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Effects of Long-Term Flex-Fuel Exposure on Fluorocarbon Elastomers
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Abstract
Long-term exposure of typical fluorocarbon elastomers in methanol fuel mixtures indicates three very important results for the automotive fuel-system design engineer:
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(1)
Fluorocarbon elastomers reach an equilibrium in those solutions after a short exposure, usually within 48 hours to 1 week of initial immersion, depending upon the fuel mixture and the test temperature.
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(2)
The low-temperature flexibility (as measured by TR-10) of fluorocarbon elastomers is improved by a short immersion in these fuels.
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(3)
“High fluorine” (greater than 66% F) fluoroelastomers are preferable over the standard grades for their superior resistance to methanol/gasoline blended fuels over an extended term.
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Authors
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Citation
Balzer, J. and Sohlo, A., "Effects of Long-Term Flex-Fuel Exposure on Fluorocarbon Elastomers," SAE Technical Paper 900118, 1990, https://doi.org/10.4271/900118.Also In
References
- Brullo R.A. Davis E.A. Sohlo A.M. “Compatibility of FLUOREL Brand Fluoroealstomers With Methanol-Containing Fuels” Commercial Chemicals Division/3M Technical Report March 1 1983