鞣制方法对皮革电导率的影响

Influence of Tanning Methods on Leather Electrical Conductivity

在1个大气压、相对湿度60%情况下,利用皮革电导率测试仪,分别研究了铬鞣、铁鞣、醛鞣3种鞣制作用对猪皮成品革电导率的影响。研究发现,在相同测试条件下,对于同一批酸皮的对应部位,采用不同鞣制方法所制得的成革的电导率各不相同,醛鞣革的电导率最大,铁鞣革的电导率次之,铬鞣革的电导率最小;不同鞣制方法所制得的皮革材料的电导率从总体上都表现为随温度的增加而增大;在相同的测试温度变化范围,铬鞣革的电导率增加量最小,铁鞣革的次之,醛鞣革的最大。研究还发现经过铬鞣、铁鞣、醛鞣后的猪皮成革都属于有机半导体材料。

The influence of tanning methods （ chrome tanning, iron tanning and glutaraldehyde tanning） on leather electrical conductivities was analyzed with leather conductivity measurement device under the following conditions： pressure 1.01×10^5Pa and relative moisture 60%. It shows that nder the same measurement conditions, the conductivities of leathers tanned by different methods are different, and the conductivity of glutaraldehyde tanned leather is the biggest, then the iron tanned leather, the chrome tanned leather has the smallest conductivity. The conductivity of leather increases with the increase of temperature. Under the same temperature scope, the increase of leather conductivity is in following order： glutaraldehyde tanned leather〉 iron tanned leather〉 chrome tanned leather. And after tanning, the leather becomes organic semiconductor.