PVC leather,as a commonly used wrapping material for car seats,had a significant yellowing phenomenon in the use of light colored PVC leather such as white,beige,and gray,which affects the widespread application of light colored leather in automobiles.The yellowing resistance of PVC leather for light colored seats could be characterized by two methods:the amine resistance of PVC leather single leather and the amine emission performance of polyurethane foam for the same seat verified by different PVC leather;By adjusting the concentration of antioxidants,amine resistant additives,and pigments in the dense layer of PVC leather,as well as adjusting the concentration of amine resistant additives in the surface treatment layer of PVC leather,the anti yellowing performance of PVC leather could be improved.Finally,by increasing the antioxidant content of the PVC dense layer to 1.2 times the conventional dosage,the pigment content to 1.5 times the conventional dosage,and the amine resistant agent content of the surface treatment layer to 2.0 times the conventional dosage,the anti yellowing performance of PVC was improved to meet the use of standard requirements.
维普
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