To improve the ecological performance of leather retanning process,using zirconium-aluminum-titanium tanned wet-white as raw material,taking the obtained leather's thermal shrinkage temperature,tear strength,sensory performance and COD content in retanning effluent as evaluation indicators,a chrome-free retanning process based on modified glutaraldehyde,zirconium-aluminum-titanium complex tanning agent and cationic oil was designed and optimized.The results showed that when the amount of modified glutaraldehyde tanning agent was 2%,the amount of zirconium-aluminum-titanium complex tanning agent was 2%,and the amount of cationic oil was 0.4%,the retanning effect and ecological performance were good,and the retanned crust leather also had good heat resistance,sensory performance and physical properties.It provides a new method for the eco-design of ecological leather.
维普
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