4N Al2O3 for wearproof coating

4N Al2O3 for Wearproof Coating: 30 nm α-Phase Nano Alumina

As a 4N Al2O3 for wearproof coating, Xi'an PUTAI Environmental Protection Co., Ltd. provides 30 nm -phase nano alumina with 99.99% purity. The powder is designed to provide wear resistance and hardening to oleophilic and hydrophilic coatings. It is offered in two grades of specific surface area 10–20 m2/g and 20–50 m2/g. Results provided by the supplier include around a 3-fold increase in scratch resistance, 2 to 4 times the wear resistance of standard coatings and gloss retention over 70% after 10 simulated vehicle washes. Select the grade that corresponds to your resin and solvent system.

4N Al2O3 for Wearproof Coating Specifications

The values above are taken directly from the supplier's specification data. Other details, such as bulk density, moisture content, packaging, MOQ, lead time and certifications, are not provided on this page. Please ask us to confirm any of them before you order.

Material Profile

This is called the "4N" grade, meaning 99.99% pure. The higher the purity, the more it helps to reduce undesirable ingredients in a coating formulation.

The crystal form is α-phase which is usually used when hardness and thermal stability are important. The 30 nm particle size is smaller than 100 nm, therefore properly scattered particles are less prone to cloud a clear film. Dispersion quality is still the determining factor in the end output, so try it on your own system.

There are two grades of surface area, 10-20 m²/g and 20-50 m²/g, so you may match the powder to your resin and solvent system.

Performance in Wear-Resistant Coatings

Supplier-reported data show that nano alumina raises scratch resistance by about 3 times and wear resistance by 2–4 times compared with traditional coatings. This gives 4N Al2O3 for wearproof coating a clear role on surfaces that face friction and repeated cleaning.

The gloss test used automotive paint. Ordinary paint kept only 35% of its gloss, while paint modified with nano alumina stayed above 70%. This page does not state the loading level, film thickness or test standard, so confirm the results in your own formulation.

Where It Fits

• Main use: Oleophilic and hydrophilic coatings. The powder provides wear resistance and hardness to the cured film.
• Vehicle paint: The simulated car wash gloss test was performed on vehicle paint.
• Surfaces subjected to friction and regular cleaning: This is where wear and scratch resistance are most important.

Dispersion and Storage Notes

Nano powders are prone to agglomerate because of their high surface energy. When working with the product, use high-shear equipment (e.g., bead mill) and add a silane or surfactant surface modification suitable with your solvent system. Check dispersion using Transmission Electron Microscopy (TEM) before to scale up.

Alumina is chemically stable, but may pick up moisture and cake. • Keep container securely closed. • Keep in a dry location. Perform a Loss on Ignition (LOI) test to determine moisture content before usage after long storage.

It’s not test data for a particular product, it’s general handling practice.

About the Supplier

PUTAI Group was founded in August 2008 and floated in November 2016 under stock number 839410. The business integrates R&D, manufacturing, sales and associated services. The group has two production sites with the area of around 30,000 m² and 100,000 m² each. Its broader business also include water treatment chemicals and environmental protection.

Purchasing Checklist

Before requesting an estimate for 4N Al2O3 for wearproof coating, please verify the following:

• Surface area rating: 10 to 20 m²/g or 20 to 50 m²/g
• Your resin and solvent system
• Dispersion equipment available, e.g. bead mill
• Surface modifier scheme: surfactant or silane
• VOLUME AND STORAGE CONDITIONS OF TARGET

FAQ

Q1: What are your grades?

A: Both grades are 99.99% pure, α-phase and 30 nanometres in size. They are differentiated by particular surface area: 10–20 m²/g or 20–50 m²/g.

Q2: Will it cloud a clear coat?

A: No haze or transmittance data is supplied here. Good dispersion of nano particles will make them less prone to haze, therefore check with TEM and your own film testing.

Q3: How do I keep the powder?

A: Keep containers closed and dry. Moisture may cause caking. Perform LOI test after lengthy storage time.

Q4: Shelf life, packaging or MOQ details?

A: This site does not include those information. Please email us and we will confirm them.

Contact Us

Do you have more questions about 4N Al2O3 for wearproof coating? Email sales@ywputai.com with your coating system, preferred surface area grade and target volume.