制革浸灰助剂及其应用工艺研究

文档编号:HG122  文档字数:9030,页数:28

 摘 要：传统的硫化碱脱毛法会产生大量高污染废液及废气，严重影响了生态环境。本文档研究了偏硅酸钠以及胰酶在皮革脱毛工序中的应用，通过单因素试验，考察了处理时间、胰酶浓度、浸液PH值和偏硅酸钠浓度对实验结果的影响，通过四因素三水平正交试验，得到最佳处理工艺条件：处理时间为7h、胰酶浓度为0.4%、混合液的pH值为7.9、偏硅酸钠浓度为0.1%。
 关键词：皮革；脱毛；偏硅酸钠；胰酶

Study on the Application of Leather Auxiliaries in the Leather Industry

Abstract：The traditional dehairing process which used sodium sulfide produced lots of high pollution waste and emission .In this paper, the application of sodium metasilicate and pancreatin during dehairing process is researched. Through single factor tests, different results for the variation of the time for soaking, concentration of the pancreatin, PH of the tanning liquor and the concentration of the sodium metasilicate are discovered. Through four factors and three levels orthogonal, the best experimental conditions have been found: time for soaking is 7h; concentration of the pancreatin is 0.4%; PH of the tanning liquor is 7.9; concentration of the sodium metasilicate is 0.1%.
Keywords：Leather; Dehairing; Sodium metasilicate; Pancreatin

目  录
中文摘要 I
英文摘要 II
目  录 III
1  绪论 1
1.1  制革业概述 1
1.2  脱毛工序概述 1
1.3  脱毛技术现状 2
2  实验部分 4
2.1  实验材料与设备仪器 4
2.2  工艺流程 4
2.3  分析测试 4
3  结果与讨论 6
3.1  处理时间对处理结果的影响 6
3.2  胰酶浓度对处理结果的影响 7
3.3  浸液pH值对处理结果的影响 10
3.4  偏硅酸钠浓度对处理结果的影响 12
3.5  四因素三水平正交实验 15
3.6  正交实验结果分析 19
4  总结与展望 21
致  谢 22
参考文献 23

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