Details
| Original language | English |
|---|---|
| Pages (from-to) | 26-35 |
| Number of pages | 10 |
| Journal | KGK Kautschuk Gummi Kunststoffe |
| Volume | 71 |
| Issue number | 7-8 |
| Publication status | Published - 1 Jul 2018 |
| Externally published | Yes |
Abstract
With regard to the long-term stability of seals, “stress-relaxation” testing is known to deliver important information. The mechanism of stress relaxation is, however, difficult to interpret, as several effects take place simultaneously, with each effect itself dependent on external and internal parameters. This paper draws on a combination of stress relaxation experiments and low field NMR measurements. NMR relaxation curves as a function of aging time were analyzed using inverse Laplace transform. The resulting distributions of transversal relaxation times (T2) shows that during thermal oxidation the network structure and the chain mobility of cured EPDM, with and without carbon black filler, changes differently.
Keywords
- Aging, EPDM, Inverse laplace transform, Low field NMR, Transverse relaxation time
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Polymers and Plastics
- Engineering(all)
- Industrial and Manufacturing Engineering
- Materials Science(all)
- Materials Chemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: KGK Kautschuk Gummi Kunststoffe, Vol. 71, No. 7-8, 01.07.2018, p. 26-35.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The analysis of aging processes of EPDM elastomers using low field NMR with inverse laplace transform and stress relaxation measurements
AU - Aoyagi, Yuichi
AU - Giese, Ulrich
AU - Jungk, Juliane
AU - Beck, Klaus
PY - 2018/7/1
Y1 - 2018/7/1
N2 - With regard to the long-term stability of seals, “stress-relaxation” testing is known to deliver important information. The mechanism of stress relaxation is, however, difficult to interpret, as several effects take place simultaneously, with each effect itself dependent on external and internal parameters. This paper draws on a combination of stress relaxation experiments and low field NMR measurements. NMR relaxation curves as a function of aging time were analyzed using inverse Laplace transform. The resulting distributions of transversal relaxation times (T2) shows that during thermal oxidation the network structure and the chain mobility of cured EPDM, with and without carbon black filler, changes differently.
AB - With regard to the long-term stability of seals, “stress-relaxation” testing is known to deliver important information. The mechanism of stress relaxation is, however, difficult to interpret, as several effects take place simultaneously, with each effect itself dependent on external and internal parameters. This paper draws on a combination of stress relaxation experiments and low field NMR measurements. NMR relaxation curves as a function of aging time were analyzed using inverse Laplace transform. The resulting distributions of transversal relaxation times (T2) shows that during thermal oxidation the network structure and the chain mobility of cured EPDM, with and without carbon black filler, changes differently.
KW - Aging
KW - EPDM
KW - Inverse laplace transform
KW - Low field NMR
KW - Transverse relaxation time
UR - http://www.scopus.com/inward/record.url?scp=85051865696&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85051865696
VL - 71
SP - 26
EP - 35
JO - KGK Kautschuk Gummi Kunststoffe
JF - KGK Kautschuk Gummi Kunststoffe
SN - 0948-3276
IS - 7-8
ER -