CHEN Yang, SHI Tiejun, QIAN Ying, et al. Synthesis of novel boron containing benzoxazine and its thermal properties with epoxy resin blends[J]. CIESC Journal, 2017, (6): 2604-2610.
CHEN Yang, SHI Tiejun, QIAN Ying, et al. Synthesis of novel boron containing benzoxazine and its thermal properties with epoxy resin blends[J]. CIESC Journal, 2017, (6): 2604-2610.DOI: 10.11949/j.issn.0438-1157.20161816.
The boric acid ethanolamine ester (BAE) was synthesized using boric acid and ethanolamine. The synthesis of benzoxazine contained boron (BAE-BOZ) was synthesized by using BAE
phenol and paraformaldehyde. The BAE-BOZ are mixed with epoxy resin in different proportions
and then cured by high temperature. Using FT-IR
1H NMR and 13C NMR analysis of the chemical structure of BAE-BOZ
proved that the target product has been synthesized. Curing properties on BAE-BOZ was studied with DSC
the thermal stability of poly(BAE-BOZ) cured BAE-BOZ/E-51 were studied by using TG analysis. The results showed that the curing peak of BOZ appeared at 218℃
B and oxazine ring were combined by B O C
and the highest the boric content in BAE-BOZ was 8.67%
the initial pyrolysis temperature was about 302℃
and the carbon residual at 800℃ increased from 41.80% to 58.08%. The thermal decomposition temperature of BAE-BOZ/E-51 copolymer reached 343℃.