Study on Dielectric Behaviors of PMMA during Thermal Aging

Author

Hu, Bo ; Zhong, Lisheng ; Ma, Sude ; Wang, Pengguo ; Xu, Chuanxiang

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ.

fYear

2006

fDate

38869

Firstpage

767

Lastpage

769

Abstract

During the accelerated thermal aging at various temperature of pure polymethyl methacrylate (PMMA) which was applied as the core material of polymer optical fiber (POP), it was found that the relative permittivity decreased at first and then increased with the aging time increasing. For explaining it, a hypothesis of unification of dipole depolarization and dipole repolarization was proposed. On the basis of relative experimental analysis of infrared spectrogram (IR), refractive index and weight loss rate, both degree of depolarization and degree of repolarization were defined to describe the novel dielectric phenomena quantificationally

Keywords

ageing; dielectric polarisation; infrared spectra; permittivity; polymers; refractive index; PMMA; dielectric behaviors; dielectric phenomena; dipole depolarization; dipole repolarization; infrared spectrogram; polymer optical fiber; pure polymethyl methacrylate; refractive index; relative permittivity; thermal aging; weight loss rate; Accelerated aging; Dielectric losses; Dielectric materials; Infrared spectra; Optical fibers; Optical materials; Optical polymers; Permittivity; Spectrogram; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and applications of Dielectric Materials, 2006. 8th International Conference on

Conference_Location

Bali

Print_ISBN

1-4244-0189-5

Electronic_ISBN

1-4244-0190-9

Type

conf

DOI

10.1109/ICPADM.2006.284291

Filename

4062780