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> Material Choices > Q2
> Polyimide resins.
These
are better still than bismaleimide
resins in hot/wet conditions, and are probably the most widely
used resins for high temperature applications, although the
top service temperature will depend strongly on the nature
of the application. While they suffer from brittleness, they
can be used for sustained periods at temperatures over 300°C.
The
curing technique is different from other materials being by
a condensation reaction. This tends to produce voids in the
cured article. Additional reactions can be used instead to
reduce or eliminate this problem.
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