In order to solve the yellowing problem of polyurethane synthetic leather, Wang Xuechuan and other scholars analyzed and studied the yellowing problem of polyurethane synthetic leather in the paper "Analysis and Discussion of the Yellowing Problem of Polyurethane Synthetic Leather". Analysis, including internal and external influencing factors. Furthermore, it focuses on the commonly used yellowing resistance test methods of polyurethane synthetic leather: light yellowing test methods (including WOM artificial accelerated aging test, ultraviolet accelerated aging, UVA light aging resistance, UVB light aging resistance), phenol yellowing resistance test methods Test Methods. Finally, the problem of how to improve the yellowing resistance of polyurethane synthetic leather is analyzed, and it is proposed to improve the light resistance of synthetic leather products by adding a certain amount of light stabilizer, and four important light stabilizers are introduced, including light shielding agent, ultraviolet ray Absorbents, quenchers, free radical scavengers.
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