![Causes and solutions of yellowing of polyurethane sponge](/uploads/20240702/9291885bc21104eab639085287decc10.jpg)
Causes and solutions of yellowing of polyurethane sponge
The yellowing of polyurethane sponge has always been a problem that plagues sponge manufacturers and polyol manufacturers. Many sponge manufacturers, especially some high-end sponge manufacturers, have tried to improve the anti-yellowing performance of sponge by adding antioxidants and light stabilizers, but the results are not significant. In this article, we will analyze the causes of yellowing of sponge systematically based on the upstream and downstream characteristics of polyol and sponge production, and elaborate the corresponding solutions.