Sm2O3/UHMWPE composites for radiation shielding applications: Mechanical and dielectric properties under gamma irradiation and thermal neutron shielding

Toyen, Donruedee; Wimolmala, Ekachai; Sombatsompop, Narongrit; Markpin, Teerasak; Saenboonruang, Kiadtisak

doi:10.1016/j.radphyschem.2019.108366

Cited by 45 publications

(45 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…e average density of the samples prior to irradiation was 3.27 g/cm 3 and 3.28 g/cm 3 after irradiation. Changes in density (upward) of most of these samples are within the volume determination error.…”

Section: Resultsmentioning

confidence: 99%

“…from ionizing radiation. Radiation-induced changes in mechanical properties is the result of a complex of various processes occurring in the structure of the material, including the formation of point defects and their accumulations (dislocation loops and pores); the formation of gaseous impurities (helium, hydrogen), stimulating gas swelling and embrittlement; decomposition of solid solutions; formation and dissolution of second phases; formation of radiation-stimulated diffusion and segregation of components; and radiation creep [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Its high hydrogen content (up to 3.6 wt. %) and density (up to 3.8 g/cm 3 ) make it possible to effectively use titanium hydride to simultaneously attenuate both neutron and c radiation [28][29][30][31][32]. Previous reports [33][34][35][36][37][38] have shown that modification of the surface of titanium hydride shot with borosilicate coatings or ion-plasma spraying of titanium metal significantly increases its thermal stability.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Radiation Resistance of a Structural Material Based on Modified Titanium Hydride

Yastrebinsky

Павленко

Karnauhov

et al. 2021

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

This work investigates the radiation resistance of a structural material based on modified titanium hydride and a Portland cement in a flux of neutron and γ-radiation. An assessment of the geometric and physicomechanical properties is given, along with the surface structure of irradiated cement composites, and the phase composition of the main hydrosilicates of the hydrated cement matrix during its γ-irradiation. It is shown that the use of a shot of titanium hydride increases the radiation resistance of radiation shielding based on a cement matrix, in comparison with the unmodified shot. A composite based on a modified shot of titanium hydride retains its basic properties after γ-irradiation, at an absorbed dose of up to 10 MGy. At an absorbed dose of 2 MGy in the Portland cement matrix of a composite based on a modified shot of titanium hydride, the formation of suolunite hydrosilicates occurs. It was established using X-ray fluorescence that, in the titanium hydride, a redistribution of the electron density occurs at an absorbed dose of γ radiation of 5 MGy, caused by structural phase changes due to the ongoing dehydrogenation processes.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Radiation Resistance of a Structural Material Based on Modified Titanium Hydride

Yastrebinsky

Павленко

Karnauhov

et al. 2021

Science and Technology of Nuclear Installations

View full text Add to dashboard Cite

show abstract

“…In other words, the generated debris due to wear particles and creep of the UHMWPE component results in joint loosening, osteolysis, and further required medical revision or even surgery [2,3]. Instead of total joint replacements, the UHMWPE is a widely used material for skis, neutron shielding, trabecular bone tissue replacement, and other industrial and consumer applications [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Self-Reinforced Composite Materials Based on Ultra-High Molecular Weight Polyethylene

et al. 2020

View full text Add to dashboard Cite

The properties of hybrid self-reinforced composite (SRC) materials based on ultra-high molecular weight polyethylene (UHMWPE) were studied. The hybrid materials consist of two parts: an isotropic UHMWPE layer and unidirectional SRC based on UHMWPE fibers. Hot compaction as an approach to obtaining composites allowed melting only the surface of each UHMWPE fiber. Thus, after cooling, the molten UHMWPE formed an SRC matrix and bound an isotropic UHMWPE layer and the SRC. The single-lap shear test, flexural test, and differential scanning calorimetry (DSC) analysis were carried out to determine the influence of hot compaction parameters on the properties of the SRC and the adhesion between the layers. The shear strength increased with increasing hot compaction temperature while the preserved fibers’ volume decreased, which was proved by the DSC analysis and a reduction in the flexural modulus of the SRC. The increase in hot compaction pressure resulted in a decrease in shear strength caused by lower remelting of the fibers’ surface. It was shown that the hot compaction approach allows combining UHMWPE products with different molecular, supramolecular, and structural features. Moreover, the adhesion and mechanical properties of the composites can be varied by the parameters of hot compaction.

show abstract

“…[ 1–4 ] In the field of radiation protection, UHMWPE fibers have become a promising material for the preparation of highly performant neutron shields, due to the high contents of hydrogen atoms withing their backbone. [ 5–8 ] However, the UHMWPE fibers have a low melting point, which negatively affect their use with most of the advanced thermosetting resins. More the high crystallinity and the absence of polar groups within the UHMWPE fibers are also two other major shortcomings of these fibers.…”

Section: Introductionmentioning

confidence: 99%

Toward an efficient stress transfer with a fully connected hybrid network from epoxy, oxidized UHMWPE fibers, and silane surface modified silicon carbide nanoparticles

et al. 2020

View full text Add to dashboard Cite

In this work, a new high‐performance hybrid material was designed targeting excellent static and dynamic mechanical properties. To achieve this goal, the hybrid constituents, namely the ultra‐high molecular weight polyethylene fibers and silicon carbide nanoparticles, were respectively, surface modified to graft the proper chemical species in order to maximize the interactions between the reinforcing phases and the epoxy matrix. The adopted grafting procedures were characterized by vibrational and morphological analyses. The generation a fully connected network resulted in consequent ameliorations in the mechanical and thermomechanical properties. Meanwhile, the effect of various amounts of the treated silicon carbide nanoparticles was also investigated. The finding indicated a gradual improvement in the overall mechanical properties up to 5 wt% for which the tensile strength reached its maximum value of about 477 MPa. The same hybrid materials displayed the remarkable storage modulus of 7.7 GPa at 25°C and a glass transition temperature of about 66°C. The synergistic stress transfer between the constituents was further evidenced by a proper investigation of the sample's fractured surfaces. Overall, the study revealed the great advantage of a fully connected network in developing lightweight and high‐performance materials for exigent applications.

show abstract

Sm2O3/UHMWPE composites for radiation shielding applications: Mechanical and dielectric properties under gamma irradiation and thermal neutron shielding

Cited by 45 publications

References 32 publications

Radiation Resistance of a Structural Material Based on Modified Titanium Hydride

Radiation Resistance of a Structural Material Based on Modified Titanium Hydride

Hybrid Self-Reinforced Composite Materials Based on Ultra-High Molecular Weight Polyethylene

Toward an efficient stress transfer with a fully connected hybrid network from epoxy, oxidized UHMWPE fibers, and silane surface modified silicon carbide nanoparticles

Contact Info

Product

Resources

About