A Simple Test Method for Fading Resistance of Pigments

Abstract

The invention relates to a simple test method for color fading resistance, comprising the following steps: preparing a test dish, pasting double-sided adhesive tape in the middle of the bottom surface of the test dish; coating the color material on the surface of a base material, and then cutting the base material Form the sample to be tested, and the area of ​​the sample is larger than the bottom surface area of ​​the test dish; the side of the sample with the coloring material faces up, and the middle of the other side is attached to the double-sided adhesive tape on the bottom surface of the test dish, and the periphery of the sample is overlapped. On the side wall of the test dish, make the middle of the sample downward to form a depression; configure the test solution, pour the test solution into the depression, so that the concave part of the sample is fully in contact with the test solution; let the sample stand still, every set time Finally, compare the color difference between the part of the sample that is in contact with the test solution and other parts to obtain the color fading resistance of the pigment. The test method of the invention is simple and convenient to operate, and can visually display the influence of the test solvent on the color material.

Description

technical field [0001] The invention relates to the field of detection methods, in particular to a simple method for testing the fading resistance of colorants. Background technique [0002] In order to make the surface of daily-used fabrics such as leather, artificial leather, silicone, etc. more beautiful and richer in style, colorants are usually used to print different colors or patterns on the surface of the fabric. After the printing is completed, it is necessary to conduct a fading test on the finished product to check the fading resistance of the colorant, and then improve the formula of the colorant and the printing process to ensure that the product can maintain bright colors after long-term use. [0003] Existing fading tests generally use the method of wiping the test solvent on the surface of the product. Since the test solvent itself will volatilize, its impact on the product will gradually decrease as time goes by. Therefore, personnel are required to repeated...

AI Technical Summary

Problems solved by technology

However, this test method has limitations. On the one hand, the test solvent is in contact with the substrate of the product while it is in contact with the colorant, which will affect the substrate of the product, and then affect the adhesion of the colorant, resulting in The test results are inaccurate; on the other hand, the test lacks a comparison to visually see the difference between the part exposed to the test solvent and the part that was not exposed to the test solvent