栲胶-噁唑烷SCU结合鞣成革中甲醛含量及其去除方法  

Formaldehyde Content and it's Removal in Leather Tanned by Vegetable Tannin-oxazolidine SCU Combination Tannage

作　　者：孙青永[1] 李靖[1] 廖学品[1] 石碧[1] 

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

出　　处：《皮革科学与工程》2011年第1期5-8,共4页Leather Science and Engineering

基　　金：国家支撑计划课题(2006BA02A09)

摘　　要：噁唑烷鞣剂SCU与栲胶结合鞣成革具有高湿热稳定性,但成革中存在一定含量的游离甲醛。本文研究了结合鞣工艺对成革收缩温度及甲醛含量的影响,结果表明,工艺条件基本不影响成革中的甲醛含量,甲醛含量只随着噁唑烷SCU用量的增加而增加。该结合鞣法在皮革中产生的游离甲醛,可以用甲醛清除剂DT-A988进行较有效的清除,当DT-A988用量为4%时,成革中的甲醛含量低于70 mg/kg。Tanned by tannin-oxazolidine SCU combination tannage,the leather has a high hydrothermal stability.But a significant contend of formaldehyde is determined in the leather.The effects of combination tanning conditions on shrinkage temperature and formaldehyde content in leather were investigated.It was found that the formaldehyde content increased with the increasing oxazolidine SCU dosage,while the other factors,such as pH and temperature of tanning,amost have no effects.The most of the formaldehyde in leather caused by the tannage can be removed by formaldehyde scavenger DT-A988,and the formaldehyde content in leather was lower than 70 mg/kg when 4 % DT-A988 was used.

关 键 词：噁唑烷 结合鞣 甲醛 除醛剂 

分 类 号：TS54[轻工技术与工程—皮革化学与工程]