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Epoxy resin based neutron-shielding composite material and preparation method thereof

A technology of epoxy resin and composite materials, which is applied in shielding, nuclear engineering, reactors, etc., can solve the problems of not being able to meet the application flexibility and construction diversity of shielding materials, needing to be improved, and difficult to balance physical and mechanical properties of shielding performance, etc. , to achieve excellent neutron shielding function, excellent anti-mildew performance and convenient construction

Inactive Publication Date: 2015-07-01
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-shielding composite material and preparation method thereof
  • Epoxy resin based neutron-shielding composite material and preparation method thereof
  • Epoxy resin based neutron-shielding composite material and preparation method thereof

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preparation example Construction

[0049] The preparation method of the above-mentioned epoxy resin-based neutron shielding composite material is as follows:

[0050] Step 1, taking raw materials by proportioning;

[0051] Step 2: Add additives into the epoxy resin matrix, stir at high speed, the stirring speed is generally above 500rpm, mix evenly, and obtain the first mixture; if the composition of the composite material contains an inert diluent or / and active diluent, the inert Add diluent or / and active diluent to epoxy resin together with additives;

[0052] Step 3, mixing the fast neutron moderator and the thermal neutron absorber uniformly in a mixer to obtain a mixed powder;

[0053] Step 4. When weighing the raw material does not contain accelerator and the curing agent is one, add the mixed powder into the first mixture under continuous stirring, mix evenly, then add the curing agent to the first mixture, and continue stirring , until the dispersion is uniform, and the epoxy resin-based neutron shiel...

Embodiment 1

[0060] combine Figure 1-6 Illustrative Example 1

[0061] Step 1, take the 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), 80g carbonized Boron (60μm particle size), 50gPE (200μm particle size), 20gPE (5μm particle size), 10g benzyl alcohol, 10g benzyl glycidyl ether, 5g phenol, 2.0gHX2080, 1.5gBYK-W980, 2gKH-550;

[0062] Step 2. Add benzyl alcohol, benzyl glycidyl ether, HX2080, BYK-W980 and KH-550 into bisphenol A diglycidyl ether type epoxy resin E-51, and stir evenly at a stirring speed above 500rpm. obtain the first mixture;

[0063] Step 3, mixing boron carbide and PE evenly to obtain mixed powder;

[0064] Step 4, uniformly mixing the modified isophorone diamine and phenol to obtain a second mixture;

[0065] Step 5. Under continuous stirring (rotating speed above 500rpm), divide the mixed powder into two times, and add 75g each time to th...

Embodiment 2

[0074] 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), 30g Boron carbide (particle size 10μm), 30g boron carbide (particle size 120μm), 80gPE (particle size 400μm), 10g ethanol, 10g cresol glycidyl ether, 5gDMP-30, 1.5gBYK-054, 2gBYK-9076, 5gKH-550 ;

[0075] Step 2. Add ethanol, cresyl 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 500rmp , to obtain the first mixture;

[0076] Step 3, mixing boron carbide and PE evenly to obtain mixed powder;

[0077] Step 4, uniformly mixing the modified N-aminoethylpiperazine and DMP-30 to obtain a second mixture;

[0078] Step 5. Under continuous stirring (above 500rpm), add the mixed powder to the first mixture at one time, stir evenly, then add the second mixture, continue stirring until uniformly...

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Abstract

The invention discloses an epoxy resin based neutron-shielding composite material and a preparation method thereof, belongs to the technical field of shielding materials and solves the technical problems that the shielding property and other physical and mechanical properties of a shielding material in the prior art are hard to satisfy simultaneously, the requirements for application flexibility and construction diversity cannot be met and the preparation process is complex. The composite material comprises the following components in parts by weight: 15-50 parts of epoxy resin, 7-30 parts of a curing agent, 5-40 parts of a fast neutron moderator, 5-55 parts of a thermal neutron absorbing agent, 0-10 parts of an inert diluent, 0-10 parts of an active diluent, 0-5 parts of an accelerant and 0.2-4.0 parts of an additive. The composite material has excellent neutron-shielding performance, has low toxicity, is odorless, is simple in preparation process and convenient in construction, and can be widely applied to various fields where radiation protection is strictly demanded.

Description

technical field [0001] The invention belongs to the technical field of shielding materials, and in particular relates to an epoxy resin-based neutron shielding composite material and a preparation method thereof. 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 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 polyolefins; materials that play a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08L63/04C08L23/06C08L23/12C08L91/06C08K3/00C08K3/04C08K3/22C08K3/38C08K3/08C08K3/30C08K3/24G21F1/10
Inventor 陈兆彬周金向杨小牛
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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