Metal Bonded Tanning Agent Can Eliminate Chrome Pollution And Achieve Ecological Leather Making.

< p > > a href= "http://sjfzxm.com/news/index_f.asp" > tannery > /a > industry, chrome tanning has become the dominant tannage way since its application because of its superior properties.

However, due to the potential hazards of chrome salt tanning and the shortage of chromium resources, the development of chrome free and less chrome tanning technology is not only the need of the environment, but also the inevitable way for the sustainable development of leather industry.

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< p > besides the new development direction of vegetable tanning agent and aldehyde tanning agent, the research and development of metal binding tanning agent is also of great significance for improving tanning effect.

At the Tenth National Leather Chemicals Symposium, Sichuan University shared the latest research progress in the application of zirconium, titanium, aluminum and iron polymetallic tanning agents and their application in tanning of goats upper leather.

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According to the introduction of P, the purpose of the research is to develop a new chrome free multi metal complex tanning agent to meet the requirements of ecological tanning agent and study its tanning properties.

The research is based on the application of iron zirconium aluminum complex tanning agent and its tanning system to goat shoe upper leather. The physical and mechanical properties, sensory properties and chemical properties of tanned leather are studied, compared with conventional chrome tanning leather, and compared with the industry standard of China's light industry on upper leather.

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< p > analysis of the sensory properties of leather shows that the comprehensive score of iron zirconium aluminum tanning leather is slightly lower than that of conventional chrome tanned leather. The softness, fullness and particle properties of the 3 grades are slightly lower than those of conventional chrome tanned leather, but the elasticity of multi metal tanned leather is higher than that of conventional chrome tanned leather. Compared with the conventional chrome tanning leather, the comparison of the two kinds of process systems shows that the cost per unit area of the iron zirconium aluminum complex tanning system is significantly lower than the unit cost of chrome tanning system.

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< p > but the significance of this research is to eliminate the pollution of chromium to the environment and solve the problem of resource utilization of tannery solid waste, so as to truly realize ecological leather making.

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