Project	Unit	YJ-A	YJ-B
1	AL₂O₃	%≥	99.5	99.5
2	SiO₂	%≤	0.10	0.10
3	Fe₂O₃	%≤	0.03	0.04
4	Na₂O	%≤	0.10	0.20
5	Caustic soda	%≤	1.0	1.0
6	α-AL₂O₃	%≥	96.0	95.0
7	True proportion	%≥g/cm3	3.96	3.94
8	Particle size%	≤2um	≥90	≥85
8	Particle size%	D50um	≥0.60	≥0.80