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Carbon nano tube compounded hydrogel for tritium prevention and filtration and preparation method thereof

A carbon nanotube composite and carbon nanotube technology, applied in the field of tritium protection, can solve the problems of low composite hydrogel strength and low purity of composite hydrogel, achieve good filtration effect, good water absorption effect, and maintain air permeability Effect

Inactive Publication Date: 2016-03-23
ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of the composite hydrogel prepared by chemical cross-linking method and physical cross-linking method is not high, while the strength of the composite hydrogel prepared by radiation cross-linking method is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Add 2mL of acrylic acid, 0.1g of carbon nanotubes, and 1mmol / L of anhydrous copper sulfate into 200mL of deionized water, disperse evenly, and sonicate for 20 minutes. dose irradiation. The obtained product was freeze-dried for 48 hours after being washed by centrifugation. Add 1g of acrylamide, 0.5mg / mL modified carbon nanotubes into 100mL of deionized water, disperse evenly, stir ultrasonically for 20 minutes, then pass nitrogen gas for 20 minutes to remove oxygen, and send it to cobalt source for 10kGy dose irradiation. The obtained carbon nanotube composite hydrogel product was freeze-dried for 48 hours.

Embodiment 2

[0027] Example 2: Add 5mL of acrylic acid, 0.5g of carbon nanotubes, and 2mmol / L anhydrous copper sulfate into 200mL of deionized water, disperse evenly, and sonicate for 20 minutes, then pass nitrogen gas for 20 minutes to remove oxygen, and send it into a cobalt source for 30kGy dose irradiation. The obtained product was freeze-dried for 48 hours after being washed by centrifugation. Add 5g of acrylamide, 2mg / mL modified carbon nanotubes into 100mL of deionized water, disperse evenly, stir ultrasonically for 20 minutes, then pass nitrogen gas for 20 minutes to deoxygenate, and send it to cobalt source for 30kGy dose irradiation. The obtained carbon nanotube composite hydrogel product was freeze-dried for 48 hours.

Embodiment 3

[0028] Example 3: Add 10mL of acrylic acid, 1g of carbon nanotubes, and 4mmol / L anhydrous copper sulfate into 200mL of deionized water, disperse evenly, and sonicate for 20 minutes, then pass nitrogen gas for 20 minutes to remove oxygen, and send the cobalt source for a dose of 100kGy irradiation. The obtained product was freeze-dried for 48 hours after being washed by centrifugation. Add 10g of acrylamide, 5mg / mL modified carbon nanotubes into 100mL of deionized water, disperse evenly, stir ultrasonically for 20 minutes, then pass nitrogen gas for 20 minutes to remove oxygen, and send it to cobalt source for 100kGy dose irradiation. The obtained carbon nanotube composite hydrogel product was freeze-dried for 48 hours.

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Abstract

The invention discloses carbon nano tube compounded hydrogel for tritium prevention and filtration and a preparation method thereof. The carbon nano tube compounded hydrogel can keep air permeability under the condition of water adsorption and meanwhile has a certain mechanical strength. The preparation method adopts a two-step irradiation method, acrylic acid is successfully grafted to the walls of carbon nano tubes through first-step irradiation, and the problem that the carbon tubes are insoluble in water is solved; gel and the carbon nano tubes are successfully and uniformly compounded together through second-step irradiation, the mechanical strength of the carbon nano tube compounded hydrogel is also accordingly improved, and the air moisture adsorption efficiency is also improved. The method is simple and easy to operate, the doping of other reagents is not needed, and the obtained hydrogel material is purer.

Description

technical field [0001] The invention relates to the field of tritium protection, in particular to a carbon nanotube composite hydrogel for tritium protection filtration and a preparation method thereof. Background technique [0002] Tritium is a low-toxic radionuclide, but it is the most active artificial nuclide released by nuclear facilities to the workplace and the environment. With the rapid development of the nuclear industry, the research on the internal exposure dose and health hazards of radiation workers and the public has been paid more and more attention in the world. The focus of personal tritium protection is mainly to control the two routes of breathing and skin. Two methods of filtering and supplying air are used to control respiratory intake. Air-supplied respiratory protective equipment includes self-contained respirators, ventilated hoods, and protective air suits; filtered respiratory protective equipment uses materials to absorb and filter tritium, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F220/56C08F292/00C08F220/06C08F2/46C08J3/075C08J3/28C08J3/24C08J9/28
CPCC08F220/06C08F220/56C08F285/00C08F292/00C08J3/075C08J3/24C08J3/28
Inventor 文万信刘汉洲叶天南闫思齐
Owner ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV
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