基于苯甲醛衍生双酚的苯并嗪树脂的合成、表征及热固化反应研究  

Synthesis,characterization and thermal curing reaction of benzoxazine based on benzaldehyde bisphenol derivative

作　　者：李胜方[1,2] 刘爱红[3] 刘晋[1] 

机构地区：[1]湖北理工学院化学与化工学院,黄石435003 [2]湖北理工学院矿区环境污染控制与修复湖北省重点实验室,黄石435003 [3]湖北理工学院材料与冶金学院,黄石435003

出　　处：《化工新型材料》2016年第1期156-158,共3页New Chemical Materials

基　　金：湖北省自然科学基金项目(2013CFB040);国家中小企业创新基金项目(13C26214203939)

摘　　要：以苯甲醛衍生双酚、甲醛和苯胺为原料,合成了苯甲醛衍生双酚型苯并嗪树脂（BBA-a）。用核磁共振氢谱（~1H-NMR）和红外光谱（FT-IR）对BBA-a进行了表征。热重（TG）表明固化树脂在氮气中热失重5%和10%的温度分别为293℃和339℃,氮气气氛下800℃时的残碳率为42%。采用FT-IR和差示量热扫描（DSC）方法研究了BBA-a的固化反应和非等温固化动力学。用Kissinger和Ozawa方式计算BBA-a的固化反应活化能分别为94.8和98.4kJ/mol,指前因子为6.15×1015,反应级数为1.04。用T-β线性外推法确定了BBA-a的固化工艺参数。A novel benzoxazine monomer（BBA-a）was synthesized from benzaldehyde bisphenol derivative,formaldehyde and aniline.The chemical structure of BBA-a was confirmed by 1 H-NMR and FT-IR.Thermogravimetric analysis（TG）showed that the 5% and 10% mass loss temperature of the polybenzoxazine cured from BBA-a were 293℃ and339℃,respectively.The char yield at 800℃ was 42%in nitrogen.The thermal polymerization of monomer was investigated by FT-IR and non-isothermal differential scanning calorimetry（DSC）at different heating rate.The activation energies of the non-isothermal polymerization were 94.8and 98.2kJ/mol evaluated with Kissinger and Ozawa methods,respectively.The pre-exponential factor was 1.86×106.The reaction grade was 1.04.The parameters of curing process were determined by T-βlinear fitting extrapolation.

关 键 词：苯并嗪 苯甲醛衍生双酚 固化动力学 热稳定性 

分 类 号：TQ323.1[化学工程—合成树脂塑料工业]