Resin synthesis: Phenol, cashew phenol, and formaldehyde are used as raw materials and polymerized at 95-100°C for 40-60 minutes, with triethylamine as a catalyst.
Boron modification process: 3-hydroxybenzeneboronic acid is added for co-condensation, and the boron-doped resin material (carbon content 89.3%) is obtained after carbonization.
Ester curing process: The optimal curing agent dosage is 25%, the resin dosage is 1.5-2.0%, and the thermal decomposition starting temperature reaches 310°C.
