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Laminated neutron radiation shielding composite material and preparation method thereof

A technology of radiation shielding and composite materials, which is applied in the field of preparation of laminated neutron shielding radiation materials, and can solve problems such as unreachable

Inactive Publication Date: 2012-07-04
南京核安核能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the disadvantages of the existing technology that when using the same material, the maximum effect of each component cannot be achieved, the invention discloses a laminated neutron radiation shielding composite material and a preparation method thereof. Incorporation of different types of powders into epoxy resin improves shielding efficiency

Method used

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  • Laminated neutron radiation shielding composite material and preparation method thereof
  • Laminated neutron radiation shielding composite material and preparation method thereof
  • Laminated neutron radiation shielding composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 12 parts of imidazole curing agent methylimidazole and 3 parts of silane coupling agent KH-550 to 100 parts of bisphenol A-epoxy resin, stir well to make it uniform, and divide it into three parts; Part resin mass 5% of B 4 C powder and this part of resin quality 10% PbO powder, then fully stir to make it uniform. Lay polyethylene fiber cloth in the mold, use a brush to dip the prepared epoxy resin without any powder and brush it on the polyethylene fiber cloth to make it soak in the polyethylene fiber cloth, and then lay new polythene on it. Repeat the above steps for the vinyl fiber cloth to make it thick to 5 cm. As a neutron moderator, continue laying the boron fiber cloth on it, dip it with a brush and add B 4 Brush the epoxy resin of C powder onto the boron fiber cloth, make it soak into the boron fiber cloth, continue laying the new boron fiber cloth on it, repeat the above steps, make the thickness reach 2 cm, and continue laying the grafted lead acrylate. ...

Embodiment 2

[0049] Add 8 parts of imidazole curing agent ethyl imidazole and 3 parts of silane coupling agent KH-550 to 100 parts of bisphenol A-epoxy resin, stir well to make it uniform, and divide it into three parts; Part resin mass 15% B 4 C powder and PbO powder with 20% of the mass of the resin, and then fully stir to make it uniform. Lay polyethylene fiber cloth in the mold, use a brush to dip the prepared epoxy resin without any powder and brush it on the polyethylene fiber cloth to make it soak in the polyethylene fiber cloth, and then lay new polythene on it. Repeat the above steps for the vinyl fiber cloth to make it thick to 5 cm. As a neutron moderator, continue laying the boron fiber cloth on it, dip it with a brush and add B 4 Brush the epoxy resin of C powder onto the boron fiber cloth, make it soak into the boron fiber cloth, continue laying the new boron fiber cloth on it, repeat the above steps, make the thickness reach 2 cm, and continue laying the grafted lead acryla...

Embodiment 3

[0052] Add 15 parts of imidazole curing agent methylimidazole and 7 parts of silane coupling agent to 100 parts of bisphenol A-epoxy resin, stir well to make it even, and divide it into three parts; 20% B 4 C powder and PbO powder with 30% of the mass of the resin, and then fully stir to make it uniform. Lay polyethylene fiber cloth in the mold, use a brush to dip the prepared epoxy resin without any powder and brush it on the polyethylene fiber cloth to make it soak in the polyethylene fiber cloth, and then lay new polythene on it. Repeat the above steps for the vinyl fiber cloth to make it thick to 5 cm. As a neutron moderator, continue laying the boron fiber cloth on it, dip it with a brush and add B 4 Brush the epoxy resin of C powder onto the boron fiber cloth, make it soak into the boron fiber cloth, continue laying the new boron fiber cloth on it, repeat the above steps, make the thickness reach 2 cm, and continue laying the grafted lead acrylate. Polyethylene fiber c...

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Abstract

The invention discloses a laminated neutron radiation shielding composite material and a preparation method thereof; the laminated neutron radiation shielding composite material is in a three-layer composite structure, wherein a bottom layer is a polyethylene fiber reinforced epoxy resin matrix, a middle layer is a boron fiber reinforced epoxy resin matrix, and an upper layer is a polyethylene fiber reinforced epoxy resin matrix which is grafted with acrylic lead. The epoxy resin matrixes comprise materials basically in the following weight portions: 100 portions of bisphenol A epoxy resin, 8 portions to 15 portions of imidazole curing agent and 3 portions to 7 portions of silane coupling agent. In addition, boron carbide (B4C) which occupies 5 weight percent to 20 weight percent of the total weight of the epoxy resin is added into the epoxy resin matrix on the bottom layer; and lead oxide which occupies 10 weight percent to 30 weight percent of the total weight of the epoxy resin is added into the epoxy resin matrix on the upper layer. The laminated neutron radiation shielding composite material is specially manufactured to overcome the defects of a traditional neutron radiation shielding composite material that slowing and absorption functions are not separated so that the functions of an absorbing body cannot be displayed well.

Description

technical field [0001] The invention relates to the preparation of a laminated neutron shielding radiation material, which is mainly used in the field of neutron protection. Background technique [0002] With the advancement of science and technology and human exploration of energy and extraterrestrial space, nuclear technology has been applied in more and more fields. They can provide the required energy for a long time without producing greenhouse gases. This also makes nuclear technology play a pivotal role in today's science and technology. However, nuclear technology is a "double-edged sword". While benefiting mankind, it may also cause serious radiation damage. [0003] Compared with α-particles, β-particles, γ-photons and other rays that humans have mastered mature radiation shielding technology, the huge difference in the interaction cross-section between neutrons and matter at different energy levels, as well as the large number of secondary γ-rays produced after t...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/04B32B27/12B32B27/32B32B27/38B32B37/02B29C70/34C08L63/02
Inventor 汤晓斌陈飞达王鹏陈达
Owner 南京核安核能科技有限公司
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