| abstract |
The invention relates to a yellowing-resistant PU sponge composite PVC synthetic leather and a composite material. The PVC synthetic leather comprises a base fabric layer, an adhesive layer, a foamed layer and a surface layer that are stacked in sequence, and the raw material formula of the adhesive layer comprises PVC resin. , Antiamine agent and stabilizer, among which, the addition amount of antiamine agent accounts for 0.3~1% of the quality of PVC resin, the addition amount of stabilizer accounts for 2~4% of the quality of PVC resin, and the antiamine agent is perchlorate. In the present invention, the anti-amine agent is added in the adhesive layer, so that after the PVC synthetic leather is compounded with the PU sponge in flames, the anti-amine agent in the adhesive layer can react with the amine substances in the PU sponge, thereby effectively inhibiting the amine substances in the PU sponge. It greatly reduces the amine substances that penetrate into the epidermis when the PVC synthetic leather compounded with PU sponge is curled, and the resistance to yellowing is significantly improved, effectively solving the problem of yellowing during storage and transportation. |