Preparation method of cure-peelable high-viscosity radioactive aerosol inhibitor

A radioactive and aerosol technology, used in the field of nuclear pollution decontamination, can solve problems such as radioactive aerosol pollution, and achieve the effects of safety protection, high viscosity, and prevention of pollution from spreading

Active Publication Date: 2016-08-17
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of preparation method of the high-viscosity radioactive aerosol press preparation that can curable stripping, aim at solving the problem of rapid press removal of radioactive aerosol contamination that may be produced in nuclear activities (such as nuclear decommissioning and nuclear accident emergency)

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  • Preparation method of cure-peelable high-viscosity radioactive aerosol inhibitor
  • Preparation method of cure-peelable high-viscosity radioactive aerosol inhibitor
  • Preparation method of cure-peelable high-viscosity radioactive aerosol inhibitor

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[0020] Such as figure 1 As shown, the preparation method of the curable stripped high-viscosity radioactive aerosol press preparation of the embodiment of the present invention comprises the following steps:

[0021] S101: Preparation of matrix polyvinyl alcohol, 2 to 9 parts of polyvinyl alcohol, dissolved in 40 to 50 parts of deionized water, heated and stirred until dissolved, uniform and transparent without particles, kept at 90°C, and set aside;

[0022] S102: Preparation of monomer initiator mixed solution, monomer acrylamide (AM) 1-5 parts, initiator ammonium persulfate (APS) 0.01-0.05 parts, wherein the amount of initiator ammonium persulfate (APS) is the monomer 1 to 1.5 wt% (mass fraction) of the amount of acrylamide (AM), dissolved in 30 to 40 parts of solvent deionized water to obtain a monomer initiator mixed solution, stirred until fully dissolved, placed in a cool and dry place, and used;

[0023] S103: Synthesis of polymer polymerization solution, cool down th...

Embodiment 1

[0029] 1. Preparation of Polymer Solution

[0030] Put 600g of polyvinyl alcohol (PVA1799) and 2000ml of deionized water in a reactor, raise the temperature to 90°C, stir for 90min until the polyvinyl alcohol is completely dissolved, cool down to 80°C, and keep warm for later use.

[0031] 60 g of acrylamide (AM) monomer and 0.6 g of ammonium persulfate (APS) initiator were dissolved in 1200 ml of deionized water to form a monomer initiator mixed solution, ready for use.

[0032] Add the monomer initiator mixed solution dropwise at a rate of 2 drops / second, and the dropwise addition is completed in 80 minutes. After the monomer initiator mixed solution has been dripped, keep it warm for 200 minutes, cool down and discharge to obtain a polymer polymerization solution.

[0033] 2. Preparation of radioactive aerosol compression preparation

[0034] Measure 1L of the polymer solution, heat to 40°C, add 10g of gelatin, stir for 30 minutes (rotating speed 250-400rpm), cool down to ...

Embodiment 2

[0042] 1. Preparation of matrix polyvinyl alcohol

[0043] Dissolve 2-9 parts of polyvinyl alcohol (PVA1799) in 40-50 parts of deionized water, heat and stir until dissolved, and when it is uniform and transparent without particles, keep warm at 90°C and set aside.

[0044] 2. Preparation of monomer initiator mixed solution

[0045] 1-5 parts of monomer acrylamide (AM), 0.01-0.05 parts of initiator ammonium persulfate (APS), wherein the amount of initiator ammonium persulfate (APS) is 1-1.5wt of the amount of monomer acrylamide (AM) % (mass fraction), dissolved in 30 to 40 parts of solvent deionized water to obtain a monomer initiator mixed solution, stirred until fully dissolved, placed in a cool and dry place, and set aside.

[0046] 3. Synthesis of Polymer Solution

[0047] Cool down the polyvinyl alcohol solution prepared in step 1, the temperature range is 60-80°C, the stirring speed is 200-450rpm, and the monomer initiator mixed solution in step B is added dropwise wit...

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Abstract

The invention discloses a preparation method of cure-peelable high-viscosity radioactive aerosol inhibitor, comprising: using polyethylene alcohol as matrix, acrylamide as a modifying functional monomer and water as a solvent, preparing a polymer solution by using free radical polymerizing mechanism, and adding gelatin and a surfactant to modify the solution. The radioactive aerosol inhibitor of the invention is made by subjecting the matrix polyethylene alcohol and the monomer acrylamide to free radical solution polymerization grafting and copolymerization, the prepared inhibitor has cross-linked mesh structure and high viscosity, the inhibitor is sprayed and atomized to capture dust particles and then settles on the surface of an object, aerosol dust particles are wrapped in along with volatilization of a solvent and can cure into a peelable continuous film, and the film can be removed and recycled by mechanical means. The radioactive aerosol inhibitor is applicable to inhibiting and removing radioactive aerosols possibly produced in nuclear facility decommissioning or nuclear accidents, thereby preventing radioactive contamination spread and protecting safety of operators and environment.

Description

technical field [0001] The invention belongs to the technical field of nuclear pollution decontamination, and in particular relates to a preparation method of a high-viscosity radioactive aerosol press preparation that can be cured and stripped. Background technique [0002] Radioactive aerosols are produced in decommissioning of nuclear facilities and in nuclear accidents. Radioactive aerosols refer to aerosols containing radionuclides. Solid or liquid particles containing radionuclides are suspended in the air to form a dispersed system with a certain degree of radioactivity. Radioactive aerosols contain both radionuclides and aerosols. characteristic. Therefore, no matter whether the radioactive aerosol dust particles are suspended in the air or settled on the surface of objects, people in such an environment for a long time will cause harm to the human body, cause various diseases, and the scope of harm is wide and far-reaching. Therefore, the rapid control and removal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21F9/02C08F261/04C08F220/56
CPCC08F220/56C08F261/04G21F9/02
Inventor 李银涛周元林何智宇张慧艳张全平李迎军
Owner SOUTHWEAT UNIV OF SCI & TECH
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