Method for preparing polyacrylonitrile bamboo charcoal composite fiber by in-situ polymerization
A polyacrylonitrile and composite fiber technology, applied in the direction of fiber chemical characteristics, spinning solution preparation, single-component synthetic polymer rayon, etc., can solve problems such as uneven dispersion, and achieve excellent fiber processing performance and good bulkiness , The effect of reducing manufacturing costs
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[0017] Example 1
[0018] (1) Weigh 234.4 Kg of acrylonitrile, 17.8 Kg of methyl acrylate, 2.6 Kg of ammonia itaconic acid, add 740.0 Kg of solvent dimethylformamide, 5.2 Kg of modified bamboo charcoal powder, and initiator azobisisobutyronitrile. 2.1 Kg, between 55~70 o React under the temperature condition of C to obtain spinning dope;
[0019] (2) Insulate the spinning solution in step (1) for 70 o C. Filter, wet spinning with minus 20% spinneret draft ratio, enter dimethyl formamide and deionized water mass ratio 35 / 65, coagulation bath temperature is 30 o C. Prepared bamboo charcoal polyacrylonitrile composite fiber spun yarn with certain mechanical properties;
[0020] (3) Pass the bamboo charcoal polyacrylonitrile composite fiber nascent yarn in step (2) through 50 o C washing, 1.2 times draft, 70 o C washing, 1.1 times draft, 98 o C water washing, boiling water drawing 8 times, steam drawing 1.6 times, oiling, drying, winding and winding, winding speed of 88 m / min, the tensi...
Example Embodiment
[0021] Example 2
[0022] (1) Weigh 234.4 Kg of acrylonitrile, 17.8 Kg of methyl acrylate, 2.6 Kg of ammonia itaconic acid, add 740.0 Kg of solvent dimethyl sulfoxide, 5.2 Kg of modified bamboo charcoal powder, and initiator azobisisobutyronitrile. 2.1 Kg, between 55~70 o React under the temperature condition of C to obtain spinning dope;
[0023] (2) Insulate the spinning solution in step (1) for 70 o C. Filtration, wet spinning with a spinneret draft ratio of minus 20%, the mass ratio of dimethyl sulfoxide to deionized water is 35 / 65, and the coagulation bath temperature is 30 o C. Prepared bamboo charcoal polyacrylonitrile composite fiber spun yarn with certain mechanical properties;
[0024] (3) Pass the bamboo charcoal polyacrylonitrile composite fiber nascent yarn in step (2) through 50 o C washing, 1.2 times draft, 70 o C washing, 1.1 times draft, 98 o C water washing, boiling water drawing 8 times, steam drawing 1.6 times, oiling, drying, winding and winding, winding speed o...
Example Embodiment
[0025] Example 3
[0026] (1) Weigh 270.5 Kg of acrylonitrile, 20.6 Kg of methyl acrylate, 2.9 Kg of ammonia itaconic acid, add 700.0 Kg of solvent dimethylformamide, 6.0 Kg of modified bamboo charcoal powder, and initiator azobisisobutyronitrile. 2.3 Kg, between 55~70 o React under the temperature condition of C to obtain spinning dope;
[0027] (2) Insulate the spinning solution in step (1) for 70 o C. Filtration, wet spinning with a spinneret draft ratio of minus 10%, the mass ratio of dimethylformamide and deionized water is 35 / 65, and the coagulation bath temperature is 40 o C. Prepared bamboo charcoal polyacrylonitrile composite fiber spun yarn with certain mechanical properties;
[0028] (3) Pass the bamboo charcoal polyacrylonitrile composite fiber nascent yarn in step (2) through 50 o C washing, 1.2 times draft, 70 o C washing, 1.2 times draft, 98 o C water washing, boiling water drawing 6 times, steam drawing 1.9 times, oiling, drying, winding and winding, winding speed of...
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