High-water-absorption acrylic fiber and preparation method of same
A technology of acrylic fiber and high water absorption, applied in the direction of fiber chemical characteristics, dry spinning method, chemical post-treatment of synthetic polymer artificial filament, etc., can solve the problems of poor hydrophilicity of acrylic fiber, achieve good durability and reduce use cost , The effect of improving water absorption performance
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Embodiment 1
[0031] In this embodiment, the outer layer of a superabsorbent acrylic fiber is obtained by mixing and crosslinking polyacrylonitrile, polyvinyl alcohol and a crosslinking agent, wherein the polyacrylonitrile is 85wt%, the polyvinyl alcohol is 15wt%, and the crosslinking agent 0.5wt%. In this embodiment, pentaerythritol is used as the crosslinking agent.
[0032] combine figure 1 , the preparation steps of a kind of superabsorbent acrylic fiber of the present embodiment are as follows:
[0033] 1) Preparation of acrylic fiber spinning stock solution: dissolving polyacrylonitrile prepared by solution polymerization in dimethylformamide and degassing and filtering to obtain acrylic fiber spinning stock solution 1; polypropylene in acrylic fiber spinning stock solution 1 The weight ratio concentration of nitrile is 30%;
[0034] 2) Spinning: after the acrylic fiber spinning dope 1 output by the metering pump is sprayed out through the spinneret 2, it enters into the cylindrica...
Embodiment 2
[0040]In this embodiment, the outer layer of a superabsorbent acrylic fiber is obtained by mixing and crosslinking polyacrylonitrile, polyvinyl alcohol and a crosslinking agent, wherein the polyacrylonitrile is 95wt%, the polyvinyl alcohol is 5wt%, and the crosslinking agent is 1.5wt%. In this embodiment, polyglycerol polyglycidyl ether is used as a crosslinking agent.
[0041] combine figure 1 , the preparation steps of a kind of superabsorbent acrylic fiber of the present embodiment are as follows:
[0042] 1) Preparation of acrylic fiber spinning stock solution: dissolving polyacrylonitrile prepared by solution polymerization in dimethylformamide and degassing and filtering to obtain acrylic fiber spinning stock solution 1; polypropylene in acrylic fiber spinning stock solution 1 The weight ratio concentration of nitrile is 33%;
[0043] 2) Spinning: after the acrylic fiber spinning dope 1 outputted by the metering pump is sprayed out through the spinneret 2, it enters i...
Embodiment 3
[0048] In this embodiment, the outer layer of a superabsorbent acrylic fiber is obtained by mixing and crosslinking polyacrylonitrile, polyvinyl alcohol and a crosslinking agent, wherein the polyacrylonitrile is 90wt%, polyvinyl alcohol is 10wt%, and the crosslinking agent 1.0 wt%. In this example, sorbitol was used as the crosslinking agent.
[0049] combine figure 1 , the preparation steps of a kind of superabsorbent acrylic fiber of the present embodiment are as follows:
[0050] 1) Preparation of acrylic fiber spinning stock solution: dissolving polyacrylonitrile prepared by solution polymerization in dimethylformamide and degassing and filtering to obtain acrylic fiber spinning stock solution 1; polypropylene in acrylic fiber spinning stock solution 1 The weight ratio concentration of nitrile is 32%;
[0051] 2) Spinning: after the acrylic fiber spinning dope 1 output by the metering pump is sprayed out through the spinneret 2, it enters into a cylindrical spinning tun...
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Abstract
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