2，3，3’，4’-联苯四酸二酐的制备及其聚酰亚胺的合成  

Study on 2,3,3′,4′-biphenyltetracarboxylic dianhydride and polyimide

作　　者：孙慧媛[1] 张晓蕾 张均[3] 周海军 李彦涛 付美玲[1] 

机构地区：[1]河北工业大学,天津300130 [2]河北省能源研究所,石家庄050081 [3]石家庄职业技术学院,石家庄050081

出　　处：《化工新型材料》2008年第1期28-30,共3页New Chemical Materials

摘　　要：以3/4-氯代邻苯二甲酸酐为原料,镍络合物为催化体系,通过脱卤偶联法制备2,3,3’,4’-联苯四酸二酐(a-BPDA),并以其为单体通过两步法合成了联苯型聚酰亚胺(a-BPDA-PI)。采用核磁共振氢谱(1H-NMR)、红外光谱(IR)以及元素分析等对a-BPDA单体的结构进行表征;通过动态力学分析(DMA),热失重分析(TG)对a-BPDA-PI进行力学性能及热性能测试。结果表明:以Ni络合物作为催化体系的条件下,通过脱卤偶联法可以制得a-BPDA,用该单体制备的a-BPDA-PI具有良好的力学性能,其玻璃化转变温度(Tg)约为326℃,而失重5%的温度为550℃。The a-BPDA monomer was prepared though dehalogeno-coupled method, using 3/4-chlorophthalic anhydride as raw material, nickel complex as catalyst. The biphenyl Polyimide （a-BPDA-PI） was also synthesized by two-step method. The structure of a-BPDA was characterized by use of ^1H-NMR.IR and elemental analysis. Through dynamic mechanical analysis （DMA） and thermal gravlmetric analysis （TG）, mechanical property and thermal performance of a-BPDA-PI were tested. The experimental results indicated that under the condition of nickel complex as system, a-BPDA can be obtained by dehalogeno-coupled method, a-BPDA-PI prepared from this monomer had good mechnical property, the glass transition temperature （Tg） was about 326℃, the temperature of 5% thermal weight loss was 550℃.

关 键 词：2 3 3’ 4'-联苯四酸二酐 脱卤偶联 聚酰亚胺 合成 表征 

分 类 号：TQ245[化学工程—有机化工] TQ323.7