Applications of white corundum in plastic product coating

Applications of white corundum in plastic product coating
Adding white corundum ( α-alumina) to the coating of plastic products mainly utilizes its unique physical and chemical properties to improve the comprehensive performance of the coating. The specific effects are reflected in the following aspects:
1. ‌Enhance wear resistance and extend life‌
White corundum has a Mohs hardness of up to 9, second only to diamond, which significantly improves the scratch and wear resistance of the coating surface. This is especially important for plastic parts that are often subjected to friction (such as tool handles and industrial equipment housings), which can effectively extend the service life of the product.
2. ‌Improve anti-slip performance‌
White corundum micropowder is evenly distributed in the coating to form tiny protrusions, increase the surface roughness, thereby greatly improving the friction between the coating and the contact surface (such as soles and palms), and enhancing the anti-slip effect. It is suitable for plastic products with high anti-slip requirements such as stair treads and safety equipment.
3. ‌Improve corrosion resistance and chemical stability‌
White corundum has stable chemical properties (main component is Al₂O₃) and strong acid and alkali corrosion resistance. After adding, the coating can maintain its performance in chemical environment, humid or corrosive medium scenes, and protect the plastic substrate from erosion.
4. ‌Improve thermal stability and weather resistance‌
White corundum has a melting point of up to 2250℃ and a refractoriness of 2100℃, which can maintain the structural stability of the coating in high temperature or temperature difference environment. At the same time, its anti-aging properties can reduce the damage to the coating caused by ultraviolet rays, humidity and heat, and is suitable for outdoor plastic products (such as automotive accessories and outdoor furniture).
5. ‌Optimize surface texture and functionality‌
‌Gloss adjustment‌: By adjusting the particle size of white corundum micropowder, the gloss and touch of the coating surface can be controlled to meet different aesthetic requirements.
‌Adhesion improvement‌: As a functional filler, white corundum can strengthen the bonding between the coating and the plastic substrate and reduce the risk of peeling.
‌Improved impact resistance‌: Combined with high hardness and toughness, it can disperse external force impact and reduce the probability of coating cracking.
Haixu Abrasives White Corundum available Sizes
FEPA:F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000
JIS:#12 #14 #16 #20 #24 #30 #36 #40 #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