Biobased diamine, difuran diamine (B-DFDA) synthesized from benzaldehyde and furfurylamine, was innovatively used to synthesize novel bio-based benzoxazine (V-bfa and Gu-bfa) by reacting with vanillin and guaiacol, respectively. The curing behavior was studied by differential scanning calorimetry (DSC) and fourier transform infrared spectroscopy (FT-IR), revealing that V-bfa has a low curing temperature, and the aldehyde group was not only consumed but also engaged in the formation of hydrogen bonds. Meanwhile, the V-bfa monomer required lower activation energy (E_k = 119.2 kJ/mol and E_o = 120.9 kJ/mol), suggesting that the aldehyde group has a more unique effect, which may promote the ring opening of oxazine rings. Compared with poly(Gu-bfa), poly(V-bfa) has better mechanical properties, higher glass transition temperature (248 °C) and char yield (59.8%). At the same time, its lower dielectric constant (k) makes it promising for application in the field of electronic packaging and communications.

以苯甲醛和糠胺为原料合成的生物基二胺二呋喃二胺（B-DFDA），分别与香草醛和愈创木酚反应，创新性地合成了新型生物基苯并恶嗪（V-bfa和Gu-bfa） 。通过差示扫描量热法（DSC）和傅里叶变换红外光谱（FT-IR）研究了其固化行为，表明V-bfa具有较低的固化温度，且醛基不仅被消耗而且参与了氢的形成。债券。同时，V-bfa单体需要较低的活化能（ E_k = 119.2 kJ/mol和E_o  = 120.9 kJ/mol），表明醛基具有更独特的作用，可能促进恶嗪环的开环。与聚(Gu-bfa)相比，聚(V-bfa)具有更好的机械性能、更高的玻璃化转变温度(248℃)和生炭率(59.8%)。同时，其较低的介电常数（ k）使其在电子封装和通信领域具有广阔的应用前景。