Investigation of combinedN₂‐ andKMnO₄‐pretreatment to reduce stabilization time of polyacrylonitrile‐based carbon fibers

Abstract

Lightweight materials are continuously gaining importance due to their potential in the reduction of energy consumption. Carbon fibers and fiber reinforced composites exert impeccable mechanical properties while maintaining a low density. However, carbon fibers and their composites have significantly high production costs, which limit their application areas. Currently they are used in areas such as the aerospace and wind energy sectors where mechanical properties maintain a supremacy above the costs. In order to expand the application opportunities of carbon fibers, it is necessary to reduce the process time during their thermal conversion and thus ultimately reduce production costs. In the present article, an

Terpolymers of acrylonitrile, methyl acrylate, and 2‐acrylamido‐2‐methylpropane sulfonic acid for carbon fiber precursor: Effect of comonomers on the thermal stabilization of polyacrylonitrile copolymers

“…Carbon fiber is a fibrous carbon material with more than 90% of the total mass of carbon elements, which has the characteristics of high strength and high modulus, low density, corrosion resistance, electrical conductivity, thermal conductivity, creep resistance, and so forth. [1][2][3][4] Carbon fiber reinforced composite materials 5 have been widely used in many fields such as automobiles and high-speed railways, wind power blades, the medical industry, sports equipment, the national defense field, and high-tech aerospace. 6,7 Among them, polyacrylonitrile (PAN)-based carbon fiber has become the most stream carbon fiber species due to its excellent overall performance and more mature preparation technology, occupying more than 90% of the global carbon fiber market.…”

“…Carbon fiber is a fibrous carbon material with more than 90% of the total mass of carbon elements, which has the characteristics of high strength and high modulus, low density, corrosion resistance, electrical conductivity, thermal conductivity, creep resistance, and so forth 1–4 . Carbon fiber reinforced composite materials 5 have been widely used in many fields such as automobiles and high‐speed railways, wind power blades, the medical industry, sports equipment, the national defense field, and high‐tech aerospace 6,7 .…”

Influence of Oxygen Uptake on Pitch Carbon Fiber

“…[12] A wide variety of alternative stabilization techniques have been employed to improve the oxidation process such as plasma stabilization, sulfuric acid stabilization, nitric acid stabilization, and KMNO 4 stabilization of PAN. [13][14][15][16][17] The goal of these investigations is either to increase CF mechanical properties, reduce production cost, or investigate scientific phenomena. In 2010, Xu et al [18] investigated the use of gamma radiation to stabilize the fiber precursor structure.…”