TWS鞣剂在浸酸与不浸酸体系下鞣制性能研究

doi:10.19677/j.issn.1004-7964.2021.06.002

Leather Science and Engineering ›› 2021, Vol. 31 ›› Issue (6): 8-13.doi: 10.19677/j.issn.1004-7964.2021.06.002

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Study on the Tanning Properties of TWS Tanning Agent in Pickling and Non-pickling Systems

LIU Ting¹, QIANG Xihuai^1,2

1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021,China;
2. National Demonstration Center for Experimental Light Chemistry Engineering Education, Xi'an 710021, China

Received:2021-05-24 Published:2021-12-28 Online:2021-11-25

Abstract

Abstract: In this paper, based on yellow cattle pickled hide as experimental object, the tanning performance of TWS tanning agent in two tanning systems, conventional pickling and non-pickling, was studied. By means of experiments and analysis, such as shrinkage temperature of crust leather, fiber morphology analysis, grain roughness analysis, TG-DSC analysis and physical and mechanical properties test, the influence of technical conditions of tanning process on tanning effect was investigated, and the difference of tanning performance of TWS tanning agent in two tanning systems was evaluated. The experimental results showed that, in the two tanning systems, the influence of technological conditions on the tanning effect is highly consistent. The best dosage of TWS tanning agent is 6%, and the tanning penetration time is 240 min, and the pH at the end of tanning alkali extraction is controlled to be 7.5. The shrinkage temperature of leather can reach above 85 ℃. The grain plumpness and pore clarity of TWS tanned leather under the two tanning systems are basically similar, and the thermal stability and mechanical properties of the corresponding leather are also similar. Therefore, the TWS tanning process without pickling system can completely achieve the effect of conventional pickling tanning system, which avoids the use of neutral salt in industrial production and reduces salt pollution in tanning process, and has certain theoretical guiding significance for the popularization and application of clean tanning technology with TWS tanning agent.

Key words: TWS, pickling, non-pickling, chrome-free tanning, leather manufacture

CLC Number:

TS529.2

LIU Ting, QIANG Xihuai. Study on the Tanning Properties of TWS Tanning Agent in Pickling and Non-pickling Systems[J]. Leather Science and Engineering, 2021, 31(6): 8-13.

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Study on the Tanning Properties of TWS Tanning Agent in Pickling and Non-pickling Systems

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