A Novel Study On The Migration Property Of Components In Propellant/Liner

The physical and chemical mechanism of propellant / liner interface debonding failure is one of the most important part of the rocket engine failure. The bond performance of propellant/liner is deeply affected by components migration in propellant. At present, the specimen is mensurated the components migration by chemical equipment(FTER), which on the liner/propellant bonding joint or the rocket engine is long reposited or accelerated aginged, is selected in the liner and propellant ,which is the the main method of migration study. Because the content of functional additives is in low, the migration rate is slow,even it exceeds the test precision instruments. The quantity measured by this method is only statistics average value of liner, is not of the characteristics of migration about a specific component.In a long time, the way and method of migration dynamics is lack in domestic and international. By the research of migration mechanism about components in the polymer, and it was found approximately like the mass transfer mechanism of pervaporation. By drawing from pervaporation testing principle in membrane science and technology, design and machining the testing device that test the seepage flux about the liquid group in propellant. Propellant lining material is obtained through synthesis or curing. Preparation and the optimum conditions of membrane about lining materials is obtained. The seepage flux is got about migration of different groups in different membrane of the lining materials , and the effect of temperature, curing agent content. The dynamic model of components migration is explored on the base pervaporation. The dynamic volume of components migration in propellant was obtained. For studying the influence of components migration on bonding performance of propellant / liner interface, a new way is explored.