CARBON FIBER COATED WITH METAL OXIDE AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To produce a carbon fiber coated with a metal oxide, or the like, having characteristic mechanical properties of carbon fiber comprising high strength and high elastic modulus while maintaining the characteristic feature of metal oxide. SOLUTION: The carbon fiber, strand, or the like, coated with the metal oxide and having a tensile load at break of >=1.5 g and a tensile elongation of >=0.5% is produced by covering a carbon fiber having a diameter of 3-10μm with 1-100 wt.% metal oxide based on the weight of the fiber. The metal oxide is deposited on the surface of the carbon fiber by immersing a carbon fiber having a diameter of 3-10μm, a tensile load at break of >=1.5 g and a tensile elongation of >=0.5% in a solution of a metal oxide precursor and irradiating with microwave radiation.