Dry-wet spinning process for agar fiber
A dry-wet spinning and agarose technology, which is applied in the field of fiber spinning, can solve the problems of low fiber mechanical strength, high workshop requirements, and difficult industrialization, so as to enhance mechanical strength, avoid safety hazards, and protect the environment. The effect of little pollution
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[0027] Example 1: Dry and wet spinning
[0028] Add 120 grams of agar to 1080 grams of DMSO, stir and dissolve at 80°C to obtain a 10% (mass percentage) agar solution, filter, defoam and let stand for 8 hours to make a spinning solution. Filter the above After defoaming, the spinning solution is gelatinized by the air layer (the length of the air layer is 5mm) through the dry-wet spinning machine; the gelatinized trickle enters the coagulation bath for coagulation and drawing, the coagulation bath is water, and the coagulation bath temperature It is at room temperature and the stretching ratio of the fiber is 1.1. The fiber is soaked in an oil agent (silicone oil content of 0.1% (v / v)) for 4 hours, washed, dehydrated with ethanol, and dried to obtain a fiber material. The scanning electron microscope picture is as image 3 , 4 As shown in the figure, it can be seen that the fibers of dry and wet spinning are thinner and the inside of the fibers is denser.
Example Embodiment
[0029] Example 2: Dry and wet spinning
[0030] Add 60 grams of agar in 440 grams of DMF, fully stir and dissolve at 80°C to obtain a 12% (mass percentage) agar solution, filter, defoam and let stand for 6 hours to make a spinning solution. After filtering and defoaming, the spinning solution is gelatinized by the air layer (the length of the air layer is 10mm) through the dry-wet spinning machine; the gelatinized trickle enters the coagulation bath for coagulation and drawing. The coagulation bath is water, and the coagulation bath The temperature is 30°C, the draft ratio of the fiber is 1.2, and the fiber is soaked in an oil agent (0.1% (v / v) of amino silicone oil) for 4 hours, washed, dehydrated with ethanol, washed, and dried to obtain a fiber material.
Example Embodiment
[0031] Example 3: Dry and wet spinning
[0032] Add 70 grams of agar to 430 grams of DMSO, stir and dissolve at 80°C to obtain a 14% agar solution, filter, deaerate and let stand for 6 hours to make spinning solution. The spinning solution is gelatinized through the air layer (air layer length 12mm) through the wet-dry spinning machine; the gelatinized trickle enters the coagulation bath for coagulation and drawing. The coagulation bath is water, and the coagulation bath temperature is 10°C. The draft ratio of the fiber is 1.2, and the fiber is soaked in an oil agent (0.05% (v / v) of dimethyl silicone oil) for 10 hours, washed, dehydrated with ethanol, washed, and dried to obtain a fiber material.
[0033] The mechanical properties of the agar fibers obtained in Comparative Example 1, Examples 1, 2, and 3 were tested. The results showed that the dry fracture strength of the agar fibers reached 1.6 cN / dtex and 2.5 cN / dtex, 2.8 cN / dtex, 3.1 cN / dtex. It can be seen that with the sa...
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