Two-component floor coating with wear-resistant alumina 240#

Two-component Floor Coating with Wear-resistant Aluminum Oxide 240#

Fused aluminum oxide, also known as white fused alumina, is used in the coating industry due to its excellent wear resistance, low oil absorption, and high hardness, making it widely used as a coating filler. Fused aluminum oxide is produced by melting and crystallizing industrial alumina with 99% purity in an electric arc furnace at 2050°C, hence it is also referred to as fused corundum. It has high purity, good self-sharpening, resistance to acid and alkali corrosion, high-temperature resistance, and stable performance at high temperatures. Its hardness is slightly higher than that of brown fused alumina, with slightly lower toughness but strong cutting ability.

Main performance characteristics of fused aluminum oxide:

In coating formulations, besides resin binders, fillers are often added to serve functions such as filling and adjusting coating properties. As a filler material for coatings, it must meet the following basic requirements:

1. High whiteness. It should not affect the color matching of the coating binder and pigments.

2. Good dispersibility. Easily dispersible fillers not only reduce the time and cost of dispersing fillers during coating production but also contribute to the performance of the coating.

3. Chemical stability and inertness. The filler should not react with the binder, pigments, or other fillers in the coating.

4. Low oil absorption. Low oil absorption helps increase the critical pigment volume concentration of the coating and saves resin binder. It also matches other low-oil-absorption pigments commonly available in the market.

5. Accurate particle size with a narrow and concentrated range. Fillers with a narrow particle size distribution can provide spatial separation in the coating, ensuring more uniform distribution of various material particles and helping maintain consistent coating performance.

6. Good fluidity. Excellent fluidity (leveling) prevents sedimentation during storage and facilitates coating application.

7. Appropriate specific surface area. Specific surface area affects coating viscosity, fluidity, dispersion stability, sedimentation, and oil absorption.

Fused aluminum oxide is an alumina material formed through high-temperature electric melting and crystallization, also known as fused white alumina micro-powder. Its chemical properties meet the stability requirements for fillers. As a filler for water-based coatings, epoxy coatings, polyurethane coatings, fluorocarbon coatings, and fluorocarbon powder coatings, it offers the following advantages:

1. High whiteness.

2. Fused aluminum oxide micro-powder undergoes hydraulic overflow classification, resulting in excellent fluidity and dispersibility.

3. Strong chemical stability, with no chemical reactions with acids, alkalis, or other substances.

4. Low oil absorption, tested by our company's customers to be within 10%.

5. Produced using a water-based process, fused aluminum oxide has a concentrated particle size range, with effective control over large particles to ensure uniformity.

6. High refractory temperature and strong thermal stability.

7. Neutral pH.

8. High hardness and strong wear resistance, enhancing the coating's abrasion resistance.

9. Our factory produces fused aluminum oxide micro-powder in a complete range of particle sizes, from 63 microns to 0.5 microns.

Chemical composition of fused aluminum oxide (typical values):

Physical properties of fused aluminum oxide:

Common models of fused aluminum oxide for coatings:

180 mesh, 220 mesh, 240 mesh, 280 mesh, 1200 mesh, 1500 mesh, 2000 mesh, 2500 mesh.

Applications of fused aluminum oxide in coatings:

1. Water-based epoxy floor paint

2. Parking lot polyurethane coatings (PU coatings)

3. Powder coatings

4. Epoxy floor mortar coatings

5. Other wear-resistant coatings, etc.