Diffusion and Absorption Behaviors of Small Gas Molecules in EPDM and NBR Sealing Materials for C<sub>5</sub>F<sub>10</sub>O Insulated Switchgears

She, Congdong; Zeng, Fuping; Li, Haotian; Cai, Rijian; Yao, Qiang; Tang, Ju

doi:10.1109/tdei.2023.3319593

IEEE Trans. Dielect. Electr. Insul.

2024

DOI: 10.1109/tdei.2023.3319593

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Diffusion and Absorption Behaviors of Small Gas Molecules in EPDM and NBR Sealing Materials for C₅F₁₀O Insulated Switchgears

Congdong She,

Fuping Zeng,

Haotian Li

et al.

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2024

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Cited by 2 publications

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Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Yang,

Chen,

et al. 2024

J of Applied Polymer Sci

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Eucommia ulmoides gum (EUG)/ethylene propylene diene monomer (EPDM) blends were prepared using EUG with high and low molecular weight, respectively, and their physical properties and constituents compatibility were investigated. The blend exhibited superior physical properties and constituents compatibility when EUG with high molecular weight occupied 10 wt%. When its content increased further, the physical properties deteriorated gradually，the results of SEM, DSC, and DMA diagrams indicated poorer constituents compatibility. The blends prepared from EUG with low molecular weight can achieve better compatibility in a comprehensive range of blending ratio. When the EUG content was 20 wt%, the maximum tensile strength of the blend was observed, which was 49.9% higher than that of pure EPDM, its rebound resilience ascended by 5%, and the wear resistance remained nearly unchanged.

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Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Yang,

Chen,

et al. 2024

J of Applied Polymer Sci

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Physicochemical properties of CF₃OCF = CF₂ in high-voltage switchgear: part 1. Decomposition characteristics and thermodynamic parameters

Cui,

Lin,

Geng

et al. 2024

Phys. Scr.

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Recently, perfluoromethyl vinyl ether (CF3OCF=CF2) has been proposed to have the potential to replace SF6, but its arc-extinguishing ability is still unknown. To provide the necessary basic parameters for further study of arc extinguishing characteristics, this series of papers focuses on the physical and chemical properties of CF3OCF=CF2 arc plasma. The research content of this paper is decomposition characteristics and thermodynamic parameters. The geometric configuration, rotational inertia, and vibration frequency characteristics of CF3OCF=CF2 and its decomposition products were obtained at the B3LYP/6-311G(d,p) level. The energy of each particle was calculated at the CCSD(T)/cc-pVTZ level. The most likely decomposition path was CF3OCF=CF2→CF3+CF2CFO→CF2+CFO. The equilibrium compositions of arc plasma were calculated by the mass action law model. The main components of pure CF3OCF=CF2 after arc were C3F8, C3F6, C2F6, CF4, and CO. When CO2 was mixed in CF3OCF=CF2, with the increase of CO2 content, the main components after arc gradually became CF2O, CF4, CO2, and CO. The thermodynamic parameters such as density, specific enthalpy, and specific heat at constant pressure were obtained by thermodynamic relationship. Through ρCp and ρh, it can be inferred that the radial heat transfer capacity of CF3OCF=CF2 is not as good as SF6, but the energy dissipation capacity of axial heat convection is stronger than SF6, and the arc presents the characteristics of large radius and long length.

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Diffusion and Absorption Behaviors of Small Gas Molecules in EPDM and NBR Sealing Materials for C₅F₁₀O Insulated Switchgears

Cited by 2 publications

References 25 publications

Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Physicochemical properties of CF₃OCF = CF₂ in high-voltage switchgear: part 1. Decomposition characteristics and thermodynamic parameters

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Diffusion and Absorption Behaviors of Small Gas Molecules in EPDM and NBR Sealing Materials for C5F10O Insulated Switchgears

Cited by 2 publications

References 25 publications

Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Constituent compatibility and physical properties of bio‐based EUG/EPDM blends

Physicochemical properties of CF3OCF = CF2 in high-voltage switchgear: part 1. Decomposition characteristics and thermodynamic parameters

Contact Info

Product

Resources

About

Diffusion and Absorption Behaviors of Small Gas Molecules in EPDM and NBR Sealing Materials for C₅F₁₀O Insulated Switchgears

Physicochemical properties of CF₃OCF = CF₂ in high-voltage switchgear: part 1. Decomposition characteristics and thermodynamic parameters