The Color Fastness to Rubbing Test Method of Fabrics And AATCC-8

 

The AATCC-8 standard test method is a commonly used test method for color fastness to rubbing of fabrics, which requires the use of standard test equipment - color fastness to rubbing test machine (Crockmeter), to conduct rubbing test on fabrics. For the test, the test sample is first fixed on the test bench of the tester and a standard white fabric cloth is placed over the sample surface. The tribometer head is then rubbed on the sample surface under a certain load, typically requiring 20 or 40 rubs, before the white fabric cloth is removed and evaluated. The degree of discoloration on the white fabric cloth can be assessed using either a gray scale or a colorimeter. The gray scale is usually 1-5, with 1 indicating that the discoloration is very visible and 5 indicating that the discoloration is barely visible.

 

When performing the AATCC-8 standard test method, the following aspects need to be noted:

 

1. Sample Preparation and Handling: Samples should be prepared and handled in accordance with the test requirements, including sample size, form, and color. If the samples are to be washed or dry-cleaned, they shall be handled in accordance with the test requirements.

 

2. Calibration of test equipment: The color fastness to rubbing tester needs to be calibrated periodically to ensure the accuracy and reliability of the test results. Calibration should be carried out in accordance with the test standard, including parameters such as load, speed and number of reciprocations. 3.

 

3. Control of test conditions: Test conditions include load, speed, number of reciprocations and temperature, which have a significant impact on test results. Therefore, these conditions need to be strictly controlled during the test to ensure the repeatability and accuracy of the test results.

 

4. Evaluation methods and standards: Evaluation methods and standards should be conducted in accordance with the test standards to ensure the consistency and reliability of the evaluation results. In the evaluation, should use the standard gray level or colorimeter for evaluation, evaluation results should be reported in accordance with the test standards.

 

In addition to the AATCC-8 standard test method, there are many other test methods and standards that can be used to assess the color fastness of fabrics to rubbing, including ISO, ASTM, GB and other standards. These standards and test methods may differ in terms of test conditions, sample preparation and assessment methods, etc. Therefore, the selection of test methods and standards needs to be made on a case-by-case basis.

 

In conclusion, color fastness to rubbing of fabrics is one of the most important indicators for assessing the quality and durability of fabrics. the AATCC-8 standard test method is a commonly used test method, which can assess the color fastness to rubbing of fabrics and provide reliable test results through the use of standard test equipment and standardized test conditions and evaluation methods.