Method for manufacturing cellulose fibroin composite fiber by using solvent method
A composite fiber and cellulose technology, applied in spinning solution preparation, fiber treatment, wet spinning, etc., can solve environmental pollution and other problems, achieve good mechanical strength, benefit environmental protection and operator health, and process energy consumption and low operating costs
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Embodiment 1
[0027] Mix 9.95 parts of pulverized pulp and 0.05 parts of silk protein, mix well with 100 parts of [BMIM]Cl (1-butyl-3-methyl-imidazole hydrochloride) ionic liquid, and stir at 45°C for 24 hours, A spinning solution is obtained.
[0028] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 5% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 25°C. After 10% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 5 m / min, and the fiber with a strength of 3.2 cN / dtex is obtained.
Embodiment 2
[0030] Mix 9 parts of pulverized pulp and 1 part of silk protein, mix them evenly with 200 parts of [BMIM]Cl ionic liquid, and stir at 100°C for 120 hours to obtain a spinning solution.
[0031] After the spinning solution is filtered and defoamed, it enters the water coagulation bath through the porous spinneret, and the temperature of the coagulation bath is 15°C. After 1% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 20 m / min, and the fiber with a strength of 3.5 cN / dtex is obtained.
Embodiment 3
[0033] Mix 9 parts of pulverized pulp and 1 part of silk protein, mix well with 40 parts of [EMIM]Ac (1-ethyl-3-methylimidazolium acetate) ionic liquid, and stir at 60°C for 80 hours to obtain spinning solution.
[0034] After the spinning solution is filtered and defoamed, it enters a coagulation bath containing 25% ionic liquid through a porous spinneret, and the temperature of the coagulation bath is 55°C. After 8% plasticizing and stretching, then through procedures such as washing, bleaching, oiling, and drying, the spinning speed is 30 m / min, and the fiber with a strength of 4.0 cN / dtex is obtained.
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