Title :
The changes of mechanical properties of epoxy/mica insulation materials in aging process
Author :
Hao, Yanpeng ; Jia, Zhidong ; Jiang, Xiongwei ; Gao, Naikui ; Xie, Hengkun
Author_Institution :
Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ., China
Abstract :
The dynamic mechanical properties of epoxy/mica glass-fiber reinforced composites were studied at different aging stages under electrical-thermal stresses and thermal-mechanical stresses. A new method was proposed to calculate the apparent activation energy of glass transition (AAEGT) of epoxy/mica based on dynamic mechanical analysis (DMA) curves. It is suggested that dynamic mechanical parameters can be used to describe the aging characteristics of epoxy/mica
Keywords :
ageing; composite insulating materials; dynamic testing; epoxy insulation; filled polymers; glass fibre reinforced plastics; glass transition; insulation testing; mica; activation energy; aging process; dynamic mechanical analysis; dynamic mechanical properties; electrical-thermal stresses; epoxy/mica glass-fiber reinforced composites; epoxy/mica insulation materials; glass transition; mechanical properties; thermal-mechanical stresses; Aging; Composite materials; Dielectrics and electrical insulation; Glass; Materials testing; Mechanical factors; Partial discharges; Stator windings; Thermal stresses; Viscosity;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875661
