INVerSe Chrome taNNINg teChNology baSed oN Wet WhIte taNNed by al-Zr ComPlex taNNINg ageNt
INVerSe Chrome taNNINg teChNology baSed oN Wet WhIte taNNed by al-Zr ComPlex taNNINg ageNt
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基于铝锆复合鞣剂白湿鞣的反铬鞣技术
DOI：
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发表时间：
2015
影响因子：
0.9
通讯作者：
Shi Bi
中科院分区：
文献类型：
--
作者：
Cai Siwei;Zeng Yunhang;Zhang Wenhua;Wang Ya-nan;Shi Bi
针对传统制革生产中蓝湿革中的Chrome在后鞣过程中不可避免地释放到各浮层中，产生大量难处理的含铬废水的问题，研究了一种以铝锆鞣剂AZ（Al-Zr）鞣制湿白色为基础的反Chrome鞣工艺。AZ是本实验室合成的Al 3+和Zr 4+（摩尔比为9：1）与多元羧酸的共配合物。在最佳鞣制条件下，AZ鞣制的湿白色革收缩温度（Ts）为95 ℃，满足了剖革和削革的要求，且不产生Chrome废料。更重要的是，湿白色由于其良好的热稳定性和类似于Chrome革的电荷特性，适合于复鞣、染色和加脂。经加脂、酸固色后，再进行Chrome鞣。在反Chrome鞣工艺中，当Cr2 O3用量为0.5 ~ 1%时，可获得Ts在110 o C左右，且物理和美学性能与常规Chrome鞣皮革相当的皮革。该技术的显著优点是，除最后的Chrome鞣制和水洗工序外，整个制革工序无Chrome排放，大大减少了含铬废水的排放量，且易于收集回收。
In conventional leather production, the chrome in wet blue will be inevitably released into all the floats in post-tanning processes, which brings about a big amount of chromecontaining wastewaters, which can be difficult to treat. As a solution to this problem, an inverse chrome tanning technology based on wet white tanned by Al-Zr tanning agent (AZ) was investigated in present work. The AZ was the co-complexes of Al 3+ and Zr 4+ (9:1, mole ratio) with polycarboxylic acids synthesized in our laboratory. The wet white tanned by AZ had a shrinkage temperature (Ts) of 95 o C under optimal tanning conditions, and therefore, it met the needs of splitting and shaving operations without generation of chrome wastes. More importantly, the wet white was suitable to be followed by retanning, dyeing and fatliquoring processes because of its satisfactory thermal stability and analogous electric charge characteristic to chrome leather. After fatliquoring and fixing by acid, chrome tanning was undertaken as final step. The leather with Ts around 110 o C and comparable physical and aesthetic properties to conventional chrome tanned leather was obtained when 0.5-1% Cr 2 O 3 was used in this inverse chrome tanning technology. The evident advantage of this technology is that no chrome was discharged in whole leather making processes except final chrome tanning and washing processes, and as a result, the volume of chrome-containing wastewater was largely reduced and easier to collect for recovery.
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影响因子：
0.9
作者：
N. Fathima;B. Madhan;J. Rao;B. Nair
通讯作者：
N. Fathima;B. Madhan;J. Rao;B. Nair
影响因子：
0.9
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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作者：
Wu Chao;Wenhua Zhang;Liao Xuepin;Zeng Yunhang;Shi Bi
通讯作者：
Wu Chao;Wenhua Zhang;Liao Xuepin;Zeng Yunhang;Shi Bi
影响因子：
0.3
作者：
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通讯作者：
O. Suparno;A. Covington;C. Evans