Page 190 - 《精细化工》2020年第9期
P. 190
第 37 卷第 9 期 精 细 化 工 Vol.37, No.9
202 0 年 9 月 FINE CHEMICALS Sept. 2020
皮革化学品
氧化-磷酸酯化亚麻油加脂剂的制备及其作用机理
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王琦超 1,2 ,沈一丁 1,2* ,强西怀 ,杨 凯 1,2 ,朱 辉 1,2 ,王 倩 1,2
(1. 陕西科技大学 化学与化工学院,陕西 西安 710021;2. 陕西科技大学 陕西省轻化工助剂重点实验
室,陕西 西安 710021;3. 陕西科技大学 轻工科学与工程学院,陕西 西安 710021)
摘要:以亚麻油、过氧化氢为原料,合成了环氧值分别为 1.16、1.52 和 2.32 mmol/g 的 3 种环氧亚麻油,再与
定量的磷酸进行酯化反应,合成了 3 种结合型氧化-磷酸酯亚麻油皮革加脂剂 LCF-P1、LCF-P2 和 LCF-P3。将
其应用于皮革加脂,探究了不同环氧化程度对氧化-磷酸酯化皮革加脂剂的加脂性能影响,并与市售磷酸酯加脂
剂进行了加脂效果对比。用 SEM 观察了皮革加脂前后断面胶原纤维形貌变化。结果表明,环氧值 1.52 mmol/g
2
的加脂剂 LCF-P2 表现出良好的加脂性能,加脂后坯革柔软度达 10 mm,抗张强度为 35.91 N/mm , 撕裂强度为
49.56 N/mm,皮革增厚率为 24.36%。加脂剂 LCF-P2 在皮革增厚率、机械强度提高方面略优于市售磷酸酯加
脂剂。
关键词:亚麻油;环氧化;磷酸酯化;加脂性能;增厚率
中图分类号:TS529.4 文献标识码:A
文章编号:1003-5214 (2020) 09-1904-07 开放科学 (资源服务) 标识码 (OSID):
Preparation and mechanism of oxidizing-phosphate
linseed oil fatliquoring agents
1,2
3
1,2
1,2
1,2
WANG Qichao , SHEN Yiding 1,2* , QIANG Xihuai , YANG Kai , ZHU Hui , WANG Qian
(1. College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021,
Shaanxi, China; 2. Shaanxi Key Laboratory of Light Chemical Additives, Shaanxi University of Science & Technology,
Xi'an 710021, Shaanxi, China; 3. School of Light Industry Science and Engineering, Shaanxi University of Science &
Technology, Xi'an 710021, Shaanxi, China)
Abstract: Three epoxy linseed oils with epoxy values of 1.16, 1.52 and 2.32 mmol/g were synthesized
firstly using linseed oil and hydrogen peroxide as raw materials. And then they reacted with quantitative
phosphoric acid to synthesize three combined oxidized-phosphate linseed oil leather fatliquors LCF-P1,
LCF-P2 and LCF-P3. LCF-P1, LCF-P2 and LCF-P3 were applied to leather fatliquoring. The effect of
different epoxidation degree on fatliquoring performance of oxidized phosphate linseed oil fatliquor was
studied, and the fatliquoring effect was compared with that of commercial phosphated fatliquor. SEM was
used to observe the morphology of collagen fibers in the cross section of leather before and after fatliquoring.
The results showed that LCF-P2 with an epoxy value of 1.52 mmol/g, exhibited good fatliquoring
performance. After fatliquoring, the softness of grey leather reached 10 mm, the tensile strength was 35.91
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N/mm , the tear strength was 49.56 N/mm and the thickening rate of leather was 24.36%. LCF-P2 had
better leather thickening rate, mechanical strength improvement than commercial phosphated fatliquor.
Key words: linseed oil; epoxidation; phosphate esterification; fatliquoring performance; thickening rate
加脂是皮革加工过程中最重要的一道工序 [1-4] , 特点而受到重视 [5-6] 。磷酸酯可与皮革中的铬产生络
磷酸酯类加脂剂因其优良的加脂性能及清洁生产等 合配位,具有结合活性,赋予皮革良好的丝光感和
收稿日期:2020-01-10; 定用日期:2020-06-03; DOI: 10.13550/j.jxhg.20200031
基金项目:陕西省教育厅重点实验室科研计划项目(2010JS058)
作者简介:王琦超(1994—),女,硕士生,E-mail:925657214@qq.com。联系人:沈一丁(1957—),男,教授,博士生导师,E-mail:
ydshen@sust.edu.cn。