摘要
通过对柠檬酸、草酸、乳酸、硼酸等常规无氨脱灰剂材料以及无氨脱灰剂C与常规铵盐——硫酸铵做比较,通过滴定、石灰沉降和牛皮脱灰实验,考察脱灰剂的pH缓冲性能、石灰沉降速度和脱灰效果。结果表明:有机酸(柠檬酸,草酸和乳酸)与硫酸铵缓冲性能差异较明显,其中柠檬酸和草酸与石灰结合速度较快,无氨脱灰剂C具有与硫酸铵接近的pH缓冲性能和石灰沉降速度;浴液pH变化规律和趋势说明硼酸和无氨脱灰剂C的脱灰效果与硫酸铵接近,切口检查表明无氨脱灰剂C脱灰渗透速度比硼酸快,比硫酸铵稍慢。
The pH buffering performance,lime settling speed and deliming efficiency were investigated through titration,lime settling and cattle hide deliming experiments,by comparing citric acid,oxalic acid,lactic acid,boric acid and non-ammonia deliming agent C with ammonium sulfate.The results indicate that the buffer properties of organic acid and ammonium sulfate were obviously different.The combination speed of citric acid and oxalic acid with lime is faster,however non-ammonia deliming agent C has a pH buffer action extent and lime settling speed comparable to ammonium sulfate.The pH curves show that the deliming efficiency of boric acid and non ammonia deliming agent C is approximation to that of ammonium sulfate.Incision examinations turn out that the deliming penetration rate of deliming agent C was faster than boric acid,and slightly slower than ammonium sulfate.
作者
王再学
宋小群
王兆威
徐彦红
臧亚南
龙忠珍
冯莉
WANG Zaixue;SONG Xiaoqun;WANG Zhaowei;XU Yanhong;ZANG Yanan;LONG Zhongzhen;FENG Li(China University of Mining and Technology,College of Chemical Engineering,Xuzhou 221116,China;Xuzhou College of Industrial Technology,Department of Material Engineering,Xuzhou 221140,China;Xuzhou Hoffen Chemicals Co.,LTD,Xuzhou 221200,China)
出处
《皮革科学与工程》
CAS
北大核心
2021年第4期50-54,共5页
Leather Science and Engineering
基金
江苏省自然科学基金(BK20161166)
江苏省高职院校教师专业带头人高端研修项目(2020GRGDYX098)
江苏高校“青蓝工程”
徐州市科技厅重点研发计划项目(KC20055)。
关键词
制革
脱灰
氨氮
无氨脱灰剂
硫酸铵
leather manufacture
deliming
ammonia nitrogen
non-ammonia deliming agent
ammonia sulphate
作者简介
第一作者:王再学(1981-),男,在读博士,副教授,E-mail:wangzx@mail.xzcit.cn;通信联系人:宋小群(1975-),女,助理工程师,E-mail:emily.song@dinktrading.com,主要研究方向为皮革化学品应用技术。
