White electro corundum F180, F220, and F240 are suitable for two-component microcement group A filler. It has better wear resistance, corrosion resistance, and high-temperature resistance than quartz sand. Microcement, also known as Taikoo cement, is a new type of building material that has emerged in recent years. It can achieve seamless integration of the ground, wall, and roof. It is similar to polyurethane water-based flooring. Microcement is a decoration material made by fusing micro cement with resin and adding wear-resistant materials. It has advantages such as good wear resistance, waterproofing, corrosion resistance, and antibacterial properties.
White electro corundum is a fused aluminum oxide material with grain and powder sizes. The hardness is Mohs 9.0 with a specific gravity of 3.95g/cm3. The refractory temperature is up to 1800 degrees. The white electro corundum can improve the performance of microcement in the following aspects:
1. Increase stability:
White electro corundum 25A is a stable inorganic material that is not easy to react with substances such as acids and alkalis. So it can increase the stability and durability of microcement.
2. Control shrinkage:
Microcement may contract during the drying process, which may lead to cracking. The thermal expansion coefficient of white alumina is low. Even at 1000 ℃, the thermal expansion coefficient is only 6.0×10-6/° C. Adding an appropriate amount of white aluminum oxide powder can control the shrinkage of micro cement and reduce the risk of cracking.
3. Increase hardness:
White electro corundum has high hardness, Mohs scale hardness is 9.0, and Vickers hardness is 22-24Gpa. It can improve the hardness and wear resistance of micro cement. In the meantime, it prevents the micro cement from falling off due to scraping of hard objects.
4. Increase waterproof and adhesive properties:
The water absorption and oil absorption rate of white electro corundum are both very low. It has a waterproof function after being made into two components of microcement. The good bonding between white corundum and resin is conducive to the uniform distribution of alumina in micro cement.
Overall, the main role of WFA grain in microcement is to increase stability, improve bonding performance, control shrinkage, and increase hardness. These effects make microcement more suitable for the decoration of homes, hotels, and storefronts. It turns the White electro corundum can avoid the drawbacks of cracking and poor scratch resistance caused by quartz sand as a filler.
