Manager Hao (pre oxygenation thread): 13831164999
Manager Shi (pre oxygenation wire): 17332928150
Manager Gu (Pre oxygenation Silk): 13833138900
Manager Zhao (woven fabric, pre impregnated fabric, prefabricated body): 15028196018
Manager Zhang (woven fabric, axial fabric): 13703314888
Manager Zhao (Composite Products): 13944687090
Manager Steve Duan:15704489366
Address: 226 Shifu East Road, Gaocheng District, Shijiazhuang City, Hebei Province
Pre-oxidized fiber (also called stabilized fiber) is a critical intermediate product in the industrial production of carbon fiber, formed by subjecting carbon fiber precursor filaments to a controlled high-temperature oxidation process (pre-oxidation).
Pre-oxidized fiber refers to the thermoset fibrous material obtained by heating organic precursor filaments (mainly polyacrylonitrile (PAN)-based, pitch-based, or rayon-based filaments) in an oxidizing atmosphere (usually air) at a temperature of 200–300°C, triggering a series of chemical reactions (cyclization, dehydrogenation, oxidation cross-linking) to transform the original thermoplastic precursor into a non-melting, structurally stable fiber.
Structural Transformation: The linear, thermoplastic molecular chains of the precursor are converted into a rigid, three-dimensional cross-linked network structure. This eliminates the precursor’s tendency to melt or stick together during subsequent high-temperature carbonization (1000–1500°C) and graphitization (2000–3000°C).
Chemical Stability: A large number of conjugated double bonds and oxygen-containing functional groups are formed on the fiber surface, which enhance the fiber’s thermal stability and lay the foundation for the high carbon content and mechanical strength of the final carbon fiber.
Process Transition Role: Pre-oxidized fiber acts as a "bridge" between the precursor and final carbon fiber—it retains the filamentary shape of the precursor while gaining the heat resistance needed to withstand extreme temperatures in subsequent carbon fiber production steps.
It solves the core problem of carbon fiber manufacturing: preventing precursor filaments from melting and decomposing during high-temperature carbonization, ensuring the formation of high-strength, high-modulus carbon fiber with a continuous, oriented structure.
Copyright © Hebei Carbon Valley Carbon Fiber Co.,
Ltd. All rights reserved.
Manager Hao (Pre-oxidized Fiber): 13831164999,hjh@hbtangu.com
Manager Shi (Pre-oxidized Fiber): 17332928150,sj@hbtangu.com
Manager Gu (Pre-oxidized Fiber): 13833138900
Manager Zhao (Woven Cloth, Prepreg Cloth, Preform): 15028196018,zb@hbtangu.com
Manager Zhang (Woven Cloth, Axial Cloth): 13703314888
Manager Zhao (Composite Products): 13944687090, zqy@hbtangu.com
Manager Steve Duan:15704489366,245140980@qq.com
Email: 245140980@qq.com
Address: No. 226, East Shifu Road, Gaocheng District, Shijiazhuang City, Hebei Province
