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방사선 조사선량이 중성자 차폐재의 역학적 성질에 미치는 영향
Effects of Radiation Dose on Mechanical Properties of Neutron Shielding Materials
HWAHAK KONGHAK, April 1996, 34(2), 237-242(6), NONE
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Abstract
사용후 핵연료 수송용기 등에 사용되는 중성자 차폐재를 실리콘고무를 기본물질로 하고 폴리프로필렌, 수산화알루미늄 그리고 탄화붕소 등을 첨가재로 하여 제조하였으며, 방사선 조사선량이 차폐재의 인장강도, 압축강도, 경도, 비중, 무게변화 및 수소함량변화 등 역학적 성질에 미치는 영향 등을 검토하였다. 방사선 조사선량의 증가에 딸 DC-70, DC-49(Dow Corning사의 Sylgard) 차폐재의 인장강도는 증가하였으나, HR-39(해룡 실리콘(주)) 차폐재의 인장강도는 감소하는 경향을 나타내었다. 또한 조사선량의 증가에 따라 DC-70, DC-49, HR-30 차폐재들의 압축강도, 경도 등이 증가하는 경향을 나타내었으며, 방사선조사선량에 따른 차폐재의 비중과 무게 그리고 수소함량은 크게 변하지 않는 것으로 나타났다.
Effects of radiation dose on the mechanical properties of silicone rubber based neutron shielding materials such as tensile strength, compressive strength hardness, specific gravity and changes of weight and hydrogen content have been investigated. As the radiation dose has been increased, the tensile strength of shielding materials of DC-70 and DC-49 have been increased, however, that of HR-39 has been decreased, respectively. The compressive strength and hardness of shielding materials of DC-70, DC-49 and HR-39 have been increased with an increase in the radiation does on them. The amount of radiation dose on the materials of DC-70, DC-49, and HR-39 has not resulted in a measurable loss of weight and hydrogen content of them.
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