目前工业上大量使用的聚酰亚胺材料以均苯型为主,而在机械强度要求更高、耐化学性更好及具有存储性、液晶效果、低介电常数等特殊应用的场合,联苯型聚酰亚胺的运用已经不可或缺。对含有特征元素或基团的联苯型聚酰亚胺的合成方法、新的性能和特色功能进行了综述,并介绍了联苯型聚酰亚胺的最新研究及应用的进展。最后,对其应用前景做了展望。 At present, a large amount of polyimide materials used in industry are mainly benzene-type, but in special applications such as higher mechanical strength, better chemical resistance, storage property, liquid crystal effect and low dielectric constant, The use of benzene type polyimide has been indispensable. The synthesis methods, new properties and special functions of biphenyl polyimide containing characteristic elements or groups are reviewed. The latest research and application progress of biphenyl polyimide are also introduced. Finally, the prospect of its application is prospected.