ULTRAFINE CARBON FIBER YARN OBTAINED BY SUBJECTING OPENED CARBON FIBER YARN FROM CARBON FIBER RAW YARN TO TWISTING PROCESSING, AND METHOD FOR PRODUCING SAME

摘要

[Problem] The present invention relates to ultrafine carbon fiber yarn and a method for producing the same. More specifically, the present invention relates to ultrafine carbon fiber yarn obtained by subjecting opened carbon fiber yarn from carbon fiber raw yarn to twisting processing, and a method for producing the same, especially to ultrafine yarn obtained by laminating various ultrathin films on opened carbon fibers and then finishing the same using a slitting machine, and a method for producing the same. [Solution] (1) Production of desired composite yarn from opened carbon fibers by opening, slitting, twisting, and combining with a composite yarn, and (2) production of composite yarn by performing the process of laminating a film (a film of a composite material) simultaneously with the process of opening opened carbon fibers, performing slitting and twisting, and performing heat treatment for removing stress. The yarns of the present invention have tensile strength improved by 10% or more compared with base yarn of raw yarn and can be used for a wide range of applications. (Selected drawing) FIG. 1