传统的鞣制皮革多用铬鞣剂，所有铬化合物是有毒的，穿铬鞣革的安全问题引起的产品已经成为越来越多的关注。数天前，在北京举行的第三届“中国皮革业发展论坛”，铬的使用免费的鞣制皮革制品的技术已成为与会者的关注。

皮革工程，根据浙江省重点实验室教授兰云军，引进董事，一般生化方法很难铬退化，长期无节制的排放有害物质的积累，造成水体污染严重影响水生生物和微生物生长，破坏生态平衡;和铬的存在可能导致三价铬一代的100多倍的有毒六价铬，同时，也可能危及铬通过食物链引起的，人体健康癌症，对环境和人类的危害，已是重复的科学验证。

由温州大学皮革研究所开发出一种新型的非在铬鞣革技术的使用作为陆路交通的重要组成部分锆- 1型金属（无铬）复合鞣剂助剂，和与之配套的无铬鞣D8的合作伙伴，在非铬金属鞣剂，醛鞣鞣剂的提取和基于以下三个类别的非铬鞣剂，无论从鞣革收缩温度，后续行动进程，物资分配，皮革综合性能，还是从保护环境和生态的考虑，非铬金属复合鞣剂最有可能成为铬鞣剂的主流。

无铬鞣剂的金属复合鞣剂主要用于有锆鞣剂，钛鞣剂和铝鞣剂，特别是四价锆离子会皮革收缩温度较高，因此，锆铬金属复合材料，即使是{dy}部分自由鞣剂的必要组成部分。这项技术已应用于绵羊皮，山羊皮和轻革和皮革制革，生产可以从服装，鞋，手套，沙发革等日用品各个方面。

该技术的试验应用表明，无铬鞣制与技术重复性好，可再次重复，该技术已经更加成熟的普及和大规模应用的条件。

Chromium compounds are toxic chromium-free tanning leather healthier

Traditional tanning using chromium as many leather tanning agent, all chromium compounds are toxic, wear chrome tanning leather products caused by security problems have become an increasing concern. A few days ago, the third held in Beijing, “China Leather Industry Development Forum”, the use of chromium-free tanning technology of leather products has been the concern of the participants.

leather works, according to Zhejiang Provincial Key Laboratory of Professor Yun-Jun Lan, director of introduction, the general biochemical methods it is difficult to chromium degradation, long-term accumulation of harmful substances uncontrolled emissions, causing severe pollution of water bodies and affect aquatic organisms and microbial growth, damage to the ecological balance; and the existence of chromium may lead to generation of trivalent chromium than 100 times the toxic hexavalent chromium; at the same time, chromium may also endanger human health through the food chain, induced cancer, its environmental and human harm has been repeated scientific validation.

leather from Wenzhou University Institute developed a new type of non-chrome tanning in leather technology uses zirconium as the major component of the LTA-1-type metals (chromium-free) composite auxiliary tanning agent, and its accompanying non-chrome tanning partner D8, in the non-chromium metal tanning agents, aldehyde tanning extract and tanning agent based on three categories of non-chrome tanning agent, whether from tanning leather shrinkage temperature, follow-up process, the allocation of materials, leather integrated performance, or from the environmental protection and ecological considerations, non-metal composite chromium tanning agents are most likely to become the mainstream of chrome tanning agent.

non-chrome tanning agent metal compound used in the main tanning agent has Zirconium tanning agent, titanium tanning agent and aluminum tanning agent, in particular the tetravalent zirconium ions will give the leather a higher shrinkage temperature, therefore, zirconium metal composite are chromium-free tanning agent are necessary components of even the first component. This technology has been applied to sheep skin, goatskin and light leather and other leather tanning, production can be made from a variety of clothing, boots and gloves, sofa leather and other daily necessities.

the application of the technology experiment showed that the chromium-free tanning technology with good repeatability, can be repeated again, the technology has been more mature, with the popularization and application of large-scale conditions. (07-12-6)