White fused alumina plays an important role in the production of wear-resistant wood flooring due to its high hardness (Mohs hardness 9.0), wear resistance and chemical stability. The following are the specific applications and advantages of white corundum in wear-resistant wood flooring:
1. As the core material of the wear-resistant layer
White corundum is usually added to the wear-resistant layer of laminate flooring in the form of micropowder or particles (such as 180#, 220# particle size). These micropowders are evenly distributed in wear-resistant paper or coating to form a high-hardness protective layer, which significantly improves the scratch resistance and wear resistance of the floor138.
Wear-resistant paper application: White corundum micropowder (such as F180, F220) is impregnated into wear-resistant paper, and then combined with the wood floor substrate through a hot pressing process to form a highly wear-resistant surface8.
Coating application: Add white corundum micropowder (such as W40-W63) to UV or PU coating to enhance the hardness and wear resistance of the coating4.
2. Production process
Raw material selection: High-purity (Al₂O₃≥99.5%) white corundum is selected to ensure wear resistance and stability16.
Particle size control: Usually 180#-240# (particle size 75-53μm) white corundum is used to ensure wear resistance and surface smoothness18.
Dispersion process: It is necessary to ensure that white corundum is evenly distributed in the coating or impregnation liquid to avoid sedimentation or aggregation, which will affect the wear resistance47.
3. Performance advantages
High wear resistance: The hardness of white corundum is much higher than that of wood, which can greatly extend the service life of the floor and is suitable for high-traffic areas (such as shopping malls and offices)15.
Chemical corrosion resistance: White corundum is acid and alkali resistant and suitable for home and industrial environments13.
Environmental protection: Inorganic materials, no VOC release, and meet environmental protection standards47.
4. Industry standards and development
At present, the domestic industry standard “White corundum abrasive for laminate flooring” is being formulated to regulate product quality and promote the healthy development of the market5. White corundum abrasive has become the mainstream choice for high-wear-resistant laminate flooring (wear-resistant revolutions of more than 6,000 revolutions)5.
5. Practical application cases
German technology promotion: It was first developed by German companies and has now become the standard configuration of high-wear-resistant floors around the world5.
Domestic production advantages: China’s white corundum production accounts for more than 80% of the world’s total, and is widely used in export and domestic markets56.
Summary
White fused alumina has become a key material for wear-resistant wood flooring through its excellent physical and chemical properties, which can not only improve product life, but also meet environmental protection and industrial needs. In the future, as industry standards are improved, its application will be further expanded.