A new tri-functional phthalonitrile monomer tris(3-(3,4-dicyanophenoxy)phenyl) phosphate (TPP) was first synthesized and characterized with the intent of increasing the cross-linking rate of phthalonitrile resins. By combining TTP and di-functional phthalonitrile with aromatic diamine easy-processable formulations (η < 200 mPa·s at 150 °C) were developed. Thermosets were derived from the formulations by curing at 330 and 375 °C. The polymers that were post-cured at 375 °C demonstrated Young's moduli up to 7.2 GPa — which is the highest value reported for phthalonitriles. Thermal stability of these materials was on the high level featured to phthalonitriles (T_g > 450 °C, T_5% > 500 °C, TOS_5% > 500 °C, Y_c at 900 °C > 80%). TPP, the introduced monomer, can be used as a stiffness increasing additive with common di-functional phthalonitriles, and easy-processable formulations for cost-effective techniques of composites manufacturing.

首先合成了一种新的三官能邻苯二甲腈单体三（3-（3,4-二氰基苯氧基）苯基）磷酸酯（TPP），并进行了表征，目的是提高邻苯二甲腈树脂的交联速率。通过将TTP和双官能邻苯二甲腈与芳族二胺结合使用，开发了易于加工的配方（在150°C下η<200 mPa·s）。通过在330和375°C下固化，从配方中获得热固性塑料。在375°C下后固化的聚合物表现出的杨氏模量高达7.2 GPa，这是邻苯二甲腈报告的最高值。这些材料的热稳定性具有很高的对苯二甲腈性能（T _g  > 450°C，T _5％  > 500°C，TOS _5％  > 500°C，Y _c在900°C> 80％时）。TPP（引入的单体）可以与普通的双官能邻苯二甲腈一起使用，并可以用作提高刚度的添加剂，并且易于加工的配方可用于经济高效的复合材料制造技术。