【摘要】 选取六种不同酚源的烯丙胺型苯并嗪,研究苯并嗪官能团结构上不同取代基团对此类苯并嗪中间体的性质及其树脂热性能的影响。FTIR测试结果显示,取代基团影响嗪环的特征吸收峰值,嗪环特征峰随场/诱导效应常数的增大而降低。同时,场/诱导效应的增大降低了苯并嗪中间体中官能团的反应温度。通过DMTA和TG分析了六种聚苯并嗪树脂,结果显示,场/诱导效应的增大虽能增大嗪树脂的残碳率,但降低了嗪树脂的耐热性能和热稳定性。更多还原

【Abstract】 Six allylamine-benzoxazines synthesized from different phenols were chosen to study in the article. It is confirmed that different substituents which gear into the benzoxazine functional structures have a regularity influence on benzoxazines and their polymers, among them the most important of the substituent effect is field/induction effect. The FT-IR results indicate that substituents influence the position of absorbing peak. DSC thermograms display that the exothermic temperatures are increased with a decrease in the field/induction effect constants. DMTA and TG were also used to analyse the substituent effect. It demonstrates that the field/induction effect constants have a direct proportion relationship with the polybenzoxazines char yield, but the thermal stability and the heat durability decrease with an increase in the field/induction effect constants.更多还原