中文摘要：

以9-芴酮、苯酚为原料,以质量分数为98%的浓硫酸为催化剂,2-巯基丙酸为助催化剂,合成了双酚芴[9,9-双（4-羟苯基）芴],再用其与乙二胺和多聚甲醛反应,合成了线性双酚芴双胺型苯并噁嗪树脂（BF-eda树脂）.采用FTIR,1H NMR和13C NMR等分析手段对双酚芴和BF-eda树脂的化学结构进行了表征;用凝胶渗透色谱法测得BF-eda树脂的数均分子量为4690,分子量分布PDI为2.93;采用DSC对BF-eda树脂的热固化行为进行了研究,并使用TGA分析了所得聚苯并噁嗪的热稳定性.在N2气氛中,BF-eda树脂在253℃左右开环聚合,聚苯并噁嗪的分解温度为344℃,失重5%时的温度为357℃,900℃时的残炭率为51%.

英文摘要：

9,9-Bis（4-hydroxyphenyl）-fluorene（bisphenol fluorene,BHPF） was synthesized from phenol and 9-fluorenone using 98% sulfuric acid as catalyst and 2-mercaptopropionic as promoter,and then a linear BHPF-diamine benzoxazine（BF-eda resin） was synthesized using BHPF,ethylenediamine and paraformaldehyde.The chemical structure of BHPF and BF-eda resin were verified by Fourier transform infrared spectroscopy（FTIR）,1H and 13C nuclear magnetic resonance spectroscopies（NMR）.The GPC analysis presents the number average molecular weight of BF-eda resin is 4690,and the polydispersity index（PDI） is 2.93.The curing behavior of BF-eda resin was studied by differential scanning calorimetry（DSC） and the thermal stabilization of polybenzoxazine was evaluated with thermogravimetric analysis（TGA）.The ring-opening polymerization temperature of BF-eda resin is about 253 ℃,the thermal decomposition temperature of polybenzoxazine is 344 ℃,the temperature at 5% weight loss is 357 ℃,and the char yield ratio is 51% at 900 ℃.