Yellow resistance test on synthetic leather

Artificial leather yellowing resistance test can determine the yellowing resistance of artificial leather and is suitable for testing the yellowing resistance of white or light-colored polyurethane artificial leather and polyurethane synthetic leather.
Zhongke Testing Reliability Experiment Center has the ability to test the reliability performance of various artificial leather and synthetic leather, and provides professional yellowing resistance test services for artificial leather.

1. Classification according to the synthetic resin used: polyvinyl chloride artificial leather, polyamide artificial leather, polyolefin artificial leather, polyurethane artificial leather.
2. Classified by base material: cotton cloth-based artificial leather, synthetic fiber-based artificial leather and fiber-based artificial leather.
3. Classification by production method: direct coating and scraping method artificial leather, transfer coating and scraping method artificial leather, calendering and laminating method artificial leather, extrusion laminating method artificial leather, rotary screen coating method artificial leather, wet method artificial leather.
4. Classification by use: Artificial leather can be divided into two categories: civil use and industrial use.
Civilian leather includes: leather for shoe covers, leather for clothes, leather for boxes, straw for bags, leather for handbags, leather for gloves and carts, straw for furniture, etc. Industrial leather includes: vehicle leather, floor leather, etc.

1. Use incandescent lamps and heating temperature control devices to simulate the natural environment, or irradiate the sample with ultraviolet rays. Within a specified period of time, observe the color changes on the surface of white or light-colored artificial leather and synthetic leather samples to determine the degree of discoloration of the sample, thereby determining the material's ability to resist yellowing under solar radiation.
2. The yellowing resistance test methods of artificial leather are divided into sun lamp method (Method A) and ultraviolet lamp method (Method B), of which Method B is the arbitration method.
Note: Method A and Method B are not comparable due to different light sources.

QB/T 4672-2014 Test method for artificial leather and synthetic leather Determination of yellowing resistance
GB/T 250-2008 Gray sample card for assessing discoloration
GB/T 2918-1998 Standard environment for conditioning and testing of plastic specimens