methylsulfonic acid. A novel allylamine-based benzoxazine monomer containing fluorene rings and polymerizable groups (t-BF-sa-a) was obtained using the o-hydroxy-benzyl amine method combined with a one stage Mannich condensation reaction. The results showed that the introduction of fluorene rings and polymerizable groups and the increase of the number of oxazine rings in the polymer network structure can
在本文中,2,7-二羟基-9,9-双(4-
氨基苯基) -
芴(BADHF)单体合成通过由
甲磺酸催化的直接缩合反应。使用邻-羟基-苄基胺法结合一级曼尼希缩合反应,得到了一种新的含
芴环和可聚合基团(t -BF-sa-a)的
烯丙基胺基苯并恶嗪单体。结果表明,
芴环和可聚合基团的引入以及聚合物网络结构中恶嗪环数目的增加可导致聚合物的交联密度明显增加。因此,t -BF-sa-a聚苯并恶嗪(poly(t-BF-sa-a))表现出更高的
玻璃化转变温度(T g)和更好的热稳定性。合成的t -BF-sa-a单体用于修饰传统的基于
苯酚-
苯胺的单官能(Pa)和基于
双酚A-
苯胺的双官能(BA-a)苯并恶嗪。由于引入了耐热
芴环并提高了共聚物的交联度,因此共聚物(聚(Pa / t -BF-sa-a)和聚(BA-a / t -BF-sa-a) ))具有极好的热性能。其中,poly(Pa / t的T g,T 5,T 10和Y