Industrial Technology Research Institute

Hsiao-Chuan Chang

Jen-Chang Yang

Yu-Ting Chen

Tun-Fun Way

Lien-Tai Chen

Jiun-Jy Chen

Jin-Chyueh Lin

In one embodiment of the disclosure, a composite raw material and a method for forming the same are provided. The method includes sulfonating a polycyclic aromatic compound to form a polycyclic aromatic carbon sulfonate (PCAS); and mixing the polycyclic aromatic carbon sulfonate and a polyacrylonitrile (PAN) to form a composite raw material. In another embodiment of the disclosure, a carbon fiber containing the composite raw material described above and a method for forming the same are provided.

Composite raw material, carbon fiber material and method for forming the same

Soluble wholly aromatic polyamide is obtained by low-temperature polycondensation in an amide solvent such as N-methyl-2-pyrrolidone. The reaction mixture is neutralized with an alkali and spun into fibers by wet spinning, coagulated in a salt-free aqueous solution of an organic solvent, preferably the polymerization solvent, and subsequently drawn in another aqueous solution of the same organic solvent, both solutions being substantially at ambient temperatures below 50.degree. C. but above freezing, More than 60% of the total fiber drawing is executed in this low-temperature draw stage.

Process for preparing fibers of soluble wholly aromatic polyamides

Growing community of inventors

Hsinchu County, Taiwan

Hsiao-Chuan Chang