Thermally stable polybenzoxazines via ortho-norbornene functional benzoxazine monomers: Unique advantages in monomer synthesis, processing and polymer properties
作者:Kan Zhang、Hatsuo Ishida
DOI:10.1016/j.polymer.2015.04.044
日期:2015.6
corresponding thermosets. The benzoxazines containing norbornene groups can polymerize with multiple polymerization mechanisms rather than the single mechanism common to traditional 1,3-benzoxazine resins. The polymerization mechanisms are monitored by in situ FT-IR and differential scanning calorimetry (DSC). Activation energy of polymerization is also studied by DSC. Moreover, the thermoset derived from
具有邻-降冰片烯官能度的单官能和双官能苯并恶嗪已通过曼尼希缩合反应合成。合成单体的结构已通过1 H核磁共振波谱(NMR)和傅里叶变换红外光谱(FT-IR)得以确认。的邻位的降冰片烯官能苯并恶嗪树脂同时显示在苯并恶嗪的单体的合成和相应的热固性材料的性能优异的特性。含有降冰片烯基的苯并恶嗪可以通过多种聚合机理进行聚合,而不是传统的1,3-苯并恶嗪树脂常见的单一机理进行聚合。通过原位监测聚合机理FT-IR和差示扫描量热法(DSC)。DSC还研究了聚合的活化能。而且,衍生自双官能苯并恶嗪单体的热固性材料具有365℃的玻璃化转变温度和463℃的高T d5的高热稳定性。