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Reparation method of self-embrittled radioactive decontamination coating

A decontamination coating and radioactive technology, applied in the field of decontamination of nuclear pollution, can solve the problems of poor decontamination effect of complex structural parts

Inactive Publication Date: 2012-09-26
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of this method is that it has poor decontamination effect on porous rough objects and complex structural parts, and at the same time, it will cause a certain radiation dose to the operator during the peeling process.

Method used

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  • Reparation method of self-embrittled radioactive decontamination coating
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  • Reparation method of self-embrittled radioactive decontamination coating

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with specific embodiments.

[0015] 1. Polymer emulsion synthesis

[0016] 1.1 Preparation of monomer pre-emulsion

[0017] Add 5.5g sodium dodecylbenzene sulfonate (SDBS) and 21.5g fatty alcohol polyoxyethylene ether (AEO-7) in the beaker, then add 870g deionized water, stir to make sodium dodecylbenzenesulfonate and After the fatty alcohol polyoxyethylene ether is completely dissolved, add 1500g methyl methacrylate (MMA) and 500g methacrylic acid (MAA), and stir vigorously to form a stable monomer pre-emulsion.

[0018] 1.2 Preparation of initiator solution

[0019] 15.2g potassium persulfate (K 2 S 2 o 8 ) into the beaker, then add 1170g deionized water and stir to make it dissolve completely to form an initiator solution.

[0020] 1.3 Synthesis of polymer emulsion

[0021] Add 15.1kg of deionized water and 20.5g of sodium dodecylbenzenesulfonate (SDBS) into a 30L reactor, stir and heat up ...

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Abstract

The invention discloses a preparation method of a self-embrittled radioactive decontamination coating. The self-embrittled radioactive decontamination coating is prepared by performing copolymerization on a methacrylic acid monomer and a methyl methacrylate monomer through emulsion. Crosslinking agent is added into the prepared polymer emulsion so as to realize complexing and crosslinking of polymer molecular chain sections in the emulsion, and the emulsion can be self-embrittled and stripped off after being painted, molded and solidified, thus being separated from a contaminated object; and a certain amount of complexing agent is added into the polymer emulsion to perform a complexing adsorption action on radioactive nuclide particles, thus fulfilling the aim of clearing radioactive nuclide. The self-embrittled coating can be applied to radioactive decontamination in general occasions and on the surface of complicated structural parts; and brittle sheets produced by decontamination can be collected mechanically, so that the radiation amount to an operator can be reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear pollution decontamination, in particular to a preparation method of a self-brittle radioactive decontamination paint. Background technique [0002] In nuclear decommissioning and various nuclear emergency response, the removal of radionuclide contamination is a key issue. Decontamination refers to the process of removing or mitigating surface radioactive contamination. The purpose of decontamination is to reduce the radioactive activity of facilities and the environment, so as to realize the continued safe use of facilities or open the site. The essence of the decontamination process is to transfer radioactive pollutants from the surface of the decontamination object to secondary waste. Most of the decontamination technologies are transplanted from other technical fields, and then improved and developed according to the working characteristics of radioactive decontamination (such as radiation haz...

Claims

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Application Information

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IPC IPC(8): C09D133/12C09D133/02C09D5/20C08F220/14C08F220/06C08F2/26C08F2/30
Inventor 周元林李银涛谢长琼李迎军
Owner SOUTHWEAT UNIV OF SCI & TECH
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