TY - JOUR
T1 - Penetrated hydrogen content and volume inflation in unfilled NBR exposed to high-pressure hydrogen–What are the characteristics of unfilled-NBR dominating them?
AU - Ono, Hiroaki
AU - Fujiwara, Hirotada
AU - Nishimura, Shin
N1 - Funding Information:
This paper is based on results obtained from a project commissioned by the New Energy and Industrial Technology Development Organization (NEDO). The authors are very grateful to Mr. Fumihiro Tanaka and Ms. Miho Ono who collected data and operated high-pressure hydrogen exposure test for this paper. The authors also acknowledge Mr. Hiroshi Tanimura for proofreading.
Publisher Copyright:
© 2018 Hydrogen Energy Publications LLC
PY - 2018/9/27
Y1 - 2018/9/27
N2 - A series of unfilled acrylonitrile butadiene rubber (NBR) composites, which consists of several types of NBR with acrylonitrile (AN) monomer unit ratio (ΧAN) and sulfur or dicumyl peroxide (DPO) as a vulcanizer, were exposed to 90 MPa hydrogen gas to measure the saturated hydrogen content: C.H(0) and the volume change ratio when the sample volume is the maximum: VMAX/V0. The aim of this paper is to reveal the dominant characteristics for C.H(0) and VMAX/V0 of unfilled NBR composites. Mechanical properties, ΧAN, the molecular weight of the number average molecular weight between the effective crosslinks (Mef), the molecular weight between the chemical crosslink (MC) and the fractional free volume (FFV) were employed to examine the relationship between the characteristics and C.H(0) and VMAX/V0 of the NBR composites. Judging from the results of the comparisons of C.H(0) and VMAX/V0 with ΧAN, Mef, MC and FFV, it is revealed that C.H(0) and VMAX/V0 were dominantly correlate with FFV and MC, respectively.
AB - A series of unfilled acrylonitrile butadiene rubber (NBR) composites, which consists of several types of NBR with acrylonitrile (AN) monomer unit ratio (ΧAN) and sulfur or dicumyl peroxide (DPO) as a vulcanizer, were exposed to 90 MPa hydrogen gas to measure the saturated hydrogen content: C.H(0) and the volume change ratio when the sample volume is the maximum: VMAX/V0. The aim of this paper is to reveal the dominant characteristics for C.H(0) and VMAX/V0 of unfilled NBR composites. Mechanical properties, ΧAN, the molecular weight of the number average molecular weight between the effective crosslinks (Mef), the molecular weight between the chemical crosslink (MC) and the fractional free volume (FFV) were employed to examine the relationship between the characteristics and C.H(0) and VMAX/V0 of the NBR composites. Judging from the results of the comparisons of C.H(0) and VMAX/V0 with ΧAN, Mef, MC and FFV, it is revealed that C.H(0) and VMAX/V0 were dominantly correlate with FFV and MC, respectively.
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U2 - 10.1016/j.ijhydene.2018.08.031
DO - 10.1016/j.ijhydene.2018.08.031
M3 - Article
AN - SCOPUS:85053802462
SN - 0360-3199
VL - 43
SP - 18392
EP - 18402
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 39
ER -
