Method for electron beam pre-irradiation grafting modification of aramid fibers

• Main Authors: LI QINGNUAN, XU LU, WU GUOZHONG
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2018
• Subjects: FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The invention discloses a method for electron beam pre-irradiation grafting modification of aramid fibers. The method comprises irradiating aramid fibers under an electron beam, feeding inert gas to the irradiated aramid fibers in a solution containing a polar solvent, a vinyl reactive monomer and ammonium ferrous sulfate to remove oxygen and carrying out heating for a reaction to obtain grafted aramid fibers, wherein the radiation absorption dosage is 25 to 320kGy in the radiation process and a mass ratio of the aramid fibers, polar solvent, vinyl reactive monomer to ammonium ferrous sulfateis 1: (20 to 45): (5 to 30): (0.02 to 0.07). The method realizes electron beam pre-irradiation grafting modification of aramid fibers, has reaction degree controllability, easily adjusts a fiber modification degree, has simple processes, is easy and has a wide application range and large industrialization potential. 本发明公开了种电子束预辐射接枝改性芳纶纤维的方法。该方法包括下述步骤：将芳纶纤维在电子束下辐射，然后将辐射后的芳纶纤维于包含极性溶剂、乙烯基反应单体和硫酸亚铁铵的溶液中通惰性气体除氧，之后进行加热反应，反应完成后即