writer：Zhan ZM, Yan HQ*, Yin P, Cheng J, Fang ZP
keywords：bio-based benzoxazine; synthesis; low-temperature curing ability; thermal stability
source：期刊
specific source：Polymer International, 2020.4, 69(4): 355-362
Issue time：2020年
A novel bio-based benzoxazine resin (diphenolic acid/furfurylamine benzoxazine resin, PDPA-F-Boz) was prepared by using bio-based diphenolic acid, furfurylamine and paraformaldehyde as raw materials. The structure of DPA-F-Boz monomer was characterized by Fourier transform infrared spectroscopy, 1H NMR and 13C NMR, and then its curing reaction and the thermal stability of the cured PDPA-F-Boz were analyzed. Compared with the traditional fossil-based benzoxazine (bisphenol A/anilinebenzoxazine,BPA-A-Boz) andthebio-basedbenzoxazine (diphenolic acid/anilinebenzoxazine,DPA-A-Boz), DPA-F-Boz monomer showed the lowest curing temperature, and PDPA-F-Boz had the highest residual char ratio at 800 °C and the lowest degradation rate at the peak temperature.Meanwhile, the total heat release, peak heat release rate and heat release capacity of PDPA-F-Boz were much lower than those of PBPA-A-Boz and PDPA-A-Boz. Thus, PDPA-F-Boz showed excellent low-temperature curing ability and thermal stability.