To meet the compatibility requirements of materials used in liquid oxygen/kerosene rocket engines,a comparative experimental study was conducted by the soaking method on the compatibility of aluminum alloy 2219/polymethacrylimide(PMI)bonding specimens and PMI/PMI bonding specimens with petroleum based and coal based aerospace kerosene,respectively,which are composed of three adhesives(DW-1 low-temperature adhesive,DW-3 low-temperature adhesive,J-249 adhesive).The obtained bonding specimens were soaked in two types of aerospace kerosene at-60-50 ℃,and the tensile performance on the soaked bonding specimens were tested.The results show that the three adhesives can still effectively bond the bonding specimens after being soaked in two types of aerospace kerosene within the temperature range of-60-50 ℃,and the DW-1 and DW-3 adhesives perform better in low temperature environment.The high temperature environment will weaken the interface between DW-1 adhesive and alloy 2219,while J-249 adhesive and coal-based aerospace kerosene show better adaptability.
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