Title :
Effect of water absorption on dielectric properties of EPDM/Al(OH) 3 composites
Author :
Gao, Naikui ; Xie, Hengkun ; Peng, Zongmn
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equipment, Xi´´an Jiaotong Univ., China
Abstract :
This paper deals mainly with the effect of water absorption on dielectric properties of EPDM/Al(OH)3 composites. The relationship between dielectric properties and water absorption is investigated by accelerated aging. The diffusion coefficient of water in composites is computed, and the mechanism of water absorption of composites is discussed. The results show that permittivity and the loss tangent of the composites is closely related with water content and filler particle size. The filler-polymer and filler-filler interfaces are the main path of water entering the composite, which play an important role in the effect on dielectric properties
Keywords :
aluminium compounds; composite material interfaces; dielectric losses; diffusion; ethylene-propylene rubber; filled polymers; insulation testing; life testing; particle size; permittivity; sorption; water; Al(OH)3; EPDM/Al(OH)3 composites; accelerated aging; dielectric properties; diffusion coefficient; filler particle size; filler-filler interfaces; filler-polymer interfaces; loss tangent; permittivity; water absorption; Absorption; Accelerated aging; Dielectric losses; Dielectric measurements; Dielectrics and electrical insulation; Microscopy; Permittivity; Plastic insulation; Polymers; Water;
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.2000.876376
