White Corundum in Wear-Resistant Paint
White corundum (white fused alumina, mainly α‑Al₂O₃) is a high-performance functional filler widely used in wear-resistant coatings. It greatly improves mechanical properties and service life of the paint film.
Technical Data Sheet for Wear-Resistant Paint
1. Product Overview
- Product Name: White Corundum Micro Powder / White Fused Alumina
- Chemical Composition: Mainly α-Al₂O₃, ≥99.0%
- Hardness: Mohs 9
- Color: White, high whiteness, no yellowing
- Shape: Angular particles, good interlocking
2. Key Functions in Wear-Resistant Paint
- Significantly improve abrasion resistance, scratch resistance and impact resistance
- Form a rigid skeleton in the paint film to resist friction and erosion
- Increase film hardness and compactness, reduce permeability
- Improve adhesion between coating and substrate
- Chemically inert: good acid resistance, alkali resistance and corrosion resistance
- High temperature resistance and weather resistance, reduce aging and chalking
- High whiteness, suitable for light‑colored, high‑gloss and transparent coatings
Main Functions
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Improve wear resistance & scratch resistance
- Mohs hardness up to 9, forming a rigid skeleton in the coating
- Resists friction, abrasion, scratching and particle erosion
- Reduces wear loss and extends coating service life
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Increase coating hardness
- Significantly raises pencil hardness of the paint film
- Enhances resistance to impact, knocking and mechanical damage
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Enhance adhesion and film compactness
- Particles interlock with resin and substrate to improve adhesion
- Fills voids, making the coating denser and less permeable
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Chemical & thermal stability
- Chemically inert, good acid, alkali and solvent resistance
- High melting point, improves heat resistance of the coating
- Good weatherability, resists UV aging and chalking
5. Optical & construction performance
- White and pure, suitable for light-colored and high-gloss coatings
- Adjustable particle size for matte, semi-matte or anti-slip effects
- Improves thixotropy and reduces sagging during application
Typical Applications
- Industrial floor coatings
- Heavy-duty anti-corrosion coatings for steel structures
- Mechanical equipment and machine parts coatings
- Automotive chassis and wear-resistant parts coatings
- Anti-slip and wear-resistant coatings for ships and pipelines