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A neutron-shielding hyper-hybrid laminate composite material for spent fuel storage and its preparation method

A composite material and ultra-hybrid technology, applied in the direction of reactor fuel elements, chemical instruments and methods, lamination, etc., to achieve the effect of reducing density, improving detection efficiency, and reducing wall thickness

Active Publication Date: 2017-12-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although nuclear fission can use a small amount of nuclear fuel to generate a large amount of electricity, the spent fuel produced by the fission will produce neutrons, gamma rays, secondary gamma rays and other charged particles and high-energy rays, and its decay cycle is generally tens of thousands of years to One hundred thousand years, so it must be handled and stored reasonably

Method used

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  • A neutron-shielding hyper-hybrid laminate composite material for spent fuel storage and its preparation method
  • A neutron-shielding hyper-hybrid laminate composite material for spent fuel storage and its preparation method
  • A neutron-shielding hyper-hybrid laminate composite material for spent fuel storage and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of neutron-shielding ultra-hybrid laminate composite material, the content of each component is calculated in parts by weight:

[0061]

[0062]

[0063] The preparation steps of the neutron-shielding hyperhybrid laminate composite material are as follows: anodizing the AA6061 aluminum alloy sheet at room temperature, wherein H 3 PO 4 The solution concentration is 150g / L, temperature: 25°C, voltage: 10V, time: 20min; configure B with a concentration of 50% 4 C / PMR mixed solution, and put it into an oven to evaporate most of the solvent, then evenly spread it on the AA6061 aluminum alloy sheet and dry it fully, put it in the oven, control the temperature at 40°C, and apply it for 8 hours The thickness is controlled at about 0.2mm. After drying on one side, lay the prefabricated carbon fiber prepreg, use the same process to continue coating the other side, dry and lay the carbon fiber prepreg. Lay the prepared single-layer prepreg laminate according to the...

Embodiment 2

[0069] A kind of neutron-shielding ultra-hybrid laminate composite material, the content of each component is calculated in parts by weight:

[0070]

[0071] The specific preparation method and steps are the same as those in Example 1, except that the structure of laying composite laminates is a 4 / 3 structure, and it is necessary to pay attention to the alignment between the boards to ensure the quality of hot pressing.

[0072] The mechanical properties and neutron shielding performance of neutron shielding hyperhybrid laminate composites were tested, and the test results are as follows:

[0073] Density (g / cm 3 )

Tensile strength (MPa)

Bending strength (MPa)

Layer shear strength (MPa)

2.43

491

431

57

[0074] Shielding properties of neutron shielding hyperhybrid laminate composites:

[0075] actual thickness

Embodiment 3

[0077] A kind of neutron-shielding ultra-hybrid laminate composite material, the content of each component is calculated in parts by weight:

[0078]

[0079] The specific preparation method and steps are the same as those in Example 1, the difference is that the structure of laying composite laminates is a 5 / 4 structure, and it is necessary to pay attention to the alignment between the boards to ensure the quality of hot pressing.

[0080] The mechanical properties and neutron shielding performance of neutron shielding hyperhybrid laminate composites were tested, and the test results are as follows:

[0081] Density (g / cm 3 )

Tensile strength (MPa)

Bending strength (MPa)

Layer shear strength (MPa)

2.56

513

448

60

[0082] Shielding performance of neutron shielding composite materials:

[0083] actual thickness

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Abstract

The invention discloses a novel neutron shielding super-hybrid laminate composite material for spent fuel storage and a preparation method thereof. The neutron shielding super-hybrid laminate composite material comprises an AA6061 T6 state aluminum alloy plate, a carbide boron enhanced PMR type polyimide composite material and a carbon fiber enhanced polyimide composite material. The preparation process of the invention comprises the following flows: firstly adopting an anode oxidation process to perform surface roughening treatment on the AA6061 T6 state aluminum alloy plate, and spraying B4C / PMR composite materials in different proportions on the surface, and then laying according to a laying mode different form the laying mode of the carbon fiber enhanced polyimide composite material, and finally using a heat-die pressing preparation process to perform curing and molding so as to prepare the neutron shielding super-hybrid laminate composite material with different 10B face densities. Through the testing of the heat neutron shielding performance of the neutron shielding super-hybrid laminate composite material, the testing result shows that the material has excellent neutron shielding effect; and meanwhile, the super-hybrid laminate composite material has excellent normal temperature and high temperature mechanical property.

Description

Technical field: [0001] The invention relates to a neutron shielding super-hybrid laminate composite material for spent fuel storage and a preparation method thereof, which belongs to the technical field of preparation of neutron shielding composite materials for spent fuel storage. Background technique: [0002] my country proposed the use of new energy in the 2014 "Energy Development Plan", highlighting the country's emphasis on environmental governance, and the use of clean energy, especially nuclear energy, has received more and more attention and promotion. Although nuclear fission can use a small amount of nuclear fuel to generate a large amount of electricity, the spent fuel produced by the fission will produce neutrons, gamma rays, secondary gamma rays and other charged particles and high-energy rays, and its decay cycle is generally tens of thousands of years to One hundred thousand years, so it must be properly disposed and stored. There are currently three main w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/08B32B15/20B32B27/04B32B27/28B32B33/00B32B37/06B32B37/10G21C19/07
CPCB32B15/08B32B15/20B32B27/281B32B33/00B32B37/06B32B37/10B32B2250/40B32B2255/06B32B2255/26B32B2262/106B32B2307/212B32B2307/558B32B2307/72B32B2309/02B32B2309/12G21C19/07Y02E30/30
Inventor 陶杰符学龙李华冠胡玉冰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS