
9: TRIAZOLE POLYMERS 235
This material can be used as polymer electrolytes
for fuel cells [100]. The polymers exhibit a superior
thermal and chemical stability and a good solubility
in many aprotic solvents.
9.5.13 Solid Propellants
Urethane curing systems have been long used as
solid propellants. Recently, a triazole curing system
has been introduced into a new binder recipe in which
azide groups in the polymer react with triple bonds of
a dipolarophile curing agent [101].
A triazole curing system in solid propellants makes
it possible to prepare an economically friendly,
chlorine-free, and smokeless glycidyl azide poly-
meric propellant. Bispropargyl