二氧化碳超临界流体条件下不同铬鞣条件坯革性能的比较

Compare the properties of various chrome tanned leather under the medium of carbon dioxide supercritical fluid

研究对比了二氧化碳超临界流体(SCF-CO2)条件下及常规条件下浸酸铬鞣、不浸酸铬鞣,及其所得坯革中铬的分布,得革率、坯革厚度以及油脂和孔率等变化情况,得出了在SCF-CO2条件下不浸酸铬鞣是可行的,其坯革面积得率比常规不浸酸铬鞣提高了4.09%;不仅如此,SCF-CO2条件下浸酸铬鞣坯革中的铬分布和孔率,比常规铬鞣所得坯革均有提高,铬在坯革中的分布均匀度几乎提高了3倍,孔率提高了1.27倍等研究成果。

Pigskins were chrome tanned under the SCF- CO2 medium either with or without pickling process. Then the properties of chrome tanned leather, including the distribution of the chrome, yield, thickness, decreasing effect and poriness, were compared with the normal ones. The results showed that, under the SCF- CO2 medium, it is suitable to chrome tan without pickling process and its yield is improved by 4.09 % to normal chrome tanning without pickling; and moreover, the levelness of chrome is improved by 3 times, and poriness is improved by 1. 27 times.