Device and method for preparing ultra-high molecular weight polyethylene dyed fibers at low temperature and normal pressure

• Main Authors: LIN YIYAN, DAI JIAMU, ZANG CHUANFENG, ZHANG GUANGYU, LIU RONG, ZHANG JUNXIONG, ZHANG YU, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2022
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM; DYEING OR PRINTING TEXTILES; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE

The invention relates to the technical field of textile material dyeing, in particular to a device and method for preparing low-temperature normal-pressure ultra-high molecular weight polyethylene dyed fibers, and the method comprises the following steps: adding ultra-high molecular weight polyethylene and a dyeing assistant into a hydrocarbon solvent to prepare a spinning solution; feeding the spinning solution into a double-screw extruder, and extruding the spinning solution through a spinneret plate; sequentially extracting, dyeing, drying and thermally stretching to obtain the ultra-high molecular weight polyethylene dyed fiber. In the UHMWPE fiber nascent filament stage, the gel fibers obtained in the extraction procedure are soaked in dye liquor, a dyeing agent enters micropores of a loose network structure of the gel fibers through repeated ultrasonic treatment, dye molecules are firmly locked in the fibers through subsequent drying, high-temperature stretching and other processes, and the fibers are f