Solid propellant binder composition for three-dimensional network

A solid propellant binder composition comprising:

• an azide polymer containing hydroxyl groups at both ends and azide groups in the side chain, as a prepolymer,
• a difunctional isocyanate compound as a urethane curing agent;
• and
• a compound containing an alkyne group as a triazole curing agent,
• wherein the compound containing the alkyne group is represented by the following formula 2 or formula 3:
• wherein in the formula 2, R is an alkylene group having 1 to 10 carbon atoms or polycaprolactone having a molecular weight of 300 to 1000 g/mol;
• and
• wherein in the formula 3, R is an alkylene group having 1 to 10 carbon atoms.

A solid propellant binder composition comprising:

• an azide polymer containing hydroxyl groups at both ends and azide groups in the side chain, as a prepolymer,
• a difunctional isocyanate compound as a urethane curing agent;
• and
• a compound containing an alkene group as a triazoline curing agent,
• wherein the compound containing the alkene group is represented by the following formula 4:
• wherein in the formula 4, R is phenylene or methylene di-4,1-phenylene.

A solid propellant binder composition comprising:

• an azide polymer containing hydroxyl groups at both ends and azide groups in the side chain, as a prepolymer,
• a difunctional isocyanate compound as a urethane curing agent;
• and
• a compound containing an alkyne group as a triazole curing agent,
• wherein the compound containing the alkyne group is represented by the following formula 5:
• wherein in the formula 5, R is an alkylene group having 1 to 10 carbon atoms.