HIGH-TEMPERATURE LAMINATING RESINS BASED ON MALEIMIDO END-CAPPED PYROMELLITIMIDE

被引:19
作者
MIKROYANNIDIS, JA [1 ]
MELISSARIS, AP [1 ]
机构
[1] UNIV PATRAS,DEPT CHEM,CHEM TECHNOL LAB,GR-26001 PATRAS,GREECE
关键词
Nuclear Magnetic Resonance - Polymers--Spectroscopic Analysis - Spectroscopy;
D O I
10.1002/app.1988.070360318
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A novel class of bismaleimides, biscitraconimides, and bisdichloromaleimides chain-extended by pyromellitimide was prepared and characterized by infrared and proton nuclear magnetic resonance spectroscopy. These polymer precursors were prepared by reacting maleic/citraconic/dichloromaleic anhydride (1 mol) with an equimolar amount of a diamine and subsequently with pyromellitic dianhydride (0.5 mol). The tetraamic acid formed was cyclodehydrated by chemical or thermal means. The curing behavior of polymer precursors was investigated by differential thermal analysis. The curing temperature of monomers fluctuated between 209 and 318°C. Dynamic thermogravimetric analysis of the cured aromatic resins showed that they were approximately stable up to 370°C both in nitrogen and air.
引用
收藏
页码:691 / 702
页数:12
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