Improvement on Partial Discharge Resistance of Epoxy/Al2O3 Nanocomposites by Irradiation With 7.5 MeV Electron Beam | Zendy

Yu Gao | Zendy; Fang Liu | Zendy; Jilong Wang | Zendy; Xiaofang Wang | Zendy; Boxue Du | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Improvement on Partial Discharge Resistance of Epoxy/Al₂O₃ Nanocomposites by Irradiation With 7.5 MeV Electron Beam

Author(s) -

Yu Gao,

Fang Liu,

Jilong Wang,

Xiaofang Wang,

Boxue Du

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2800100

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

Epoxy resin used as insulating material in electrical and electronic devices is often subjected to a great risk of deterioration induced by partial discharge (PD). The resistance to PD becomes a key factor that influences the lifetime of the epoxy resin. Nano-sized inorganic filler doping has been reported to have a positive effect on improving the PD resistance by forming epoxy based nanocomposites with proper type and content of nano-fillers. In this work, attempts have been made to further improve the PD resistance of epoxy nanocomposites through high energy irradiation method. The epoxy/Al₂O₃ nanocomposites have been prepared with the filler content of 4 wt%. The neat epoxy and the nanocomposites were both irradiated by a 7.5 MeV electron beam with the total dose of 500 kGy. PD erosion of the material was introduced by means of needle-to-plate electrode system, and the PD resistance was estimated through the measurement of maximum erosion depth occurring on the sample surface. Frequency dependent relative permittivity, scanning electron microscopy, differential scanning calorimetry, and fourier transform infrared spectrum have been employed to assist in the analysis of radiation induced variation in sample's resistance to PD. Obtained results indicated that after irradiated by the electron beam with 500 kGy, the samples exhibited remarkable enhancement in PD resistance compared with the un-irradiated samples. It suggests that the PD resistance of the nanocomposites is dependent upon the molecular structure of the base polymer, which could be modified by the irradiation induced crosslinking reaction.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research