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Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof

A technology of epoxy resin and composite materials, which is applied in the field of shielding materials, can solve the problems of difficulty in balancing the physical and mechanical properties of shielding performance, the inability to meet the requirements of shielding material application flexibility and construction diversity, and needs to be improved to achieve excellent shielding function , Excellent anti-mildew performance, simple preparation method

Active Publication Date: 2015-06-17
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, cement-based shielding materials are mostly used for radiation shielding of large protective devices. However, this type of material has high requirements on the molding process and construction conditions, and it is difficult to balance the shielding performance of the material with other physical and mechanical properties.
The finished products of polyethylene-based shielding materials are mostly large-sized plates or products, which cannot meet the requirements for application flexibility and construction diversity of shielding materials in some special applications.
In addition, the existing shielding materials still need to be improved in terms of corrosion resistance, crack resistance and mildew resistance.

Method used

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  • Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof
  • Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof
  • Epoxy resin based neutron and gamma ray shielding composite material, as well as preparation method and application thereof

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preparation example Construction

[0064] The preparation method of the above-mentioned composite shielding material is: first mix the components evenly according to the composition, and then solidify and form (the temperature can be 25±2°C, the relative humidity can be 60±5%, and the time can be 24h), and the composite shielding material can be obtained. shielding material.

[0065] The epoxy resin mentioned in the present invention, fast neutron moderator, thermal neutron absorber, gamma ray shielding agent, inert diluent, active diluent, accelerator, auxiliary agent, lead sand and lead boron polymer Ethylene can also be obtained by means known to those skilled in the art, such as commercially available.

Embodiment 1

[0068] combine Figure 3-6 Illustrative Example 1

[0069] Step 1. Take raw materials according to the following ratio: 100g bisphenol A diglycidyl ether type epoxy resin E-51 (epoxy value 0.51), 60g modified isophorone diamine (amine value 260), 60g carbonized Boron (60μm particle size), 30g PE (200μm particle size), 900g lead powder (50-70μm), 10g benzyl alcohol, 10g cresol glycidyl ether, 5g phenol, 4.5g BYK-054, 7.0g BYK-9076, 10g KH-550;

[0070]Step 2. Add benzyl alcohol, cresol glycidyl ether, BYK-054, BYK-9076 and KH-550 into bisphenol A diglycidyl ether type epoxy resin E-51, and stir at a stirring speed above 500rpm Uniformly, the first mixture is obtained;

[0071] Step 3, mixing boron carbide, PE and lead powder evenly to obtain mixed powder;

[0072] Step 4, uniformly mixing the modified isophorone diamine and phenol to obtain a second mixture;

[0073] Step 5. Under continuous stirring (above 500rpm), divide the mixed powder three times, add 500g for the fir...

Embodiment 2

[0081] Step 1, take raw materials according to the following ratio: 100g bisphenol A diglycidyl ether type epoxy resin E-51 (epoxy value 0.51), 60g modified N-aminoethylpiperazine (amine value 270), 20g Boron carbide (particle size 10μm), 30g boron carbide (particle size 120μm), 30g PP (particle size 200μm), 1100g lead powder (50-70μm), 10g ethanol, 10g phenyl glycidyl ether, 5g salicylic acid, 5g BYK-054, 10g BYK-9076, 10g KH-550;

[0082] Step 2. Add ethanol, phenyl glycidyl ether, BYK-054, BYK-9076 and KH-550 into bisphenol A diglycidyl ether type epoxy resin E-51, and stir evenly at a stirring speed above 500rpm , to obtain the first mixture;

[0083] Step 3, mixing boron carbide, PP and lead powder evenly to obtain mixed powder;

[0084] Step 4, uniformly mixing the modified N-aminoethylpiperazine and salicylic acid to obtain a second mixture;

[0085] Step 5. Under continuous stirring (above 500rpm), divide the mixed powder three times, add 500g for the first time, 40...

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Abstract

The invention relates to an epoxy resin based neutron and gamma ray shielding composite material, as well as a preparation method and an application thereof, belonging to the technical field of shielding materials, used for solving the following technical problems that the shielding property of a shielding material in the prior art is difficultly combined with other physical and mechanical properties; requirements of application flexibility and construction diversity cannot be satisfied; and furthermore, the preparation process is complex. The epoxy resin based neutron and gamma ray shielding composite material is composed of the following components in parts by weight: 5-15 parts of epoxy resin, 2-9 parts of a curing agent, 1-10 parts of a fast neutron moderator, 2-20 parts of a thermal neutron absorber, 65-85 parts of a gamma ray shielding agent, 0-3 parts of an inert diluent, 0-3 parts of an active diluent, 0-2 parts of an accelerant, and 0.5-5 parts of auxiliaries. The epoxy resin based neutron and gamma ray shielding composite material has excellent neutron and gamma ray mixing-field shielding property; furthermore, the epoxy resin based neutron and gamma ray shielding composite material is low in toxicity, free from smell, simple in preparation process and convenient to construct; and thus, the epoxy resin based neutron and gamma ray shielding composite material can be widely applied in various fields of strict radiation-resistant requirements.

Description

technical field [0001] The invention belongs to the technical field of shielding materials, and in particular relates to an epoxy resin-based neutron and gamma ray shielding composite material and its preparation method and application. Background technique [0002] With the rapid development of national defense scientific research, radiation medicine and atomic energy industry, more and more fields have gradually adopted nuclear energy to replace traditional energy as a new energy supply method. While nuclear energy brings many conveniences to human beings, people pay more and more attention to the radiation damage associated with its use. For example, neutron and gamma radiation with strong penetrating power will pose a great threat to human life safety, environment and equipment. Therefore, shielding such radiation is a necessary means to make nuclear energy better serve human beings. [0003] Shielding materials in the prior art, matrix materials are mainly cement and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08L63/04C08L23/06C08L23/12C08K3/00C08K3/04C08K3/22C08K3/38C08K3/08C08K3/30C08K3/24G21F1/10
Inventor 陈兆彬周金向杨小牛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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