Effect of compression,resiliency and electrode location on measurement of electrical resistance of cotton fibers

The self-made fiber compression device was designed to investigate effect of compression and resiliency process and electrode location on electrical resistance measurement of cotton fiber assembly.It is intended to make reference for improving the accuracy and reproducibility of the measurement of moisture regain and electrical resistance of cotton fibers.The experimental results revealed that electrical resistance of cotton fiber assembly is approximately inverse proportion to the volume density of the fiber assembly.At higher density of fiber assembly,density of fiber assembly can be obtained by compression and resiliency.At the same density of fiber assembly,volume resistivity in compression process is less than that in resiliency process.There is d ifference between volume resistivity of cotton fiber assembly in compression d irection and in the d irection vertical to compression d irection.W ith the increase of density,the d ifference between them increases to some extent.At applied voltage of 10 V,volume resistivity of cotton fiber assembly in compression d irection is larger than that in the d irection vertical to compression d irection.H igher density of fiber assembly is in favor of resistance testing for cotton fiber assembly.Stable and accurate results can only be obtained in compression process.