Abstract:At present, all the high-temperature cured structural adhesive film are imported for the domestic civil aircraft projects. With the further application of domestic prepreg/composite materials in the field of civil aircraft, it is particularly important to develop the domestic high-temperature cured structural adhesive film. The structural adhesive film ACTECH1302F, which was independently developed and cured at high temperature (180 ℃), was tested and analyzed by infrared, gel time, rheological test and DSC in the paper. Test results indicate that the system of ACTECH1302F adhesive film and BA3202W prepreg have good compatibility. Besides, the mechanical properties of the adhesive film, such as double-lap shear strength and mode I interlaminar fracture toughness (GIC) were significantly better than the index values of high-temperature cured structural adhesive film used for civil aircraft composite materials. The structural adhesive film ACTECH1302F could match the system of domestic high temperature curing prepreg BA3202W, initially meeting the key technical requirements of high-temperature cured structure adhesive film for civil aircraft composites.