METHOD FOR PREPARING ARAMID PAPER AND THE ARAMID PAPER OBTAINED THEREFROM

摘要

The present invention provides a method for preparing aramid insulating paper,comprising the steps of: providing aramid pulp slurry and aramid short fiberslurry atrespective desired concentrations; blending, beating and fluffing the aramidpulpslurry and the aramid short fiber slurry in a given ratio to afford a paperpulp at adesired concentration; transiting the paper pulp to a papermaking machinefittedwith a head box to form and make wet paper sheets; pressing to dewater the wetpaper sheets and drying the dewatered paper sheets; and calendering the driedpaper sheets at a high temperature to obtain the aramid insulating paper,wherein instep iii), at least one ultrasonic generator is mounted on the head box toapplydirectional ultrasonic waves to the paper pulp flowing through the heat box.Thearamid insulating paper prepared according to the method of the invention hasenhanced strength, smoothness and uniformity.