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Preparation technology of radiation protection material and radiation protection material

A technology of radiation protection and preparation technology, which is applied in the field of radiation protection materials, can solve problems such as shrinkage cavities and air bubbles, and achieve the effect of small density difference and low porosity

Inactive Publication Date: 2018-07-24
CHINA NUCLEAR POWER TECH RES INST CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of radiation protection material preparation process to overcome the problems such as air bubbles and shrinkage cavity that occur in the preparation radiation protection material process

Method used

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  • Preparation technology of radiation protection material and radiation protection material

Examples

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preparation example Construction

[0013] The invention provides a preparation process of a radiation protection material, comprising the following steps:

[0014] (1) Provide raw materials for preparing radiation protection materials;

[0015] (2) mixing and degassing the raw materials of the radiation protection material to obtain a mixture;

[0016] (3) Pouring the mixture;

[0017] It also includes curing treatment after pouring. The curing treatment makes the mixture gradually solidify from bottom to top by making the temperature of the upper part of the poured mixture lower than the temperature of the lower part of the mixture.

[0018] Preferably, in the curing treatment, the upper part of the poured mixed material is cooled down and / or the lower part of the mixed material is heated, so that the mixed material is gradually solidified from bottom to top.

[0019] Preferably, a cooling zone is set outside the top of the pouring chamber to cool the upper part of the poured mixture. The cooling zone can be...

Embodiment 1

[0031] (1) Provide raw materials for preparing radiation protection materials according to raw material 1 from the table of raw material components and weight content of radiation protection materials;

[0032] (2) Mixing and degassing the raw materials of radiation protection materials:

[0033] 1. Raw material mixing

[0034] 1.1 The first mixing treatment and degassing treatment

[0035] Put the epoxy resin matrix in the first premixing tank for heating and stirring, put the curing agent and imidazole accelerator in the second premixing tank for heating and stirring, the stirring temperature for heating and stirring is 60°C, the stirring rate is 20r / min, Stirring time 1h, stirring until the epoxy resin matrix, curing agent and imidazole accelerator reach 60°C;

[0036] Divide the flame retardant, neutron absorber and metal density increaser into two parts according to the weight ratio of epoxy resin matrix / curing agent and imidazole accelerator, and add them to the first ...

Embodiment 2

[0045] (1) Provide raw materials for preparing radiation protection materials according to raw material 2 from the table of raw material components and weight content of radiation protection materials;

[0046] (2) Mixing and degassing the raw materials of radiation protection materials:

[0047] 1. Raw material mixing

[0048] 1.1 The first mixing treatment and degassing treatment

[0049] Put the epoxy resin matrix in the first premixing tank for heating and stirring, put the curing agent and imidazole accelerator in the second premixing tank for heating and stirring, the stirring temperature for heating and stirring is 80°C, the stirring rate is 30r / min, Stirring time 2h, stirring until the epoxy resin matrix, curing agent and imidazole accelerator reach 80°C;

[0050] Divide the flame retardant, neutron absorber and metal density increaser into two parts according to the weight ratio of epoxy resin matrix / curing agent and imidazole accelerator, and add them to the first ...

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Abstract

The invention provides a preparation technology of a radiation protection material and the radiation protection material. The preparation technology comprises the following steps that (1) raw materials for preparing the radiation protection material are provided; (2) the raw materials of the radiation protection material are mixed and degassed to prepare a mixture; (3) the mixture is poured; and the preparation technology further comprises solidification treatment after pouring, wherein through the solidification treatment, the mixture is gradually solidified from bottom to top by making the temperature of the upper portion of the poured mixture lower than the temperature of the lower portion of the mixture. After adding the solidification treatment, the mixture is gradually solidified from the lower portion to the upper portion, and the non-solidified mixture at the upper portion can permeate downwards in time and naturally to fill in shrinkage gaps generated by the solidification atthe lower portion, and flowing of the non-solidified mixture can remove fine bubbles in the mixture, so that the prepared radiation protection material has low porosity and small density difference, and radiation generated by spent fuel can be well shielded.

Description

technical field [0001] The invention relates to a radiation protection material for shielding spent fuel produced in a nuclear power plant, in particular to a preparation process of the radiation protection material and the radiation protection material prepared by the process. Background technique [0002] With the rapid development of nuclear power generation, the spent fuel generated during the operation of nuclear power plants is increasing day by day. Usually, the spent fuel transport container is used to transport the spent fuel to the spent fuel disposal site for reprocessing. At this time, a customized spent fuel transport container is required to shield the radiation generated by the spent fuel. Existing radiation protection materials used in spent fuel transportation containers, especially high-temperature thermosetting radiation protection materials are mostly used in spent fuel transportation containers, and there are many problems in the preparation process of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C39/00B29C39/38C08L63/00C08K3/22C08K3/38C08K3/08
CPCB29C39/006B29C39/38C08K3/08C08K3/22C08K3/38C08K2003/0893C08K2003/2224C08L63/00
Inventor 侯硕沈海丰陈帅路广遥田陆赵月扬马庆俊李其朋王超周建明江浩彭祥阳
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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