Method for preparing coarse denier spandex fiber for hygienic material by adopting spandex silk waste
A technology of spandex waste silk and hygienic materials, which is applied in the direction of spinning solution preparation, fiber chemical characteristics, dry spinning method, etc. It can solve the problems of accelerated degradation, broken polymer stock solution, low apparent viscosity, etc., and achieve a stable period of improvement , Improve stability and improve fluidity
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specific Embodiment 1
[0031] A method for preparing coarse-denier spandex fibers for hygienic materials by utilizing spandex waste silk, the steps comprising:
[0032] (1), pretreatment:
[0033] (11) Sorting spandex waste silk and removing sundries;
[0034] (12) arrange the spandex waste silk after step (11) sorting into waste tow (waste silk is wound in the same direction);
[0035] (13) step (12) spandex bundle is cut to the staple fiber of about 3cm;
[0036] (14) Configure the cleaning solution according to the volume ratio of water: desiliconization oil additive = 100:5, and clean the short fiber in step (13) with the cleaning solution for 30 minutes, and the mass ratio of the short fiber to the cleaning solution is 1:5;
[0037] (15) drying the short fibers after cleaning in step (14) until the water content mass percentage is 0.01%, the drying temperature is 250° C., and the drying time is 260 min;
[0038] (2), pre-polymerization: according to the ratio of 10 parts of spandex waste sho...
specific Embodiment 2
[0042] A method for preparing coarse-denier spandex fibers for hygienic materials by utilizing spandex waste silk, the steps comprising:
[0043] (1), pretreatment:
[0044] (11) Sorting spandex waste silk and removing sundries;
[0045] (12) arrange the spandex waste silk after step (11) sorting into waste tow (waste silk is wound in the same direction);
[0046] (13) step (12) spandex bundle is cut to the staple fiber of about 10cm;
[0047] (14) According to the volume ratio of water: desiliconization oil additive = 100:1, configure the cleaning solution, and clean the short fiber in step (13) with the cleaning solution for 80 minutes, and the mass ratio of the short fiber to the cleaning solution is 1:10;
[0048] (15) drying the short fibers after cleaning in step (14) until the water content mass percentage is 2%, the drying temperature is 120° C., and the drying time is about 180 minutes;
[0049] (2), pre-polymerization: according to the ratio of 45 parts of spandex w...
specific Embodiment 3
[0053] A method for preparing coarse-denier spandex fibers for hygienic materials by utilizing spandex waste silk, the steps comprising:
[0054] (1), pretreatment:
[0055] (11) Sorting spandex waste silk and removing sundries;
[0056] (12) arrange the spandex waste silk after step (11) sorting into waste tow (waste silk is wound in the same direction);
[0057] (13) step (12) spandex bundle is cut to the staple fiber of about 5cm;
[0058] (14) According to the volume ratio of water: desiliconizing oil additive = 100:3, configure the cleaning solution, and clean the short fiber in step (13) with the cleaning solution for 50 minutes, and the mass ratio of the short fiber to the cleaning solution is 1:20;
[0059] (15) drying the short fibers after cleaning in step (14) until the water content mass percentage is 1%, the drying temperature is 150° C., and the drying time is about 200 minutes;
[0060] (2), pre-polymerization: according to the ratio of 30 parts of spandex wa...
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