封闭型聚氨酯新型无铬鞣剂的研究  

Study of the New Chrome-Free Tanning Agent

作　　者：彭章义 孙青永 PENG Zhangyi SUN Qingyong(Sichuan Decision Chemical Company, Deyang 618000, China)

机构地区：[1]四川德赛尔化工实业有限公司,四川德阳618000

出　　处：《西部皮革》2017年第9期40-44,共5页West Leather

基　　金：四川省定向财力转移支付项目(项目编号:2014ZYZF0013)

摘　　要：用两步法制备了封闭型聚氨酯新型无铬鞣剂。将其应用于绵羊皮的鞣制。结果表明:封闭型聚氨酯新型无铬鞣剂的最佳制备工艺条件为:n_((-NCO))∶n_((-OH))=2.2,亚硫酸氢钠与残余-NCO基团的摩尔比为1.1∶1.0。该鞣剂具有良好的鞣制效果,最优应用工艺条件为:pH=8,时间为2h+过夜。同时,推导了该鞣剂与皮胶原纤维发生作用的原理。New chrome-free tanning agent was successfully fabricated by a two-step method, and thenbating sheep skin tanned by the new chrome-free tanning agent. The results showed that when the molarproportion of （-NCO）颐 （-OH） was 2.2, the molar proportion of NaHSO3 and remaining -NCO was 1.1颐1.0, thepreparation condition of the new chrome-free tanning agent was optimal. Also, the tanning agent showedthe good tanning effect. When the pH was 8, the reaction time was 2 h and a night, the application processcondition of the new chrome-free tanning agent was optimal. In addition, we obtain the reactionmechanism between tanning agent and collagen fiber.

关 键 词：无铬鞣剂 鞣制效果 胶原纤维 

分 类 号：TS529.2[轻工技术与工程—皮革化学与工程]