Nano-W Dispersed Gamma Radiation Shielding Materials

被引：108

作者：

Kim, Jaewoo ^{[1
,2
,3
,7
]}

Seo, Duckbong ^{[2
,6
]}

Lee, Byung Chul ^{[4
]}

Seo, Young Soo ^{[5
]}

Miller, William H. ^{[1
,7
]}

机构：

[1] Univ Missouri Columbia, Missouri Univ Res Reactor, Columbia, MO 65211 USA

[2] Korea Atom Energy Res Inst, Nucl Mat Res Div, Daejeon Si 305353, South Korea

[3] Korea Atom Energy Res Inst, WCI Quantum Beam based Radiat Res Ctr, Daejeon Si 305353, South Korea

[4] Korea Atom Energy Res Inst, Nucl Reactor Core Design Div, Daejeon Si 305353, South Korea

[5] Sejong Univ, Dept Nano Sci & Technol, Gwangjin Gu 143747, South Korea

[6] EnesG, Nucl Technol Div, Daejeon Si 305510, South Korea

[7] Univ Missouri, Missouri Univ Res Reactor, Columbia, MO 65211 USA

来源：

ADVANCED ENGINEERING MATERIALS | 2014年 / 16卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

TUNGSTEN NANOPARTICLES; FLUORINE; FRACTURE; SIZE; LEAD;

D O I：

10.1002/adem.201400127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a nano-W dispersed polymer composite whose gamma attenuation is greatly enhanced. In situ pulverization and simultaneous encapsulation of polyethylene (PE) onto the nano-W particles was successfully performed by ball milling. Adhesive encapsulation of PE was observed by means of interstitial diffusion of atomic W at the boundary using transmission electron microscope. Prepared nano-W/PE particles were dispersed into ethylene-propylene-based polymer mixture using melt mixing. Attenuation of gammas for the nano-W composites was enhanced up to approximate to 75% for Ba-133 (approximate to 0.3MeV) compared to the micro-W composites, while it decreases as the photon energy increases. MCNP simulation also shows similar gamma attenuation behaviors.

引用

页码：1083 / 1089

页数：7

共 34 条

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