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Preparation method of solvent-based brittle self-peeling radioactive detergent

A solvent-based, self-peeling technology, applied in the field of nuclear pollution decontamination, can solve the problems of coating freezing, constant use, short-circuiting of instruments and equipment, etc., to reduce freezing point, avoid short-circuit failure, and improve peeling effect.

Active Publication Date: 2016-08-03
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of a solvent-based brittle self-stripping radioactive stain remover, which aims to solve the problem that the existing peelable decontamination paint will freeze when used in an environment below zero degrees Celsius Phenomenon, resulting in unchanged use, and at the same time, when decontaminating the surface of precision instruments and equipment, the water-based decontamination coating may cause problems such as short circuits and other faults in the equipment

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  • Preparation method of solvent-based brittle self-peeling radioactive detergent

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preparation example Construction

[0018] Such as figure 1 As shown, the preparation method of the solvent-based fragile and self-stripping radioactive detergent of the embodiment of the present invention includes the following steps:

[0019] The preparation method of the decontamination coating is, based on the mass of synthesized component 1 or component 2 as 100 parts:

[0020] S101: Component 1 preparation method: add absolute ethanol and KH550 (silane coupling agent) into the beaker, slowly add 7nmSiO under stirring 2 ,Incubate at 75~78℃ for 2h, then add the synthetic resin solution, slowly add ethyl cellulose after stirring uniformly, add surfactant after ethyl cellulose is completely dissolved, stop heating in water bath, and stir at room temperature for 4 hours , A light yellow opaque liquid is obtained; the amount of anhydrous ethanol: 57~58 parts; 7nmSiO 2 (Modified with 4% KH550) Dosage: 4 to 5 parts; Resin solution dosage: 34 to 35 parts; Ethyl cellulose dosage: 3.5 to 4.5 parts; Surfactant dosage: 0.5 ...

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Abstract

The invention discloses a preparation method of a solvent-based brittle self-peeling radioactive detergent. The preparation method comprises the following steps: adopting methacrylic acid as a soft monomer in a free radical polymerization product, methyl methacrylate as a hard monometer in the free radical polymerization product and acrylamide as a functional monomer in the free radical polymerization product; adding nanosilicon dioxide with different grain sizes and a functional additive in the preparation process of the detergent. The detergent obtained by the preparation method can be used in an environment of below 0 DEG C and cannot generate an icing phenomenon; meanwhile, when the decontamination is performed on the surfaces of a precision instrument and equipment, instrument and equipment short circuit and other faults possibly caused by the aqueous detergent are avoided; as the nanosilicon dioxide with different grain sizes is added in the preparation process of the detergent, a peeling effect between a coating brittle chip and the equipment is improved, so that the coating brittle chip is more easily subjected to brittle rupture and peeling from the surface of the equipment.

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 solvent-type brittle and self-stripping radioactive detergent. 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 alleviating surface radioactive contamination. The purpose of decontamination is to reduce the radioactivity of facilities and the environment, so as to realize the continued safe use of facilities or open sites. The essence of the decontamination process is to transfer radioactive contaminants from the surface of the decontamination object to the secondary waste. Most decontamination technologies are transplanted from other technical fields, and then improved and developed based on the characteristics of radioactive decontamination (such as radiation haz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/06C08F220/56C08F2/08C08K3/36G21F9/00G21F9/28
CPCC08F2/08C08F220/14C08K3/36G21F9/001G21F9/28C08F220/06C08F220/56
Inventor 李银涛周元林何智宇刘人龙张全平李迎军
Owner SOUTHWEAT UNIV OF SCI & TECH
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