Oxidation Resistance Reseach of Aramid Fiber Needle-Punched Nonwovens Being Treated by High Temperature

This article studied the dimensional stability and mechanics properties of the PSA needle-punched nonwovens fabric,which were treated in the different concentrations of sulphuric acid solution after dealing.The result showed that the dimension and aperture of the nonwovens fabric has no significant changes;the thickness,the break strength and bursting strength showed an overall downward trend also.