In this study, a polybenzoxazine, (PPab) based on phenol and 4-aminomethyl benzoate and its composites containing various amounts of 3-hydroxyphenylboronic acid, (HB) were prepared by stepwise curing. It has been found that thermal properties of composites were improved as the amount of HB introduced was increased. The improvements in thermal characteristics were associated with condensation reactions of hydroxyl groups of polybenzoxazine and ester groups on the aniline linkages yielding a highly cross-linked structure. In addition, application of direct pyrolysis mass spectrometry, DP-MS, technique supplied information pointing out generation of a boroxine network by self-condensation reactions of B-OH groups.

在这项研究中，通过逐步固化制备了一种基于苯酚和4-氨基甲基苯甲酸酯的聚苯并恶嗪（PPab）及其包含各种量的3-羟基苯基硼酸（HB）的复合材料。已经发现，随着HB引入量的增加，复合材料的热性能得到改善。热特性的改善与聚苯并恶嗪的羟基和苯胺键上的酯基的缩合反应有关，从而产生高度交联的结构。此外，直接热解质谱法DP-MS的应用提供了信息，指出通过B-OH基团的自缩合反应生成环硼氧烷网络。