小分子生物基醛鞣剂的鞣制工艺及特性研究  

Investigation of the tanning process and features of small-molecular bio-based aldehyde tanning agent

作　　者：丁伟 李靖[3] 庞晓燕 石碧[2] DING Wei;LI Jing;PANG Xiaoyan;SHI Bi(China Leather&Footwear Research Institute Co.Ltd.,Beijing 100015,China;College of Biomass Science and Engineering,Sichuan University,Chengdu 610065,China;Sichuan Tingjiang New Material,Inc.,Shifang 618412,China)

机构地区：[1]中国皮革制鞋研究院有限公司,北京100015 [2]四川大学轻工科学与工程学院,四川成都610065 [3]四川亭江新材料股份有限公司,四川什邡618412

出　　处：《中国皮革》2021年第8期8-17,共10页China Leather

基　　金：国家重点研发计划项目(2017YFB0308500);国家重点研发计划“战略性科技创新合作”重点专项(2020YFE0203800)。

摘　　要：为更为系统全面地了解生物基醛鞣剂(BAT)的鞣制特性,本文以小分子生物基醛鞣剂(S-BAT)为研究对象并将其用于浸酸牛皮鞣制,系统考察了鞣剂用量、预渗透时间、提碱结合时间提碱固定pH和温度等鞣制工艺条件对S-BAT鞣制白湿革性能的影响。结果表明,在优化条件下,S-BAT鞣制白湿革的收缩温度可以达到80℃以上,纤维分散程度良好且粒面平细。鞣制工艺条件对S-BAT鞣制白湿革白度具有一定程度的影响,其中鞣剂用量和提碱结合时间的影响最大。因此,当采用S-BAT作为无铬鞣剂时,为了兼顾鞣制白湿革的收缩温度和白度,其用量适宜控制在2%~4%,提碱结合时间不超过4 h。In order to understand the tanning performances of bio-based aldehyde tanning agent(BAT) more systematically and comprehensively, the small-molecule bio-based aldehyde tanning agent(S-BAT) was used in the tanning of pickled cattle hide.The effect of tanning conditions, including the amount of tanning agent, pre-penetration time, fixation time, fixation pH and temperature, on the tanning performance of S-BAT were systematically investigated.The results show that the shrinkage temperature of S-BAT tanned wet-white could reach above 80 ℃ under optimized conditions whilst the degree of fiber dispersion is good, and the grain surface is flat and fine.However, the tanning conditions has some influence on the whiteness of S-BAT tanned wet-white, among which the amount of tanning agent and the fixation time perform the most significant impact on the whiteness. Therefore, when S-BAT is used as a chrome-free tanning agent, the dosage of S-BAT should be appropriately controlled at 2%~4%, and the fixation time should not exceed 4 h, considering the shrinkage temperature and whiteness of wet-white.

关 键 词：小分子生物基醛鞣剂 白湿革 收缩温度 白度 鞣制性能 

分 类 号：TQ94[化学工程]