Development of Flexible Neutron-Shielding Resin as an Additional Shielding Material

Sukegawa, Atsuhiko M.; Anayama, Yoshimasa; Ohnishi, Seiki; Sakurai, S.; Kaminaga, A.; Okuno, Koichi

doi:10.1080/18811248.2011.9711737

Cited by 18 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, inside the self-shielded blocks, point D (0, −1.29), 329 ± 43 mGy/mo, and outside the block, point E (0, −1.79), was 1.30 ± 0.18 mGy/mo. The shielding effectiveness for photons from the self-shielded RDS-111 (70 cm of PE, B 4 C and concrete) was 253 [12]. Furthermore, the effectiveness of the Pb wall at point F in front of the maintenance table was 14.4.…”

Section: The Distributions Of Air Kerma In the Vault Roommentioning

confidence: 84%

See 1 more Smart Citation

Evaluating air kerma at a medical cyclotron after refined shielding design using the TLD approach

Tseng

Liu

Lin

et al. 2013

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

show abstract

Section: The Distributions Of Air Kerma In the Vault Roommentioning

confidence: 84%

“…This system is made of a mixture of polyethylene (PE), boron carbide (B 4 C) and concrete [11,12]. The vault room is accessed from the maze directly through two motor-driven sliding doors, d 1 and d 2 , which are made of 1-cm-thick Pb and 5-cm-thick PE.…”

Section: Medical Cyclotronmentioning

confidence: 99%

Evaluating air kerma at a medical cyclotron after refined shielding design using the TLD approach

Tseng

Liu

Lin

et al. 2013

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

show abstract

“…JAEA developed a series of epoxy resin and heat-resistant neutron composite materials with different contents of boron. The developed material performs well in both shielding and heat resistance and can be used in the external shield of vacuum containers and superconducting Tokomak device [10]. Seyhun Kipcak has studied epoxy-based composites with different contents of boron fiber.…”

Section: Introductionmentioning

confidence: 99%

Study on the Design, Preparation, and Performance Evaluation of Heat-Resistant Interlayer-Polyimide-Resin-Based Neutron-Shielding Materials

Liu

Sun

et al. 2022

Materials

View full text Add to dashboard Cite

Polymers have an excellent effect in terms of moderating fast neutrons with rich hydrogen and carbon, which plays an indispensable role in shielding devices. As the shielding of neutrons is typically accompanied by the generation of γ-rays, shielding materials are developed from monomers to multi-component composites, multi-layer structures, and even complex structures. In this paper, based on the typical multilayer structure, the integrated design of the shield component structure and the preparation and performance evaluation of the materials is carried out based on the design sample of the heat-resistant lightweight polymer-based interlayer. Through calculation, the component structure of the polymer-based materials and the three-layer thickness of the shield are obtained. The mass fraction of boron carbide accounts for 11% of the polymer-based material. Since the polymer-based material is the weak link of heat resistance of the multilayer shield, in terms of material selection and modification, the B4C/TiO2/polyimide molded plate was prepared by the hot-pressing method, and characterization analysis was conducted for its structure and properties. The results show that the ball milling method can mix the materials well and realize the uniform dispersion of B4C and TiO2 in the polyimide matrices. Boron carbide particles are evenly distributed in the material. Except for Ti, the other elemental content of the selected areas for mapping is in good agreement with the theoretical values of the elemental content of the system. The prepared B4C/TiO2/polyimide molded plate presents excellent thermal properties, and its glass transition temperature and initial thermal decomposition temperature are as high as 363.6 °C and 572.8 °C, respectively. In addition, the molded plate has good toughness performs well in compression resistance, shock resistance, and thermal aging resistance, which allows it to be used for a long time under 300 °C. Finally, the prepared materials are tested experimentally on an americium beryllium neutron source. The experimental results match the simulation results well.

show abstract

“…As the utilization of nuclear energy is diversified, the neutron shielding materials with heat resistance, flexibility, and low activation concrete have been developed [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Development of high-performance gel-type radiation shielding material using polymer resin

Odano

Konnai

Asami

2014

Progress in Nuclear Science and Technology

View full text Add to dashboard Cite

New gel-type shielding material, mainly consists of resin, lead powder and a boron compound, was developed. For simplification of the production process, new production method blending two types of liquid of base resin and a hardening accelerator was developed. To produce base resin, the crosslinking agent and the polymerization agent were blended with the thermosetting resin, first, and boric acid and lead were blended with the oligomerized component. Although the blended material is in gel condition immediately after blending, it has the feature hardened automatically without any processing. Radiation shielding performance of developed gel-type shielding material for neutron and gamma ray up to 25 cm in thickness were measured using standard sources of 252 Cf and 60 Co. It was found that new shielding material was able to reduce neutron dose rate half for that of ordinary concrete and shielding performance for gamma-ray was slightly good compared with that of ordinary concrete. Monte Carlo simulations were also carried out to confirm radiation shielding performance of newly developed gel-type shielding material for neutron and gamma ray up to 100 cm in thickness. From the experiments and simulations, it was shown that newly developed gel-type shielding material has excellent shielding performance compared with that of ordinary concrete, and can be used for compensated shield in the case of accident.

show abstract

Development of Flexible Neutron-Shielding Resin as an Additional Shielding Material

Cited by 18 publications

References 7 publications

Evaluating air kerma at a medical cyclotron after refined shielding design using the TLD approach

Evaluating air kerma at a medical cyclotron after refined shielding design using the TLD approach

Study on the Design, Preparation, and Performance Evaluation of Heat-Resistant Interlayer-Polyimide-Resin-Based Neutron-Shielding Materials

Development of high-performance gel-type radiation shielding material using polymer resin

Contact Info

Product

Resources

About