Trial #5

Trial #5

To evaluate abrasion resistance for various floor finishes

2006

13

5

148

149

Coupon

06/29/2006

0.00

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Jason Marshall

Wood

Coatings

There are no related objects.

There are no related objects.

Performance Test

Control of Moisture Content and Temperature
The moisture content at the time of testing will influence results due to the hydroscopic nature of the base materials. Therefore, efforts must be taken to ensure that the moisture content and temperature remain constant during the evaluation period. Ideally, the sample floor should be kept at 65+/-1% relative humidity and 68+/-6 F.

During laboratory testing, conditions were 64% relative humidity and the temperature was ~74 F.

Sample Preparation
The flooring material supplied was Hardwood flooring made from Red Oak. The boards were ¾” thick, 2 ¼” wide and cut into 8” sections.

Three coupons were coated with a supplied floor finish according to the manufacturers’ specifications. The finish was applied using a 1” Pure Bristle 1500 paint brush. To ensure proper coating application rates, the coatings were applied via pipettes to surface. Three coats were used for each floor finish as this was common number of coating layers suggested by the various manufacturers.

The first two coatings were allowed to dry for 2 hours prior to the application of the next coat. The second coat for the current process was allowed to dry overnight before the application of final coat. The Completed coupons were allowed to sit for a minimum period of 24 hours before performance evaluations were conducted.

Abrasion Resistance
The methodology used for this experiment uses little from the ASTM standard. The 80 grit aluminum oxide was used as sandpaper, the testing went for two, 100 cycles and the Navy-type Wear Tester instrument was replaced with the BYK Gardner Abrasion Tester (Figure 4).

Figure 1. Abrasion Tester Apparatus

Coupons were placed into the Abrasion tester and subjected to the 100 cycles with the 80 grit sandpaper. At the end of the first cycle, the coupons were wiped with a dry sponge to remove any dust that was generated. Three thickness measurements were made and recorded to determine the decrease in surface thickness. The coupon was then subjected to the second 100 revolutions with the sandpaper. Measurements were made in the same manner as the first set.

Averages for both sets were calculated and compared to the other floor finishes.

Coupon Thickness After Abrasion Testing

Cycle 2

Average Loss

Figure 2 compares coating losses visually.

The current practice had the greatest resistance to the abrasion, followed by the modified process and the Bona - Oil based mix.

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