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Elastic multifunctional alginic acid composite fiber and preparation method thereof

A technology of composite fiber and alginic acid, which is applied in the field of textile materials, can solve the problems of restricting yarns, and achieve the effects of good mechanical properties, excellent antibacterial properties and biocompatibility

Active Publication Date: 2021-04-09
山东汇高智慧纺织科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three components of the formed yarn are a three-layer sheath-core composite structure, which combines three raw materials with different properties closely. The outer wrapping yarn is a seaweed fiber layer, the middle layer is a spandex filament layer, and the core The layer is a hemp fiber layer, and the yarn is mechanically combined with seaweed fibers and other fibers by spinning equipment, which limits the application of the yarn

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Elastic multifunctional alginic acid composite fiber and preparation method thereof
  • Elastic multifunctional alginic acid composite fiber and preparation method thereof
  • Elastic multifunctional alginic acid composite fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A preparation method of elastic multifunctional alginic acid composite fiber, comprising the following steps:

[0069] (1) Preparation of prepolymer: polyether diol and diisocyanate react to prepare prepolymer.

[0070] The polyether diol used is polytetramethylene ether diol and 4,4-diphenylmethane diisocyanate, and the solvent used for the reaction is dimethylacetamide. In step (1), the ratio of isocyanate group to hydroxyl group is NCO / OH=1.70, the prepolymerization reaction temperature is 50-60°C, and the reaction time is 2-3h.

[0071] (2) Chain extension reaction, preparation of spinning solution: Dilute the prepolymer obtained in step (1) in dimethylacetamide, add chain extender ethylenediamine and chain terminator diethylamine, chain extender and chain The addition ratio of the terminator is 15:1, react for 3 hours to obtain a polyurethane urea solution, adjust the solvent of dimethylacetamide, and control the concentration of the spinning stock solution to be ...

Embodiment 2

[0077] A preparation method of elastic multifunctional alginic acid composite fiber, comprising the following steps:

[0078] (1) Preparation of prepolymer: polyether diol and diisocyanate react to prepare prepolymer.

[0079] The polyether diol used is polytetramethylene ether diol and 4,4-diphenylmethane diisocyanate, and the solvent used for the reaction is dimethylacetamide. In step (1), the ratio of isocyanate group to hydroxyl group is NCO / OH=1.81, the prepolymerization reaction temperature is 55°C, and the reaction time is 2h.

[0080] (2) Chain extension reaction, preparation of spinning solution: Dilute the prepolymer obtained in step (1) in dimethylacetamide, add chain extender ethylenediamine and chain terminator piperidine, chain extender and chain termination Adding ratio of agent is 15:1, react for 3 hours, obtain polyurethane urea solution, adjust the solvent of dimethylacetamide, control the concentration of spinning stock solution to 35%wt, that is to the spi...

Embodiment 3

[0086] A preparation method of elastic multifunctional alginic acid composite fiber, comprising the following steps:

[0087] (1) Preparation of prepolymer: polyether diol and diisocyanate react to prepare prepolymer.

[0088] The polyether diol used is polytetramethylene ether diol and 4,4-diphenylmethane diisocyanate, and the solvent used for the reaction is dimethylacetamide. In the step (1), the ratio of the isocyanate group to the hydroxyl group is NCO / OH=1.70-1.90, the prepolymerization reaction temperature is 50-60°C, and the reaction time is 2-3h.

[0089] (2) Chain extension reaction, preparation of spinning solution: Dilute the prepolymer obtained in step (1) in dimethylacetamide, add chain extender ethylenediamine and chain terminator diethylamine, chain extender and chain The addition ratio of the terminator is 15:1, react for 3 hours to obtain a polyurethane urea solution, adjust the solvent of dimethylacetamide, and control the concentration of the spinning stoc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a preparation method of an elastic multifunctional alginic acid composite fiber. The preparation method comprises the following operation steps of (1) preparing a prepolymer; (2) carrying out a chain extension reaction to prepare a spinning solution; (3) spinning to prepare spandex fibers; (4) enabling the spandex fibers obtained in the step (3) to pass through a dissolving solvent solution tank, and washing through a clear water washing tank; (5) introducing the fibers obtained in the step (4) into a groove of sodium alginate, so that the sodium alginate is fully adsorbed on the surface layer of the spandex; and (6) curing and drying the fibers treated in the step (5) to obtain the elastic multifunctional alginic acid composite fiber, which has good mechanical properties, can be added in the step (5) as required, and has the advantages of low cost and simple operation.

Description

technical field [0001] The invention belongs to the field of textile materials, and in particular relates to an elastic multifunctional alginic acid composite fiber and a preparation method thereof. Background technique [0002] Sodium alginate is a polysaccharide extracted from seaweed plants. It has good biocompatibility, hygroscopicity and ion cross-linking gel performance, and is widely used in the field of biomedicine. Recently aroused people's strong research interest. Alginic acid is a kind of linear polyanionic polysaccharide composed of β-D-mannuronic acid (M unit) and α-L-guluronic acid (G unit). The structure is as follows: [0003] [0004] Among them, the small steric hindrance of the G unit is conducive to ion exchange and molecular cross-linking in the solution, and the moderate rigidity helps to stabilize the molecular structure of alginate; the M unit has a relatively compact structure and is not easy to undergo ion exchange. Because the G unit and the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/13D06M13/00D06M11/155D01F11/08D01F6/78D06M101/38
CPCD06M15/13D06M13/00D06M16/00D06M11/155D01F11/08D01F6/78D06M2101/38
Inventor 刘春梅
Owner 山东汇高智慧纺织科技集团有限公司