Influence of Carbonization on Physical Properties of Modified PAN Precursor

摘要

The effect of modification of polyacrylonitrile (PAN) fibers with cobaltous chloride on the microstructure and mechanical properties of the high-performance carbon fibers during carbonization are reported in this article. The carbon fibers developed from the modified PAN fibers have increased crystal size, crystallinity, and density, and also improved tensile strength and modulus during carbonization. These fibers have a lower formation temperature of carbon basal planes than those fibers which developed from the original one. A higher stacking size, or a higher carbon basal plane in crystalline, is one of the reasons to improve the modulus and conductivity of the final carbon fibers.