Analysis of boron epoxy resin composite in morphology, neutron radiography, and thermal neutron shielding performance

Yunus, Nur  Alia Md; Sazali, Muhammad Arif; Yazid, Khairiah; Salleh, Wan Norharyati Wan; Abdullah, Mohd Zaid; Idris, Faridah Mohamad; Ali, Nur Syazwani Mohd; Sarkawi, Muhammad Syahir; Jamaluddin, Khairulnadzmi

doi:10.1016/j.radphyschem.2022.110670

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…The materials contained in PCBs, especially epoxy resin due to its high content of hydrogen and large proportion in PCBs [11] , are responsible for these phenomena. Neutrons passing through PCBs may lost energy because of elastic or nonelastic scattering, thereby inhibiting the ability to induce unbalanced charge in the devices.…”

Section: Resultsmentioning

confidence: 99%

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Investigating the possibility of multiple board parallel test of atmospheric-neutron induced soft errors

Yu,

Zhang,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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Accelerated tests for Single Event Effect (SEE) that irradiate the target with far higher fluence beam are typically applied to investigate the device sensitivity to atmospheric neutron. Considering the neutrality and strong penetrability of neutron, devices are frequently placed in parallel to save time. For nanoscale devices, however, the results may be significantly influenced. The possibility of applying multiple-board parallel testing in accelerated experiments of atmospheric-neutron-induced soft errors was investigated using a 22-nm Static Random-Access Memory (SRAM) Field Programmable Gate Array (FPGA). To simplify the analysis, several empty Printed Circuit Boards (PCBs) were employed as the upstream boards. Both Block Random-Access Memory (BRAM) and Configuration Random-Access Memory (CRAM) were tested under the neutron beam provided by Atmospheric Neutron Irradiation Spectrometer (ANIS), showing similar results. For high-energy neutrons, device sensitivity decreases as the number of upstream PCBs increases, although the influence seems weak. The drop in cross sections from no-PCB to 20-PCBs is less than 30% for both modules. For thermal neutron testing, however, its sensitivity was greatly suppressed by PCBs. Epoxy resin contained in PCBs is considered to be the key factors for these phenomena due to its high content of hydrogen. Also, neutron can be scattered by copper to lose energy or even be absorbed by it. As a result, the actual fluence of the neutron reaching the device was reduced. Therefore, parallel testing may not be suitable if thermal neutrons need to be considered, but it is practicable for high-energy neutron testing with proper correction algorithms applied. SRAM FPGA, SOFT ERROR, ATMOSPHERIC-NEUTRON, PARALLEL TEST

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Section: Resultsmentioning

confidence: 99%

“…Ref. [11] discovered that the transmission ratio of thermal neutrons is severely reduced by the shielding of thick epoxy resin. By simulation, Ref.…”

Section: Resultsmentioning

confidence: 99%

Investigating the possibility of multiple board parallel test of atmospheric-neutron induced soft errors

Yu,

Zhang,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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“…18,19 Another versatile approach for formulating neutron radiation shields is to use a polymer matrix infused with boron-containing compounds, given that polymers are relatively easy to process. 20 A siloxanebased matrix is an ideal candidate since polydimethylsiloxane exhibits low glass transition temperature (T g ), high thermal and oxidative stability, high gas permeability, and non-toxicity. Although boron nitride and boron carbide tend to be the prevalent fillers mixed into a polymer matrix, 21,22 elemental boron was selected in the present work because it provides a greater neutron shielding capacity per gram of material compared to other boron compounds.…”

Section: Introductionmentioning

confidence: 99%

“…This attractive property has led to the development of neutron shields comprising a variety of boron composites as evidenced by published literature on iron‐boron‐alloys, 11 boron‐nitrides, 12,13 boron carbide, 14–16 boron‐infused steel, 17 and boron‐infused concrete 18,19 . Another versatile approach for formulating neutron radiation shields is to use a polymer matrix infused with boron‐containing compounds, given that polymers are relatively easy to process 20 . A siloxane‐based matrix is an ideal candidate since polydimethylsiloxane exhibits low glass transition temperature ( T g ), high thermal and oxidative stability, high gas permeability, and non‐toxicity.…”

Section: Introductionmentioning

confidence: 99%

Boron‐polymer composites engineered for compression molding, foaming, and additive manufacturing

Stockdale,

Legett,

Torres

et al. 2024

J of Applied Polymer Sci

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Boron (specifically 10B) is the element of choice to shield thermal neutrons due to its large (n, α) cross‐section; however, very few polymer composites containing high boron concentrations are available. This study aimed to determine the maximum possible amount of boron that could be introduced into a polymer matrix. Diverse manufacturing techniques, ranging from additive manufacturing to compression molding, were employed to fabricate inks and filaments for 3D printing, foams, and flexible pads. Composites using siloxanes, poly(lactic acid), and acrylonitrile butadiene styrene containing up to 80 wt% boron were sucessufully fabricated. The addition of known plasticizers (polyethylene glycol) and reinforcing agents (carbon nanofibers and fumed silica) helped to overcome fabrication problems such as clogging of the printing nozzle or crumbling of compression molded parts. In addition, the thermal‐mechanical properties of these novel boron composites were determined and shown to vary according to boron concentration, presence of additives, and fabrication techniques utilized.

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Radiation attenuation effectiveness of polymer-based radiation shielding materials for gamma radiation

Abualroos

Yaacob

Zainon

2023

Radiation Physics and Chemistry

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Analysis of boron epoxy resin composite in morphology, neutron radiography, and thermal neutron shielding performance

Cited by 6 publications

References 10 publications

Investigating the possibility of multiple board parallel test of atmospheric-neutron induced soft errors

Investigating the possibility of multiple board parallel test of atmospheric-neutron induced soft errors

Boron‐polymer composites engineered for compression molding, foaming, and additive manufacturing

Radiation attenuation effectiveness of polymer-based radiation shielding materials for gamma radiation

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