Preparation method of magnetic viscose
A technology of viscose fiber and viscose staple fiber, which is applied in the field of preparation of magnetic viscose fiber, can solve problems affecting fiber strength, achieve good breaking strength and elongation at break, and have good application prospects
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[0017] The invention discloses a preparation method of magnetic viscose fiber, which comprises the following process steps:
[0018] (1) Mix the ferrous salt solution and the copper salt solution with a molar ratio of 1 to 2:1 evenly, add lye to adjust the pH value of the solution to 12, stir and react for 1 to 2 hours, and obtain a magnetic colloid solution;
[0019] (2) adding viscose fiber sulfonate into a sodium hydroxide solution with a concentration of 1-5 mol / L, stirring and reacting at 30-40° C. for 3-8 hours to obtain a viscose fiber solution;
[0020] (3) Add the viscose staple fiber solution in the step (2) to the magnetic colloid solution in the step (1), control the volume ratio of the viscose staple fiber solution and the magnetic colloid solution to be 20~30:1, at 80~ Stir in a water bath at 90°C for 2 to 3 hours, and prepare magnetic viscose fibers through spinning, post-processing and drying processes.
[0021] In step (1), the mol ratio of described ferrous ...
Embodiment 1
[0027] (1) Mix the ferrous salt solution and the copper salt solution with a molar ratio of 1:1 evenly, add lye to adjust the pH value of the solution to 12, stir and react for 1 hour, and obtain a magnetic colloid solution;
[0028] (2) adding viscose fiber sulfonate into a sodium hydroxide solution with a concentration of 1 mol / L, stirring and reacting at 30° C. for 3 hours to obtain a viscose fiber solution;
[0029] (3) Add the viscose staple fiber solution in the step (2) to the magnetic colloid solution in the step (1), control the volume ratio of the viscose staple fiber solution to the magnetic colloid solution to be 20:1, and put it in a water bath at 80°C Under stirring for 2 hours, the magnetic viscose fiber was obtained through spinning, post-treatment and drying processes.
Embodiment 2
[0031] (1) Mix the ferrous salt solution and the copper salt solution with a molar ratio of 1.5:1 evenly, add lye to adjust the pH value of the solution to 12, stir and react for 1.5h, and obtain a magnetic colloid solution;
[0032] (2) adding viscose fiber sulfonate into a sodium hydroxide solution with a concentration of 3 mol / L, stirring and reacting at 35° C. for 5 hours to obtain a viscose fiber solution;
[0033] (3) Add the viscose staple fiber solution in the step (2) to the magnetic colloid solution in the step (1), control the volume ratio of the viscose staple fiber solution to the magnetic colloid solution to be 25:1, and put it in a water bath at 85°C Under stirring for 2.5 hours, the magnetic viscose fiber was prepared through spinning, post-processing and drying processes.
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Abstract
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