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A protective material against neutron radiation for electronic components and its preparation method

A technology for electronic components and protective materials, which is applied in the field of neutron radiation-resistant protective materials for electronic components and its preparation, and can solve problems such as uneven dispersion, low radiation resistance of coatings, and heavy loads on spacecraft, etc. problems, to achieve the effect of weakening rays, improving the overall radiation resistance performance, and improving the binding ability

Active Publication Date: 2021-07-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of low radiation resistance of the coating caused by the heavy load of the existing radiation shielding material and the uneven dispersion of the functional filler of the traditional blend system coating. Provided is a protective material against neutron radiation for electronic components and a preparation method thereof

Method used

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Effect test

specific Embodiment approach 1

[0033] Specific Embodiment 1: A protective material against neutron radiation for electronic components in this embodiment is formed by alternately stacking resin cross-connection layers and functional metal layers, the outermost layer is a functional metal layer, and the resin cross-connection layers and functional metal layers are stacked alternately. The functional metal layers are alternately stacked for 10 cycles, the single-layer thickness of the resin cross-connection layer is 60 μm, and the single-layer thickness of the functional metal layer is 40 μm. The functional metal layer is a rare earth metal layer, and the rare earth metal is gadolinium.

[0034] The method for preparing the anti-neutron radiation protective material for above-mentioned electronic components is carried out according to the following steps:

[0035] 1. Preparation of resin cross-linked layer: Heat 100g of E51 type epoxy resin at 80°C to a molten state, then add 5.1g of aluminum acetylacetonate a...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment differs from Embodiment 1 in that: the resin cross-connection layer and the functional metal layer are alternately stacked for 20 cycles. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: This embodiment differs from Embodiment 1 in that: the resin cross-connection layer and the functional metal layer are alternately stacked for 30 cycles. Other steps and parameters are the same as those in the first embodiment.

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Abstract

A protective material against neutron radiation for electronic components and a preparation method thereof. The invention belongs to the field of radiation shielding materials and their preparation. The purpose of the invention is to solve the technical problems of the heavy load of the spacecraft due to the thicker radiation shielding material and the low radiation resistance performance caused by the uneven dispersion of the functional filler of the traditional blend system coating. The anti-neutron radiation protective material for electronic components of the present invention is formed by alternately stacking resin bridge layers and functional metal layers, and the outermost layer is the functional metal layer. Preparation method: 1. Preparing the resin cross-connection layer by thermal spraying and segmental curing; 2. Using magnetron sputtering technology, using rare earth metal elements as targets, coating a functional metal layer on the resin cross-connection layer in step 1; 3. , repeating alternately 10 to 30 times, so that the outermost layer of the protective material is a functional metal layer, and the radiation protective material is obtained. The protective material of the invention has a radiation shielding rate as high as 87.7% under neutron irradiation with a simulated dose of 100-200kGy.

Description

technical field [0001] The invention belongs to the field of radiation shielding materials and preparation thereof, in particular to a neutron radiation-resistant protective material for electronic components and a preparation method thereof. Background technique [0002] The space radiation environment is one of the important environmental elements faced by spacecraft in orbit, and it is also an important cause of abnormalities or failures of aerospace electronic components. Because neutron radiation is not charged, it has a very strong penetrating ability to matter, and it causes more damage to devices than other rays of the same measurement. In order to prevent the harm caused by the radiation, it is necessary to adopt a special anti-neutron radiation reinforcement treatment process to ensure the reliability of the spacecraft in orbit. Therefore, it is an important research topic to study the protective materials against neutron radiation radiation. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21F1/12
CPCG21F1/12G21F1/125
Inventor 吴晓宏崔凯卢松涛洪杨李杨秦伟
Owner HARBIN INST OF TECH
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