Autoclave BMI prepreg PSB250 (BMI-CF)

Samples for testing were obtained by vacuum infusion based on PN-3M resin and carbon fabric 22502 (twill 2x2, 200 g/m2, HTA40-3K, 3.95 GPa)

Molding mode: 1)Heat 2°С/min to 145°С, vacuum –1bar, pressure 0 bar, 2)Hold at 145°C for 120 min, vacuum -1 bar, pressure 0 bar 3)Heat 2°C/min to 180°C, pressurize 5.5 bar, release vacuum 4)Hold at 180°C for 240 minutes, pressure 5.5 bar 5)Cool no faster than 5°C/min to 60°C, pressure 5.5 bar. Post-curing cycle: 1)Post-cure of the part can be carried out without a tooling, 2)Heat at rate 2°C/min to 180°C, 3)Heat no faster than 0.2°C/min to 230°C, 4)Holding at 230°C for 300min, 5)Cooling is not faster than 5°C/min to 25°C, 6)To achieve heat resistance up to 250°C, additional post-curing is required at 250°C for 240 minutes, 7)Heat from 230°C to 250°C at rate 2°C/min.