不同有机配体对锆-铝-钛多金属配合鞣液反应性的影响  

Influence of Different Organic Ligands on Preparation and Reactivity of Zr-Al-Ti Polymetallic Tanning Liquor

作　　者：陈哲[1] 但年华[1] 李正军[1,2] 林海[1] 贾淑平[1,2] 朱剑[1] 曾睿[2] 但卫华[1,2] 

机构地区：[1]四川大学制革清洁技术国家工程实验室,四川成都610065 [2]四川大学苏州研究院,江苏苏州215123

出　　处：《中国皮革》2011年第15期16-19,27,共5页China Leather

基　　金：苏州市国际科技合作项目(SWH0907)

摘　　要：在不同有机配体(柠檬酸、乳酸、邻苯二甲酸、甲酸和双醛淀粉)、pH以及熟化时间的条件下,用pH电位滴定法对锆-铝-钛多金属配合鞣液的稳定性进行了研究,然后进行配体两两配伍,用pH电位滴定法和紫外吸收光谱等对锆-铝-钛多金属配合鞣液的稳定性进行了表征,得到最佳配伍方案,最后通过鞣制工艺对锆-铝-钛多金属配合鞣液的反应性进行了表征。结果表明:当鞣液中各金属离子摩尔比为n(Ti4+)∶n(Al3+)∶n(Zr4+)=0.5∶4∶1,且n(金属离子)∶n(柠檬酸)∶n(乳酸)=1∶0.1∶0.1时,配合物在稳定性和反应性两方面的表现最好,鞣制革样的收缩温度可达92℃。The stability of the Zr-Al-Ti polymetallic tanning liquor was studied with the pH potentiometric titration under different organic ligands（citric acid, lactic acid, phthalic acid, formic acid and double aldehyde starch）, pH values and aging time conditions. The compatibility between any two ligands was carried out and the stability of Zr-Al-Ti polymetallic tanning liquor was characterized with the pH potentiometric titration and the ultraviolet absorption spectrometry to obtain the optimum conditions. The reactivity of Zr-Al-Ti polymetallic tanning liquor was characterized by the tanning process. The results show that when the molar ratio of the metal ions in tanning liquor is n（ Ti^4＋）：n（Al^3＋）：n（Zr^4＋） = 0.5 ：4：1, and n（metallic ion）：n（： citric acid）：n（lactic acid） = 0.5： 4 ： 1, the stability and reactivity of tanning liquor is best , and the shrinkage temperature of the resultant leather tanned with the above liquor is up to 92℃.

关 键 词：锆-铝-钛 配合物 配体 反应性 鞣制 

分 类 号：TS529.2[轻工技术与工程—皮革化学与工程]