Qualitative analysis of migration components in the interface of NEPE propellant

The migration components with different boiling point in the interface of standard ф25 mm cylinder specimen of NEPE propellant/liner/insulation were determined by using gas chromatography-mass spectrometry(GC-MS) at different experimental condition.The results show that the main migration components in propellant are plasticizer nitroglycerin(NG)and 1,2,4-butanetriol tri-nitrate(BTTN),and stabilizer AD as well as the burning catalyzer octyl dicyclopentadienyl iron(ODCI),which could migrate to the liner and insulation.The main migration component in line is plasticizer dioctyl sebacate(DOS),which migrates only to the insulation,not to the propellant.