Study on the Effect of Formation Index on the Strength and Pore Properties of Carbon Paper-base Paper
In this study,carbon fiber was used as raw material to prepare carbon paper-base paper with different formation properties by changing the type of dispersant,the dispersion stability and uniformity of carbon fiber suspension were investigaled,and the relationship be-tween formation index and permeability,tensile strength and porosity was discussed.Compared with single APAM,TOCNs and PU disper-sants,the dispersion stability and uniformity of carbon fiber suspension dispersed by composite dispersants system composed of 0.1％APAM and 1％PU were improved,which had the best formation index of 10.32.With the decrease of formation index,the thickness deviation of car-bon paper bas-paper decreased from 21.76 mm to 0.96 mm,the tensile strength increased from 0.15 kN/m to 1.68 kN/m,the porosity de-creased from 93.5％to 90.5％,and the permeability decreased from 1 658.9 L/(m2·s)to 1 171.5 L/(m2·s).
万方数据
维普
