Comparison and research about resistance to water penetration-hydrostatic pressure test methods for textile
4 kinds of hydrostatic pressure methods commonly used of resistance to water penetration testing were compared and analyzed in this paper.Through observation and analysis the test end point phenomenon of common waterproof fabric,test comparison between the method with metal mesh and without metal mesh,and test comparison between the low hydraulic pressure method and the high hydraulic pressure method,to analyze the resistance to water penetration performance of different waterproof fabrics.The results show that,the multi-layer composite fabric and coated fabric often obtain higher hydrostatic pressure value in the test,and the typical third spot of water droplets cannot be observed,which will affect the determination of the end point of the experimenter and lead to the difference of the test results.the metal mesh installed in the test can disperse the force on the fabric surface,which can effectively prevent the sample from excessive deformation during the pressure process,but often obtain a higher hydrostatic pressure value.In the test process of high hydraulic pressure method,the water has not penetrated the fabric surface before reaching the pressure limit of the sample itself,causing the sample to burst and testing termination.This method is more suitable for the sample whose pressure value is much higher than the hydrostatic pressure value.
waterproof fabricresistance to water penetrationhydrostatic pressure valueend pointpressure rate
NETL
NSTL
万方数据
