High temperature resistant polyimide/boron carbide composites for neutron radiation shielding

Li, Xiaomin; Wu, Juying; Tang, Changyu; He, Zhoukun; Ping, Yuan; Sun, Yong; Lau, Woon‐Ming; Zhang, Kai; Murai, Jun; Huang, Yuhong

doi:10.1016/j.compositesb.2018.10.003

Cited by 100 publications

(34 citation statements)

References 45 publications

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“…Related results were also found using high-density polyethylene/wolfram and boron carbide [26], Zirconia nanoparticles/Polyvinylidene fluoride-tryfluorethylene copolymers [27], Boron carbide (B 4 C)/ polyimide [28], polymethyl methacrylate/bismuth trioxide particles [29], Red mud/ Brine sludge/epoxy resin [30], epoxy/boron carbide (B 4 C)/lead (Pb)/graphene oxide [31], Tungsten-based material [15,17] and Polyvinyl Pyrrolidone in Polyethylene and copper oxide nanoparticles [32]. These studies suggest that reinforced composites can reasonably replace lead as a robust shielding material.…”

Section: Criteria For Ionizing Radiation Shielding and Drawbacks Of Conventional Lead-based Shieldsmentioning

confidence: 66%

“…They reported plastic flow of the polymer matrix at 60°C and intra-laminar micro-cracking at a temperature above 90°C. Composite materials have shown a great potential for applications requiring high thermal stability and radiation shielding ability [28]. Wei et al [79] upheld that the shielding effectiveness of composite such as grapheme/polymer-derived silicoboroncarbonitrides increased with temperature.…”

Section: Temperaturementioning

confidence: 99%

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Trends in reinforced composite design for ionizing radiation shielding applications: a review

2021

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This review explored recent developments in reinforced composite design and applications for improved radiation shielding and high percentage attenuation. Radiation energy moves as a wave. Thus unguarded exposure to high-energy radiation is inimical to the human tissue and the overall health standing of individuals which may result in cancer, tumour, skin burns and cardiovascular diseases. Radiation energy is conventionally contained using lead-based shields. However, recent literature has faulted the continued use of lead citing drawbacks such as high toxicity, poisoning, lack of chemical stability, heaviness and hazardous after life handling. Consequently, the trending research evidence has shown mass deviation towards the use of reinforced polymer composite as an alternative to lead due to their light weight, low cost, high resilience, good mechanical tenacity and interesting electrical properties. The present review therefore summarizes the criteria for ionizing radiation shielding material design, mechanism of radiation energy shielding, beam penetration in composite shielding materials, theoretical shielding parameters in the design of radiation protective materials, scheme of reinforced composite material selection for shielding purposes and various control variables in the design of composite for ionizing radiation shielding. In addition, an attempt was made to highlight gaps in research and draw future scope for further studies. It is expected that this review will give some guidance to the future exploration in the design and application of reinforced composite with respect to ionizing radiation shielding processes.

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Section: Criteria For Ionizing Radiation Shielding and Drawbacks Of Conventional Lead-based Shieldsmentioning

confidence: 66%

Section: Temperaturementioning

confidence: 99%

Trends in reinforced composite design for ionizing radiation shielding applications: a review

2021

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“…Addition of boron powder and boron carbide whiskers into polyimide provides neutron shielding without any distortion of mechanical properties of composite manufactured 19 . The other study indicated that thermal stability of polyimide composites including micro B 4 C, fabricated by in‐situ polymerization, improved while mechanical properties partly decreased 14 . The changes of structure, chemistry and mechanical properties of some polyimides that exposed to fast neutrons and gamma irradiation were studied as well 20 .…”

Section: Introductionmentioning

confidence: 99%

“…Owing to their high melting point, robust chemical structure and strong intermolecular forces in between the chains, polyimides (PIs) are one of the high‐potent engineering plastics to be used as radiation shielding materials 14,15 . In other words, polyimides (PIs) are one of the good candidates as the “backbone” for radiation shielding materials due to their excellent properties.…”

