Influence of carbon black on crack damage of sealing rubber material exposed to high-pressure hydrogen gas

Junichiro Yaiviabe, Shin Nishimura

Research output: Contribution to journalArticle

Abstract

Two carbon black-filled ethylene-piopylene-diene-methylene linkage (EPDM) mbbeis which have a different particle size were exposed to hydrogen gas; then, the critical pressures at the initiation of internal cracks (PF) were evaluated. It was obtained thatpF=4-5 MPa for two CB-filled rubbem by optical microscope observation. ThePF values were estimated in tenm of fracture mechanics under the assumption that bubbles were formed in the rubber structure afier decompression, and these giew with the elapsed time; consequently, cracks initiated from the stiess concentration of the bubbles. When an internal pressure of the bubble (11) was assumed to be equal to the applied hydrogen pressure (P), the PF values were successifilly estimated in terms of the critical internal pressure (11 F), since "F showed good coincience wfthpF for unfilled and silica-filled rubbeis. In contrast, pF of the CB-filled rubbem was overestimated by this method, bause '1F was lager thanpF. Since the CB-filled rubbeis contain cathon black as filler, much hydrogen is absoibed in the rubbeis compared wfth the unfilled and silica-filled rubbeis. Because the increase of originated from the absorbed hydiogen by CB was underestimated, ft was inferred that PF showed smaller than '11 F Therefore, ft was supposed that 11>p for the CB-filled rubbeis, i.e., the CB-filled rubbem experienced more piessurization due to addftional hydiogen.

Original languageEnglish
Pages (from-to)323-334
Number of pages12
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume77
Issue number774
Publication statusPublished - Dec 1 2011

Fingerprint

Soot
Rubber
Carbon black
Hydrogen
Gases
Cracks
Silicon Dioxide
Silica
Beer
Fracture mechanics
Fillers
Ethylene
Microscopes
Particle size

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{000bc500c02b4a5dae444818af568895,
title = "Influence of carbon black on crack damage of sealing rubber material exposed to high-pressure hydrogen gas",
abstract = "Two carbon black-filled ethylene-piopylene-diene-methylene linkage (EPDM) mbbeis which have a different particle size were exposed to hydrogen gas; then, the critical pressures at the initiation of internal cracks (PF) were evaluated. It was obtained thatpF=4-5 MPa for two CB-filled rubbem by optical microscope observation. ThePF values were estimated in tenm of fracture mechanics under the assumption that bubbles were formed in the rubber structure afier decompression, and these giew with the elapsed time; consequently, cracks initiated from the stiess concentration of the bubbles. When an internal pressure of the bubble (11) was assumed to be equal to the applied hydrogen pressure (P), the PF values were successifilly estimated in terms of the critical internal pressure (11 F), since {"}F showed good coincience wfthpF for unfilled and silica-filled rubbeis. In contrast, pF of the CB-filled rubbem was overestimated by this method, bause '1F was lager thanpF. Since the CB-filled rubbeis contain cathon black as filler, much hydrogen is absoibed in the rubbeis compared wfth the unfilled and silica-filled rubbeis. Because the increase of originated from the absorbed hydiogen by CB was underestimated, ft was inferred that PF showed smaller than '11 F Therefore, ft was supposed that 11>p for the CB-filled rubbeis, i.e., the CB-filled rubbem experienced more piessurization due to addftional hydiogen.",
author = "Junichiro Yaiviabe and Shin Nishimura",
year = "2011",
month = "12",
day = "1",
language = "English",
volume = "77",
pages = "323--334",
journal = "Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A",
issn = "0387-5008",
publisher = "一般社団法人日本機械学会",
number = "774",

}

TY - JOUR

T1 - Influence of carbon black on crack damage of sealing rubber material exposed to high-pressure hydrogen gas

AU - Yaiviabe, Junichiro

AU - Nishimura, Shin

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Two carbon black-filled ethylene-piopylene-diene-methylene linkage (EPDM) mbbeis which have a different particle size were exposed to hydrogen gas; then, the critical pressures at the initiation of internal cracks (PF) were evaluated. It was obtained thatpF=4-5 MPa for two CB-filled rubbem by optical microscope observation. ThePF values were estimated in tenm of fracture mechanics under the assumption that bubbles were formed in the rubber structure afier decompression, and these giew with the elapsed time; consequently, cracks initiated from the stiess concentration of the bubbles. When an internal pressure of the bubble (11) was assumed to be equal to the applied hydrogen pressure (P), the PF values were successifilly estimated in terms of the critical internal pressure (11 F), since "F showed good coincience wfthpF for unfilled and silica-filled rubbeis. In contrast, pF of the CB-filled rubbem was overestimated by this method, bause '1F was lager thanpF. Since the CB-filled rubbeis contain cathon black as filler, much hydrogen is absoibed in the rubbeis compared wfth the unfilled and silica-filled rubbeis. Because the increase of originated from the absorbed hydiogen by CB was underestimated, ft was inferred that PF showed smaller than '11 F Therefore, ft was supposed that 11>p for the CB-filled rubbeis, i.e., the CB-filled rubbem experienced more piessurization due to addftional hydiogen.

AB - Two carbon black-filled ethylene-piopylene-diene-methylene linkage (EPDM) mbbeis which have a different particle size were exposed to hydrogen gas; then, the critical pressures at the initiation of internal cracks (PF) were evaluated. It was obtained thatpF=4-5 MPa for two CB-filled rubbem by optical microscope observation. ThePF values were estimated in tenm of fracture mechanics under the assumption that bubbles were formed in the rubber structure afier decompression, and these giew with the elapsed time; consequently, cracks initiated from the stiess concentration of the bubbles. When an internal pressure of the bubble (11) was assumed to be equal to the applied hydrogen pressure (P), the PF values were successifilly estimated in terms of the critical internal pressure (11 F), since "F showed good coincience wfthpF for unfilled and silica-filled rubbeis. In contrast, pF of the CB-filled rubbem was overestimated by this method, bause '1F was lager thanpF. Since the CB-filled rubbeis contain cathon black as filler, much hydrogen is absoibed in the rubbeis compared wfth the unfilled and silica-filled rubbeis. Because the increase of originated from the absorbed hydiogen by CB was underestimated, ft was inferred that PF showed smaller than '11 F Therefore, ft was supposed that 11>p for the CB-filled rubbeis, i.e., the CB-filled rubbem experienced more piessurization due to addftional hydiogen.

UR - http://www.scopus.com/inward/record.url?scp=84856488592&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856488592&partnerID=8YFLogxK

M3 - Article

VL - 77

SP - 323

EP - 334

JO - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

JF - Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A

SN - 0387-5008

IS - 774

ER -