Spinneret plate for polyacrylonitrile-based carbon fiber precursor

• Main Authors: HUO ZHAOMING, WANG CHUNXIAO, ZHAO JINGDONG, SONG LIZHI, SHANG XIAOMING, ZHOU ZHANFA, YANG WENTAO, YANG FENG
• Format: Patent
• Language: Chinese; English
• Published: 25.03.2022
• Subjects: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The spinneret plate is provided with a spinneret plate body, a circular groove is formed in the middle of the spinneret plate body, spinneret orifices are evenly distributed in the circular groove, each spinneret orifice comprises an outlet portion, a neck portion and a flow guide portion, the upper portion of each flow guide portion is a cylindrical hole, and the lower portion of each flow guide portion is a conical hole. The outlet part is connected with the flow guide part through the neck part, and an outlet groove is formed in the outlet part. The utility model solves the technical problems that the surface of the precursor produced by the round spinneret plate hole of the existing high-quality polyacrylonitrile-based carbon fiber precursor is smooth, but the hanging glue is low, and the cohesive force is not enough, so that the hanging glue and the cohesive force of the precursor need to be increased during carbonization, and the application field is influenced. The device can be widely applied to the p