This method determines the resistance of organic coatings to abrasion produced by the Taber Abraser on coatings applied to a plane, rigid surface, such as a metal panel. The coating is applied at uniform thickness on panel and after curing, the surface is abraded by rotating the panel under weighted abrasive wheels. The load on the wheels can be adjusted to 250g, 500g or 1000g. Each specimen is abraded using rotary rubbing action under controlled conditions of pressure and abrasive action. The test specimen, mounted on a turntable platform, turns on a vertical axis against the sliding rotation of two abrading wheels. One abrading wheel rubs the specimen outward toward the periphery and the other inward toward the center. Specimens are abraded repeatedly and brush cleaned for a set number (2, 5, 10, and 100) of rotational cycles. Abrasion (wear) resistance is calculated as loss in weight at a specified number of abrasion cycles (loss in weight per cycle) or as number of cycles required to remove a unit amount of coating thickness.
- Ambient test temperature
- The load on the wheels can be adjusted to 250g, 500g or 1000g
- Disc 4” (100 mm) in diameter or a plate 4” (100 mm) square with rounded corners and with a ¼” (6.3 mm) hole centrally located on each panel
- A minimum of two coated panels for the material should be tested
- The test panel should be a rigid panel having both surfaces substantially plane and parallel
- Thickness of the specimen should be no greater than 6.3 mm (¼”)
Charter Coating’s Taber Abraser