In this blog post, we discuss the influence of fuels and oils on different high performance polymers.
Generally,
plastics show a good resistance towards fuels (Diesel and Gasoline), oils and
greases. Especially, applications used in air- and spacecraft need to be resistant
towards aggressive lubricants such as turbine oil and hydraulic oil.
Among the
high performance polymers, PEEK, PAI, and PI are often used for applications in
air- and spacecraft. If polymers such as PEEK, PAI and PI are exposed to
hydraulic oil (for example Skydrol) for a long time (1000 hours), then no significant
reduction of mechanical properties could be seen [1]. Tensile strength properties were reduced below
5% in comparison to their initial value. PAI and PI keep their properties nearly
on the initial level (tested at a temperature of 120°C). PEEK, PAI, and PI are
also resistant towards turbine oils.
Below
an overview of the resistance of different high performance polymers towards fuels,
oils and greases is shown.
 |
| Fuel and Oil Resistance of High Performance Polymers |
Checking your application for the need of fuel, oil and greases resistance already during material selection will decrease chances of plastics part failure at a later stage.
Thanks
for reading and #findoutaboutplastics,
Herwig
Literature
[1] https://www.polytron-gmbh.de/unternehmen.aspx
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