高强度PBT叠氮四组元推进剂的制备工艺及力学性能OA

In order to solve the problem of poor process performances and low mechanical properties of PBT azide four-component propellant slurry,the influence of process additives,network modifiers and other factors on process per-formances and mechanical properties of the propellant was studied.The results show that when WL-02 is used as a network modifier and process additive GZ-1 is added,the torque of the mixer before adding the curing agent could be reduced by 60％.After adding the curing agent,the initial viscosity of the propellant slurry is 314.7 Pa·s,and the usage period ex-ceeds 3 hours.When WL-02 is used as a network modifier and JH-1+JH-2 is used as a composite bonding agent,with cu-ring parameters of 0.95-1.00 and crosslinking parameters of 0.3,the tensile strength of the propellant at 20℃ is not less than 2 000 kPa,and the elongation at-50,20 and 70℃ is not less than 25％.The PBT azide propellant prepared demonstrates excellent process characteristics and mechanical performances,satisfying all requirements in conventional free loading structure engine charging.