Section: Introductionmentioning

confidence: 99%

Polyimide nanocomposites in ternary structure: “A novel simultaneous neutron and gamma‐ray shielding material”

Baykara

İrim

Wis

et al. 2020

Polymers for Advanced Techs

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The aim of this study is to develop a novel shielding material against both neutron and gamma rays. For this purpose, multi-functional polyimide nanocomposites with two different nanoparticles fillers, that is, h-BN and Gd 2 O 3 , was designed and fabricated through conventional melt extrusion processing techniques via laboratory batch twinscrew compounder. The morphology and structure of both fabricated nanoparticles and their nanocomposites were characterized by SEM, TEM, XRD. Moreover, the mechanical properties of nanocomposites were investigated. High energy neutron and gamma radiation shielding performance of nanocomposites having h-BN and Gd 2 O 3 were examined in detail by means of Neutron Howitzer. The results indicated that the presence of nanoparticles in polyimide significantly influenced both the radiation shielding and mechanical properties of nanocomposites. It was found that nanocomposites could be used for high energy neutron shielding purposes in nuclear reactor system, nuclear waste disposal applications, space, and aeronautics industries.

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“…As one promising and significant ceramic material [12], boron carbide stands out with its extraordinary properties [13,14], such as ultra-high hardness (Mohs hardness of 9.36 and microhardness of 55 GPa to 67 GPa) [15], less density (2.52 g/m 3 ), high melting point (2350 • C), high boiling point (3500 • C), high temperature strength, as well as good chemical stability without reacting with strong acids or alkali solutions. In addition, boron carbide has been widely applied in the national defense industry [16,17], nuclear industry, and other fields [18][19][20], on account of its high chemical degree, neutron absorption, wear resistance, and excellent semiconductor conductivity. In view of its outstanding properties, boron carbide is usually used to produce bullet-proof materials; nozzles for guns and cannons; and the essential components of nuclear reactors, such as the control rods, accident rods, safety rods, plates, or neutron absorbers [21].…”

Section: Introductionmentioning

confidence: 99%

Neutron Shielding Performance of 3D-Printed Boron Carbide PEEK Composites

Cao

et al. 2020

Materials

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Polyethylene is used as a traditional shielding material in the nuclear industry, but still suffers from low softening point, poor mechanical properties, and difficult machining. In this study, novel boron carbide polyether-ether-ketone (PEEK) composites with different mass ratios were prepared and tested as fast neutron absorbers. Next, shielding test pieces with low porosity were rapidly manufactured through the fused deposition modeling (FDM)-3D printing optimization process. The respective heat resistances, mechanical properties, and neutron shielding characteristics of as-obtained PEEK and boron carbide PEEK composites with different thicknesses were then evaluated. At load of 0.45 MPa, the heat deformation temperature of boron carbide PEEK increased with the boron carbide content. The heat deformation temperature of 30% wt. boron carbide PEEK was recorded as 308.4 °C. After heat treatment, both tensile strength and flexural strength of PEEK and PEEK composites rose by 40%–50% and 65%–78%, respectively. Moreover, the as-prepared composites showed excellent fast neutron shielding performances. For shielding test pieces with thicknesses between 40 mm and 100 mm, the neutron shielding rates exhibited exponential variation as a function of boron carbide content. The addition of 5%–15% boron carbide significantly changed the curvature of the shielding rate curve, suggesting an optimal amount of boron carbide. Meanwhile, the integrated shielding/structure may effectively shield neutron radiation, thereby ensuring optimal shielding performances. In sum, further optimization of the proposed process could achieve lightweight materials with less consumables and small volume.

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High temperature resistant polyimide/boron carbide composites for neutron radiation shielding

Cited by 100 publications

References 45 publications

Trends in reinforced composite design for ionizing radiation shielding applications: a review

Trends in reinforced composite design for ionizing radiation shielding applications: a review

Polyimide nanocomposites in ternary structure: “A novel simultaneous neutron and gamma‐ray shielding material”

Neutron Shielding Performance of 3D-Printed Boron Carbide PEEK Composites

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