This test aims to determine the color fastness of textile products to rubbing and their resistance to color contamination to other materials.
Rubbing fastness is the resistance of a fabric to transfer its color to another fabric with which it is in contact by rubbing. age friction; transferring the color of wet fabric. Dry friction; It is the transfer of the color of the fabric to another fabric while it is dry. (TS EN ISO 105-X12 )
Used materials
Cotton Rubbing Cloth (Properties: Unsized, bleached, unfinished rubbing cloth)
Gray Scale
waterproof sandpaper
Friction test device (CROCKMETER) (Features: It includes a cylindrical test finger with a diameter of 160 mm and can move this finger 9 times in 104 seconds in a straight line over a 10 mm interval on a properly stretched test sample under 10 N load. It is a manual or automatic rubbing device).
Sample preparation
The fabric sample to be used in the experiment is 140 mm x 50 mm in size and 2 samples are prepared, 2 for dry rubbing and 4 for wet rubbing.
The parts parallel to the long side of the samples should be parallel to the warp direction. Test samples are conditioned for at least 4 hours before testing.
Experimental Procedure
In order to prevent the test specimens from dislodgement, a soft-based waterproof sandpaper or a piece of porous wire is placed between the bottom of the device and the test specimens.
The test sample is placed on the bottom of the device in such a way that the long side of the fabric is in the direction of movement of the device, and it is attached with clamps.
Dry Rubbing:
The dry rubbing cloth is placed in the rubbing device so that the fabric tissue is parallel to the rubbing arm.
Age Rubbing:
The rubbing cloth is immersed in distilled water and, after absorbing approximately 100% of its mass, is placed in the rubbing device so that the fabric tissue is parallel to the rubbing arm.
The arm of the rubbing device is moved 10 forwards and 10 backwards, making one cycle movement per second.
This movement is done along a 104 mm line and by applying a force of 9 N to the surface.
The test sample is taken from the device and conditioned for at least 4 hours under standard atmospheric conditions.
Three layers of white rubbing cloth are placed behind the rubbing cloth removed from the device and the staining is evaluated on the gray scale.
Rubbing staining of the tested sample is checked and evaluated using the Gray scale.
Two types of gray scales are used for the rubbing fastness test.
One of them is 5 scale.
The lowest fastness value is 1 and the highest fastness value is 5. The other gray scale is 9 scale.
In this scale, the lowest and highest fastness values are the same as in the 5-scale scale.
However, there are intermediate values between each value.
Therefore, more precise measurements can be made.
Fastness values in 9 scale gray scale are as follows.
1 Lowest fastness value
1-2
2
2-3
3
3-4
4
4-5
5 Highest fastness value
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