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Preparation method, product and application of UV-resistant porous fiber with oriented pore structure

A technology of porous fibers and pore structures, which is applied in the field of preparation of ultraviolet-proof porous fibers, can solve the problems of limiting the application of porous fibers, unable to realize continuous large-scale preparation, etc., and achieves the effect of a simple preparation method.

Active Publication Date: 2021-02-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the traditional directional freezing method cannot achieve continuous large-scale preparation due to the limitation of its mold. For the occasions that require large-scale continuous preparation of porous fibers, this shortcoming severely limits the application of directional freezing method to prepare porous fibers.

Method used

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  • Preparation method, product and application of UV-resistant porous fiber with oriented pore structure
  • Preparation method, product and application of UV-resistant porous fiber with oriented pore structure
  • Preparation method, product and application of UV-resistant porous fiber with oriented pore structure

Examples

Experimental program
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Effect test

Embodiment 1

[0083] (1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.

[0084] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.

[0085] Mix 20ml of silk protein solution and 10ml of chitosan solution evenly, and centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1.

[0086] Mix the ultraviolet shielding agent titanium dioxide nanoparticles with the above mixed solution in a mass ratio of 100:1 between silk protein and titanium dioxide.

[0087] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperature reaction bath (-100°C), and pass the solution t...

Embodiment 2

[0094](1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.

[0095] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.

[0096] After mixing 20ml of silk protein solution and 10ml of chitosan solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein and chitosan is 9:1.

[0097] Mix the ultraviolet shielding agent zinc oxide nanoparticles with the above mixed solution at a mass ratio of 200:1 between silk protein and zinc oxide.

[0098] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low temperature reaction bath (-30, -60, -90°C respectively), and pass...

Embodiment 3

[0103] (1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.

[0104] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.

[0105] After mixing 20ml of silk protein solution and 10ml of chitosan solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1.

[0106] Mix the ultraviolet shielding agent organic nickel polymer with the above mixed solution at a mass ratio of 300:1 between silk protein and organic nickel polymer.

[0107] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperature reaction bath (the temperature is -100°C), p...

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Abstract

The invention relates to a preparation method, product and application of a UV-resistant porous fiber with an orientation hole structure. The preparation method includes: preparing a spinning solution, adding an ultraviolet shielding agent during preparation; spinning the spinning solution, and performing spinning during spinning. Directional freezing and collection of frozen fibers; frozen fibers remove ice crystals. The invention combines directional freezing and solution spinning to obtain a porous fiber with an oriented hole structure, and introduces an ultraviolet shielding agent into the preparation process, so that it has excellent heat insulation and ultraviolet protection properties at the same time.

Description

technical field [0001] The invention relates to the field of preparation of porous fibers, in particular to a preparation method, product and application of an ultraviolet-resistant porous fiber with an oriented pore structure. Background technique [0002] The wavelength of ultraviolet rays is between visible light and roentgen rays, and it is an electromagnetic wave with a wavelength between 180 and 400nm. Among them, the wavelength of 180 ~ 290nm is called ultraviolet C, which can be absorbed by the ozone layer. The wavelength of 290-320nm is called ultraviolet B, which can be partially absorbed by the ozone layer and partially reach the ground. Ultraviolet A with a wavelength of 320-400nm will penetrate deep into the skin and gradually destroy the elastic fibers of the muscles, causing the muscles to lose elasticity, the skin to sag, and wrinkles to appear. Appropriate amount of ultraviolet radiation can play a role in sterilization and promote the synthesis of vitamin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F4/00D01F2/00D01F9/00D01F6/52D01F6/94D01F1/10A41D31/04
CPCA41D31/00D01F1/106D01F2/00D01F4/00D01F6/52D01F6/94D01F9/00
Inventor 柏浩王玉洁
Owner ZHEJIANG UNIV
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