含DOPO的双酚A-单苯并嗪合成、表征及其固化特性

摘要

Double benzoxazine based on bisphenol A(DBOZ)was synthesized from bisphenol A, aniline and paraformaldehyde, and the single benzoxazine containing DOPO based on bisphenol A(DBDO)was synthesized from DBOZ and DOPO. FT-IR, NMR (1H NMR and 13CNMR) were used to characterize the chemical structure of DBOZ and DBDO. Curing characteristics were studied with DSC and thermostability was studied with TG. In N2 atmosphere, the ring opening polymerization of DBOZ took place at about 205℃, and initial decomposition temperature was 312℃. At 373℃, the fastest decomposition was achieved. At 800℃, carbon residue was 37.19%. In N2 atmosphere, initial decomposition temperature of DBDO was 353℃. At 443℃, the fastest decomposition was achieved. At 800℃, carbon residue was 39.60%.%以双酚A、苯胺、多聚甲醛为原料，合成了双酚A-双苯并嗪（DBOZ），再用其与DOPO(9，10-二氢-9-氧杂-10-磷杂菲-10-氧化物)反应，合成了含DOPO的双酚A-单苯并嗪（DBDO）。采用红外、核磁共振(氢谱核磁共振和碳谱核磁共振)等分析手段对DBOZ和DBDO的化学结构进行了表征；采用差示扫描量热仪对DBOZ和DBDO的固化特性进行研究，使用热重分析分析了所得聚苯并嗪的热稳定性。结果表明：在N2气氛中，DBOZ在205℃左右开环聚合，热分解温度为312℃，在373℃分解速度达到最快，在800℃时的残碳率为37.19%；在N2气氛中，DBDO的热分解温度为353℃，在443℃分解速度达到最快，在800℃时的残碳率为39.60%。