【摘要】 聚苯基单醚喹噁啉是从芳香族四胺和芳香族四酮缩聚制得。我们以对苯二甲腈为原料,采用二甲基亚砜为氧化剂,简便地合成芳香族四酮。聚合时系统地研究了单体不同克分子比合成的树脂对各种性能的影响,从而对这类树脂的加工成型提供了实验的数据。我们认为这种树脂可以作为在水、化学介质或油环境中使用的绝缘材料。更多还原

【Abstract】 Polyphenylquinoxaline (PPQ) was usually synthesized from tetraamine and te-traketone. We found that the oxidizing agent--selenium oxide (SeO2) commonlyused in the synthesis of tetraketone was not satisfactory. In this work we replaced selenium oxide by dimethyl sulfoxide (DMSO), resulting in a simplified procedure, lower cost and high purity. In order to facilitate the coating process, stable solutions of relatively high molecular weight PPQ were prepared by changing the stoichio-metry with 1-2% excess of tetraketone. All properties of these polymers were determined on their films and varnished wires. It was shown that the PPQ can be used as a good water resistant, chemical resistant and/or oil resistant materials.更多还原