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Research on Surface Treatment of Carbon Fiber and the Conductive Properties of Paper

The influences of the oxidative modification, coupling treatment and dispersing agent for carbon fiber dispersion and binding properties were investigated, and the relationships of different ratio of carbon fiber with the physical strength and electrical conductivity of the paper were analyzed. Meanwhile fiber surface morphology, zeta potential and absorbance slurry were tested. The result showed that: coupling modification significantly improved the dispersion performance of carbon fiber, superior than oxidative modification, the increase of the dispersion would enhance the conductivity of carbon fiber network, the effect of CPAM was best in four kinds of surface-active agent, and 30% content of carbon fiber achieved the "percolation threshold” of conductive material.