The role of white aluminum oxide as a wear-resistant additive for coatings
1. Improving the wear resistance of coatings
White aluminum oxide has a hardness of up to Mohs 9.0 (close to diamond), which can significantly enhance the coating’s ability to resist scratches and friction losses.
The uniformity of its particle size distribution directly affects the density and uniformity of coating application.
By adjusting the amount of white aluminum oxide added (usually 10-30%), the wear resistance level of the coating can be precisely controlled.
White aluminum oxide of different crystal forms (such as α-type and β-type) has different effects on improving wear resistance and needs to be selected according to the application scenario.
2. Enhancing the mechanical properties of coatings
White aluminum oxide can improve the overall hardness and toughness of the coating, making it more resistant to impact and extrusion.
Fine particles can enhance the adhesion between the coating and the substrate and reduce peeling or cracking.
In anti-slip coatings, the microscopic rough surface formed by white aluminum oxide can increase the friction coefficient and enhance the anti-slip effect.
3. Optimize the surface properties of the coating.
White aluminum oxide fills tiny pits in the coating, improves the surface flatness, makes the coating smoother or has a specific texture. By adjusting the particle size of white aluminum oxide powder, the gloss of the coating (such as matte or high gloss effect) can be controlled. Its high glossiness can also enhance the visual aesthetics of the coating.
4. Improve the chemical stability of the coating.
White aluminum oxide is chemically stable and can resist corrosion by acids, alkalis, solvents, etc., extending the life of the coating in a corrosive environment. Its high temperature resistance (tolerance to 2200℃) makes it suitable for protective coatings in high temperature environments. In outdoor coatings, white aluminum oxide can slow down the aging of the coating caused by ultraviolet rays, temperature differences and other factors.
5. Wide application adaptability.
Applicable to architectural coatings (such as exterior walls, floors), industrial coatings (such as automobiles, ships, mechanical equipment) and special coatings (such as UV light-curing coatings). In resin-based coatings, white aluminum oxide as a filler can improve the density and anti-permeability of the coating.
It shows good compatibility when combined with different substrates (metal, concrete, plastic).
Core Advantages Summary
White aluminum oxide achieves multifunctional synergy in coatings such as wear resistance, anti-slip, and corrosion resistance through high hardness, chemical inertness, and morphological controllability, and is suitable for long-term protection needs under complex working conditions.
Haixu Abrasives produces white aluminum oxide with the following sizes:
FEPA:F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000
JIS:#16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000