Introducing of fluorinated substituents into molecular chains was an efficient way to prepare materials with decreased dielectric constant and loss. In this work, a kind of fluorinated phthalonitrile containing benzoxazine (BPAF-ph) was synthesized. Curing reactions and processability were investigated by DSC and dynamic rheological analysis (DRA). Non-isothermal curing kinetics analysis was applied to calculate the activation energy of BPAF-ph. Results showed that BPAF-ph exhibited obvious double-stage curing reaction behaviors and good processability. Based on the results of DSC and DRA, cured BPAF-ph was firstly fabricated at 200 °C. Then, BPAF-ph matrix resin was treated with different post heat-treatment procedures. Generated structures and properties of BPAF-ph matrix resins with different post curing procedures were investigated. Results showed that generated structures could be obviously influenced by the curing procedures. Relative low dielectric constants and loss of cured BPAF-ph was obtained and could be decreased with increasing of curing degree. BPAF-ph matrix resins also possessed good thermomechanical properties (50–250 °C: CTE ~ 41.1 ppm/^oC; T_g ~ 327 °C) and thermal stability (T_5%> 450 °C). Additionally, glass fiber reinforced BPAF-ph composites were prepared and their properties were investigated.

将氟化取代基引入分子链是制备具有降低介电常数和损耗的材料的有效方法。在这项工作中，合成了一种含苯并恶嗪的氟化邻苯二甲腈（BPAF-ph）。通过DSC和动态流变分析(DRA)研究固化反应和加工性。应用非等温固化动力学分析来计算BPAF-ph的活化能。结果表明，BPAF-ph表现出明显的双阶段固化反应行为和良好的加工性能。根据 DSC 和 DRA 的结果，首先在 200 °C 下制备了固化的 BPAF-ph。然后，BPAF-ph 基体树脂用不同的后热处理程序处理。研究了具有不同后固化程序的 BPAF-ph 基体树脂的生成结构和性能。结果表明，固化过程对生成的结构有明显的影响。获得了相对较低的介电常数和固化后的 BPAF-ph 损失，并且可以随着固化程度的增加而降低。BPAF-ph 基体树脂还具有良好的热机械性能 (50–250 °C: CTE ~ 41.1 ppm/^○ C; T _g  ~ 327 °C) 和热稳定性 ( T _5% > 450 °C)。此外，制备了玻璃纤维增​​强 BPAF-ph 复合材料并研究了它们的性能。