Method for producing flame-retardant and antibacterial fibers and obtained flame-retardant antibacterial fibers

• Main Authors: YE GUANGDOU, LIU SANMIN, SHI MEIWU, JIANG MENGJIN
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2018
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

The invention relates to a method for producing flame-retardant and antibacterial fibers and the obtained flame-retardant antibacterial fibers. The method comprises the following steps: a) dissolvingpolyvinyl alcohol in water to obtain spinning dope; b) applying an aqueous solution of a tetrakis(hydroxymethyl)phosphonium compound; c) performing spinning with a mirabilite wet method, and performing solidification and stretching to obtain nascent fibers; d) drying the nascent fibers obtained in step c) to obtain flame-retardant precursor fibers; e) performing ammonia fumigating on the flame-retardant precursor fibers obtained in step d) to obtain ammonia fumigated fibers; f) oxidizing the ammonia fumigated fibers obtained in step e); g) performing washing, oiling and drying optionally to obtain the flame-retardant and antibacterial fibers, wherein during ammonia fumigation in the step e), ammonia gas is applied in an insufficient amount relative to that of the tetrakis(hydroxymethyl)phosphonium compound applied