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Superabsorbent composite fiber and preparation method thereof

A composite fiber, high water absorption technology, applied in the chemical characteristics of fibers, cellulose/protein conjugated rayon, wet spinning, etc., can solve the problems of difficult fiber formation, low fiber strength, high technological difficulty and high cost, and achieve The effect of low cost and simple process

Active Publication Date: 2016-05-04
厦门百美特生物材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The spinning dope prepared by pure CMC needs to use high-purity organic solvent as the coagulation liquid, but the dehydration and coagulation speed is slow, so it is not easy to form fibers, the strength of the prepared fibers is low, the subsequent spinning is difficult, the process is difficult and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: the preparation of a kind of superabsorbent composite fiber

[0027] (1) 70% by mass, CMC with a degree of substitution of 0.5 and 30% SA are added into pure water, and are prepared into a spinning stock solution after dissolving, filtering, defoaming, and standing still, with a concentration of 5%; (2) The original liquid is extruded, and after metering and filtering, it is sprayed into the coagulation liquid from the spinneret hole to form primary fibers. The coagulation solution is a mixed solution of 65% methanol, 3.0% by mass calcium chloride, and 2.0% by mass zinc chloride. (3) The as-spun fiber is respectively entered into the drafting liquid and the washing liquid to be drawn and washed, and the drafting and washing liquid is methanol with a concentration of 80%. (4) Dry the cleaned fiber with a hot air drying oven, cut it into sections, and pack it.

[0028] The fibers prepared in this example can absorb physiological saline at a rate of 20 time...

Embodiment 2

[0029] Example 2: Preparation of a super absorbent composite fiber

[0030] (1) 95% by mass, CMC with a degree of substitution of 0.9 and 5% SA are added into pure water together, and after dissolving, filtering, defoaming, and standing still, they are prepared into a spinning stock solution with a concentration of 2%; (2) The original liquid is extruded, and after metering and filtering, it is sprayed into the coagulation liquid from the spinneret hole to form primary fibers. The coagulation solution is a mixed solution of 95% acetone and ethanol (the molar ratio of acetone and ethanol is 1:1) mixed with an organic solvent and 2.0% by mass of calcium chloride. (3) Put the as-spun fiber into the drafting solution and the washing solution for drawing and washing respectively. The drawing and washing solution is a mixed organic solvent of 5% acetone and ethanol (the molar ratio of acetone and ethanol is 1:1). (4) Dry the cleaned fiber with a hot air drying oven, cut it into sec...

Embodiment 3

[0032] Example 3: Preparation of a super absorbent composite fiber

[0033] (1) 85% by mass, CMC with a degree of substitution of 0.7 and 15% SA are added into pure water together, and are prepared into a spinning stock solution after dissolving, filtering, defoaming, and standing still, with a concentration of 3.6%; (2) adding The original liquid is extruded, and after metering and filtering, it is sprayed into the coagulation liquid from the spinneret hole to form primary fibers. The coagulation solution is a mixed solution of 80% ethanol and 3.5% by mass calcium chloride. (3) The as-spun fibers are respectively entered into the drafting liquid and the washing liquid to be drawn and washed, and the drafting and washing liquids are 10% ethanol. (4) Dry the cleaned fiber with a hot air drying oven, cut it into sections, and pack it.

[0034] The fibers prepared in this example can absorb physiological saline at a rate of 30 times, and the time to absorb saturated water is 60...

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PUM

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Abstract

The invention discloses a superabsorbent composite fiber and a preparation method thereof. The fiber component comprises a sodium carboxymethylcellulose and alginate, wherein the content of sodium carboxymethylcellulose is not less than 70%. The preparation method of the fiber uses sodium carboxymethyl cellulose (hereinafter referred to as CMC) as the main raw material and alginate (hereinafter referred to as SA) as an auxiliary material; a wet spinning process is employed; a mixed solution of a volatile organic solvent containing a proper amount of water and calcium chloride and / or zinc chloride is used as a coagulation liquid; and a volatile organic solvent containing an appropriate amount of water is used a drawing / washing liquid. The prepared composite fiber has the advantages of high water-absorbing speed, high water absorption and water absorption into the gel, and can be prepared into acupunctured non-woven fabric or blend of hot air non-woven fabric for medical dressings, sanitary napkins, diapers, incontinence pads and other disposable medical supplies.

Description

technical field [0001] The invention relates to the textile field, in particular to a superabsorbent composite fiber and a preparation method thereof. Background technique [0002] Disposable sanitary products such as sanitary napkins, paper diapers, incontinence pads, etc., have the common requirements of high water absorption rate, fast water absorption speed and no reverse osmosis for the core water-absorbing materials used. [0003] At present, the water-absorbing materials used in sanitary napkins and paper diapers are fluff pulp and / or superabsorbent resin particles such as polyacrylates, especially polyacrylate resins, whose water absorption rate (pure water) can reach hundreds of times, but its defect lies in the water absorption speed. Not ideal. Its water absorption is easily affected by ions in water. For example, its absorption rate of normal saline is only 40 to 60 times. Under normal use, it takes more than 5 minutes to absorb salty urine, blood, etc. to a full...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/18D01D5/06
CPCD01D5/06D01F8/02D01F8/18
Inventor 林丽雯蓝煌琴吴晓玲邱冬刘松林黄福龙
Owner 厦门百美特生物材料科技有限公司
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