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Characterization of Fuel Resistant Fluorosilicones
Keywords: fluorosilicone, swell , fuel resistant
Characterization of Fuel Resistant Fluorosilicones Vincent Malave & Michelle Velderrain NuSil Technology LLC The needs of the auto industry are consistently changing, but what does not change for the material supplier is the need to deliver materials that ensure reliability for performance standards and fast processing times to reduce production costs. Silicones are commonly used in automotive applications as potting compounds, adhesives, gaskets, seals, and encapsulants due to their ability to resist degradation at high temperatures and remain elastic at low temperatures. Where fuel resistance is needed, fluorosilicones provide long term reliability since these silicones have magnitudes’ lower swell than dimethyl silicones when exposed to fuels and hydrocarbon-based solvents. This study will focus on a comparison between different high mol % fluorosilicone formulations and polydimethylsiloxane (PDMS) materials in regard to swell. Results show that regardless of individual formulations, fluorosilicones have minimal swell in fluids commonly found in the automotive industry when compared to their PDMS counterparts.
Vincent Malave,
NuSil Technology LLC
Carpinteria, CA

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