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Nano-tantalum-doped polyethylene composite material for space electronic radiation protection as well as preparation method and application for same

A technology of electron radiation and composite materials, which is applied in the field of composite materials for space charged particle radiation protection, can solve the problems of high density of aluminum protective layer, restricting the scope of use, and heavy weight of use, so as to improve the effect, increase energy loss, and solve the problem of heavy weight effect

Inactive Publication Date: 2013-04-24
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 problem that in the existing radiation protection materials, the density of the aluminum protection layer is high and the weight used is large. When polyethylene material is used as the radiation protection material, it is seriously restricted due to its poor thermal stability. In view of the problem of its scope of use, a polyethylene composite material doped with nanometer tantalum for space electron radiation protection is provided

Method used

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  • Nano-tantalum-doped polyethylene composite material for space electronic radiation protection as well as preparation method and application for same
  • Nano-tantalum-doped polyethylene composite material for space electronic radiation protection as well as preparation method and application for same
  • Nano-tantalum-doped polyethylene composite material for space electronic radiation protection as well as preparation method and application for same

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specific Embodiment approach 1

[0022] Specific Embodiment 1: A polyethylene composite material doped with nano-tantalum for space electron radiation protection in this embodiment is composed of 1-99 parts of polyethylene resin, 1-50 parts of nano-tantalum and 0.5~20 parts of coupling agent.

[0023] The doped nano-tantalum used for space electron radiation protection in this embodiment can improve the performance of the material in other aspects without affecting the original excellent performance of the material. Since polyethylene is used as the radiation protection material, its density is greatly reduced, which effectively solves the disadvantage of the heavy weight of the aluminum protective layer; due to the doping of nano-tantalum, the thermal stability of the polyethylene composite material prepared in this embodiment Compared with pure polyethylene, it is increased by 5%~35%, and the absorbed dose detected by the dose detector after electron irradiation is reduced by 0.1~0.7 times compared with pur...

specific Embodiment approach 2

[0025] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the coupling agent includes silane coupling agent, titanate coupling agent, aluminate coupling agent, metal composite coupling agent, One or more of the phosphate coupling agent and the borate coupling agent are mixed in any ratio. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the polyethylene resin is one or more of low-density polyethylene, high-density polyethylene, and ultra-high molecular weight polyethylene resin. Mix in any ratio. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a nano-tantalum-doped polyethylene composite material for space electronic radiation protection as well as a preparation method and an application for the same, relating to the field of composite materials for space charged particle radiation protection. The invention is to solve the problems of the high weight of an aluminium protecting layer due to the high density thereof, and serious restriction on the use range of a radiation protecting material made from polyethylene due to the bad heat stability of the radiation protecting material, in the existing radiation protecting materials. The nano-tantalum-doped polyethylene composite material is prepared from polyethylene resin, nano-tantalum and a coupling agent. The heat stability of the polyethylene composite material disclosed by the invention is increased by 5-35% relative to pure polyethylene, and the absorbed dose of the polyethylene composite material is reduced by 0.1-0.7 times relative to pure aluminium. The polyethylene composite material disclosed by the invention is suitable for the fields of radiation protection and aerospace.

Description

technical field [0001] The invention relates to the field of composite materials for space charged particle radiation protection. Background technique [0002] Spacecraft has been subjected to various space environments during its orbital operation, among which space radiation damage is the most prominent problem. After years of development, the traditional radiation protection materials are mainly aluminum. In order to achieve the anti-radiation effect, the thickness of the aluminum protective layer must be increased, thereby increasing the weight of the spacecraft. The issue of lightweight spacecraft has always been a hot issue for designers. Studies have shown that light elements are more effective than heavy elements in resisting radiation damage, which means that the efficiency of radiation protection increases with decreasing atomic number. [0003] Polyethylene molecules contain one carbon atom and two hydrogen atoms, and the hydrogen content is very high, so it has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K9/06C08K9/04C08K3/08G21F1/10
Inventor 李兴冀杨剑群何世禹高锋
Owner HARBIN INST OF TECH
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