Mechanical properties of NEPE propellant containing CL-20

The interaction between four bonding agents and CL-20 was investigated by means of XPS and MIR. The analysis proves that bonding agents can act as the liner of CL-20 and a bonding agent containing hydantoin and tripolyisocynate, which is defined as 22^#, is the best liner of CL-20 owing to its cyclic structure and polar groups. The mechanical properties of NEPE propellant containing CL-20 with 22^# as bonding agent were studied by tensile test. The test results show that the mechanical properties of NEPE propellant are improved and the tensile strength and elongation-to-break are improved by about 18.8% and 103.4% respectively owing to the addition of CL-20. And the tensile strength of propellant increase with the increasing of the content of PET with three functional groups (f = 3) as bonding agent.