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Degradable flame-retardant polylactic acid elastic fiber and preparation method thereof

An elastic fiber, polylactic acid technology, applied in the field of fibers, can solve the problems of weak physical properties and low tensile strength of fibers

Pending Publication Date: 2021-05-18
LANGSHA KNITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing polylactic acid fiber has the problems of weak physical properties and low tensile strength of the fiber when it is processed and used.

Method used

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  • Degradable flame-retardant polylactic acid elastic fiber and preparation method thereof
  • Degradable flame-retardant polylactic acid elastic fiber and preparation method thereof

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preparation example Construction

[0018] Polylactic acid fiber is made of starchy agricultural products such as corn, wheat, and sugar beet. After fermentation to produce lactic acid, it is then polycondensed and melt-spun to make polylactic acid fiber. It is a kind of raw material that can be planted and is easy to plant. Naturally degradable synthetic fibers. It can be decomposed into carbon dioxide and water by microorganisms in soil or seawater. When burned, it will not emit poisonous gas and cause pollution. It is a sustainable ecological fiber. Its fabric has good hand feeling and drapability, anti-ultraviolet rays, low flammability and excellent processing performance. However, the existing polylactic acid fiber has the problems of weak physical properties and low tensile strength of the fiber during processing and use. In order to solve the above technical problems, the present invention proposes a degradable flame-retardant polylactic acid elastic fiber. The parts by weight are composed of the follow...

Embodiment 1

[0026] According to the weight ratio of 1:2:1:4, collagen, active peptide, chitosan, and hydroxyapatite were weighed and fully mixed to prepare the modifier;

[0027] After mixing corn flour and water, add protease at 0.2% of the mass of dry corn flour, add glucose oxidase at 0.1% of the mass of dry corn flour, enzymolyze at 50°C for 2 hours, and decompose the enzymatically hydrolyzed corn flour Drying and crushing to obtain enzymatic cornstarch;

[0028] Weigh each component according to the following parts by weight: 45 parts of polylactic acid, 10 parts of modifier, 8 parts of flame retardant, 3 parts of plasticizer, 10 parts of enzymatic cornstarch; The weight ratio is 1.5:1, and the hydrogen peroxide solution with a concentration of 30% is soaked for 1 hour. While soaking, the polylactic acid is irradiated with ultraviolet rays with a wavelength of 315nm; after soaking, the polylactic acid is taken out, dried, and pulverized. , Mix and react the pulverized polylactic aci...

Embodiment 2

[0030] According to the weight ratio of 3:5:2:6, collagen, active peptide, chitosan, and hydroxyapatite were weighed and fully mixed to prepare the modifier;

[0031] After mixing corn flour and water, add protease at 0.8% of the mass of dry corn flour, add glucose oxidase at 0.15% of the mass of dry corn flour, enzymatically hydrolyze at 60°C for 6 hours, and decompose the enzymatically hydrolyzed corn flour Drying and crushing to obtain enzymatic cornstarch;

[0032] Weigh each component according to the following parts by weight: 65 parts of polylactic acid, 16 parts of modifier, 16 parts of flame retardant, 5 parts of plasticizer, 14 parts of enzymatic corn starch; The weight ratio is 3:1, and the hydrogen peroxide solution with a concentration of 40% is soaked for 3 hours. While soaking, the polylactic acid is irradiated with ultraviolet light with a wavelength of 280nm; after soaking, the polylactic acid is taken out, dried, and pulverized. , Mix and react the pulverize...

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Abstract

The invention discloses the technical field of fibers, and provides degradable flame-retardant polylactic acid elastic fiber and a preparation method thereof. The degradable flame-retardant polylactic acid elastic fiber is composed of the following components of polylactic acid, a modifier, a flame retardant, a plasticizer and enzymolysis corn starch; and the modifier is formed by mixing collagen, active peptide, chitosan and hydroxyapatite. The modifier used in the invention has relatively high biomimetic property, can significantly improve the biocompatibility, bioactivity and mechanical properties of a polylactic acid material, and improves the cell affinity of the polylactic acid, so that the prepared fiber has better physical properties and flame retardant effect; and the elasticity of the prepared fiber is improved, so that the fiber has better tensile strength and bending strength.

Description

technical field [0001] The invention relates to the field of fiber technology, in particular to a degradable flame-retardant polylactic acid elastic fiber and a preparation method thereof. Background technique [0002] Polylactic acid fiber is made of starchy agricultural products such as corn, wheat, and sugar beet. After fermentation to produce lactic acid, it is then polycondensed and melt-spun to make polylactic acid fiber. It is a kind of raw material that can be planted and is easy to plant. Naturally degradable synthetic fibers. It can be decomposed into carbon dioxide and water by microorganisms in soil or seawater. When burned, it will not emit poisonous gas and cause pollution. It is a sustainable ecological fiber. [0003] The fabric made of polylactic acid fiber has good hand feeling and drapability, is UV resistant, has low flammability and excellent processing performance. However, the existing polylactic acid fibers have the problems of weak physical propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07D01F1/10
CPCD01F6/92D01F1/07D01F1/10
Inventor 翁荣金张体健柴红梅
Owner LANGSHA KNITTING
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