Phosphorus containing nadicimide oligomers: Synthesis and characterisation

被引：0
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作者：
Alam, S
Jayakumari, VG
Kandpal, LD
Varma, IK
机构：
来源：
INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES | 1996年 / 3卷 / 04期
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The paper describes the synthesis and characterisation of several nadicimide oligomers derived from tris [3-(4-aminobenzamido) phenyl] phosphine oxide (TABP), pyromellitic dianhydride (PMDA)/ 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride (BTDA). ,Structural characterisation of the resins has been done by elemental analysis, IR and H-1 NMR spectroscopy. Curing behaviour of these oligomers depends on the structure. Exothermic transitions due to curing have been observed in the temperature range of 250 +/- 20 to 295 +/- 25 degrees C. Isothermal curing of the resins has been done at 340 degrees C for 1h in air atmosphere. The cured resins are stable up to 300 degrees C and decompose in a single step above this temperature.
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页码：158 / 162
页数：5
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