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Preparation method, product and application of radiation-proof porous fiber with oriented pore structure

A technology for porous fibers and radiation protection, which is applied in the field of preparation of radiation protection porous fibers, can solve the problems of increased incidence of cancer and decreased number of white blood cells, and achieves the effects of excellent radiation protection performance and simple preparation method.

Active Publication Date: 2019-12-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, electromagnetic radiation can also inhibit the production of red blood cells, resulting in a decrease in the number of white blood cells and an increase in the incidence of cancer.

Method used

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  • Preparation method, product and application of radiation-proof porous fiber with oriented pore structure
  • Preparation method, product and application of radiation-proof porous fiber with oriented pore structure
  • Preparation method, product and application of radiation-proof porous fiber with oriented pore structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] (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. 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. 0.02 g of carbon nanotube powder was dissolved in 20 ml of 1% sodium dodecylbenzenesulfonate solution.

[0074] After mixing 20ml silk protein solution, 10ml chitosan solution and 20ml carbon nanotube solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1, and the mass ratio of silk protein to carbon nanotubes is 9:1. The mass ratio of the tube is 225:1.

[0075] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperat...

Embodiment 2

[0085] (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. 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. 0.04 g of carbon nanotube powder was dissolved in 20 ml of 1% sodium dodecylbenzenesulfonate solution.

[0086] After mixing 20ml silk protein solution, 10ml chitosan solution and 20ml carbon nanotube solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1, and the mass ratio of silk protein to carbon nanotubes is 9:1. The mass ratio of the tube is 225:2.

[0087] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperat...

Embodiment 3

[0092] (1) Cut 2.25g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 10ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.

[0093] Add 0.1 g of acetic acid to 10 ml of nano-silver solution with a concentration of 100 ppm (particle size 1-2 nm, Luoyang Oulun Environmental Protection Technology Co., Ltd.), and mix well.

[0094] Dissolve 0.5 g of chitosan powder in the above acetic acid solution, stir at 800 rpm / min for 30 min to mix evenly, and prepare a chitosan solution with a concentration of 50 mg / ml.

[0095] Mix 10ml of the above-mentioned 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 4.5:1.

[0096] (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 (-60°C), ...

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Abstract

The invention relates to a preparation method, product and application of a radiation-proof porous fiber with an oriented pore structure. The preparation method comprises the steps that a spinning solution is prepared, wherein a radiation-proof filler is added during the preparation; spinning is performed through the spinning solution, wherein directional freezing is performed during spinning, anda frozen fiber is collected; ice crystals of the frozen fiber are removed. According to the method, by combining directional freezing and solution spinning, the porous fiber with the oriented pore structure is obtained; the radiation-proof filler is introduced in the preparation process, so that the fiber has excellent thermal insulation and radiation-proof performance.

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 a radiation-proof porous fiber with an oriented hole structure. Background technique [0002] Porous materials have received extensive attention due to their good thermal insulation properties. The thermal insulation function of the fiber will be effectively improved by preparing the porous fiber. [0003] Oriented freezing is a method that uses the oriented growth of template solvents in temperature gradients to influence and control the movement and assembly of raw materials, thereby obtaining porous materials with oriented structures. In recent years, many types of porous materials with oriented structures have been successfully prepared by directional freezing. Deville et al. (S.Deville, E.Saiz, A.P.Tomsia, Biomaterials2006, 27, 5480.) successfully prepared the scaffold material of hydroxyapatite, and the existence...

Claims

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Application Information

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IPC IPC(8): D01F4/00D01F6/52D01F6/94D01F9/12D01F1/10A41D31/04
CPCA41D31/00D01F1/106D01F4/00D01F6/52D01F6/94D01F9/12
Inventor 柏浩李德文
Owner ZHEJIANG UNIV
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