Elastomer Swell Behavior in 1-Propanol, Diisobutylene, Cyclopentanone, and a Furan Mixture Blended in E10 and a Blendstock for Oxygenate Blending (BOB)
Journal Article
04-12-03-0011
ISSN: 1946-3952, e-ISSN: 1946-3960
Sector:
Topic:
Citation:
Kass, M., Janke, C., Connatser, R., and West, B., "Elastomer Swell Behavior in 1-Propanol, Diisobutylene, Cyclopentanone, and a Furan Mixture Blended in E10 and a Blendstock for Oxygenate Blending (BOB)," SAE Int. J. Fuels Lubr. 12(3):167-182, 2019, https://doi.org/10.4271/04-12-03-0011.
Language:
English
Abstract:
The compatibility of four potential bio-derived blendstock molecules with
infrastructure elastomers was determined by measuring the volume change
following exposure. The blendstock molecules included 1-propanol, diisobutylene,
cyclopentanone, and a furan mixture. The elastomers included two fluorocarbons,
six nitrile rubbers (NBRs), and one each of fluorosilicone, neoprene,
polyurethane, and silicone. The elastomers were exposed to the fuel molecules as
blends ranging from 0 to 30 vol.% in both a blendstock for oxygenate blending
(BOB) formulation and an E10 fuel. Silicone exhibited excessive swelling in each
test fuel, while the other elastomers showed good compatibility (low swell) with
diisobutylene, 1-propanol, and the furan mixture when BOB was used as the base
fuel. The E10 base fuel produced high (>30%) swell in neoprene, polyurethane,
and some nitrile rubbers. In most cases diisobutylene produced the least amount
of volume expansion. In contrast, the addition of cyclopentanone produced
unacceptably high swelling in each elastomer and is not considered suitable for
use with these fuels. Analysis of the results showed that the swelling behavior
is predominantly due to the polarity of the elastomer and test fuels.