The curing characteristics of FM73M adhesive film was monitored by DSC and investigated under different
heating rates. According to the DSC graph, the theoretical parameters such as gelation temperature, peak temperature
and the kinetic model of FM73M adhesive film were acquired. And then 125±2℃ /90min is confirmed as the
actual curing of the film. The distribution of FM73M adhesive film in the PMI foam core and the interface between the
foam core and the film (interface wetting situation, porosity, defects) were observed by SEM. The adhesive mechanism
of PMI foam and FM73M adhesive film was analyzed.