An efficient strategy triggered crosslinking of polyethylene and its application in degassing‐free ultrahigh voltage power cables

Polyethylene has excellent electrical insulation, but its low thermal stability and breakdown strength limit its application in the field of high‐voltage (HV) and ultrahigh voltage (UHV) power cables. In this work, we have developed a new organic peroxide, 2,5‐dimethyl‐2,5‐di(tert‐butylperoxy) hexan...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2023-05, Vol.140 (20), p.n/a
Main Authors: Sun, Wu‐Ji, Liu, Xiong‐Jun, Yuan, Li‐Juan, Xiao, Han, Lu, Jian‐Mei
Format: Article
Language:English
Subjects:
Breakdown
Cross-linked polyethylene
crosslinked polyethylene
Crosslinking
Degassing
degassing‐free
Electric cables
Electric potential
Electrical insulation
finite element analysis
Hexanes
High voltages
Materials science
Polymers
Power cables
Thermal stability
ultrahigh voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Polyethylene has excellent electrical insulation, but its low thermal stability and breakdown strength limit its application in the field of high‐voltage (HV) and ultrahigh voltage (UHV) power cables. In this work, we have developed a new organic peroxide, 2,5‐dimethyl‐2,5‐di(tert‐butylperoxy) hexane (Bi25), which can efficiently trigger the crosslinking of polyethylene (Bi25‐XLPE). Bi25‐XLPE does not produce gas byproducts and has a longer scorching time. All performance of Bi25‐XLPE sheets fulfill the standard of the 500 kV power cable insulation due to the void‐free nature, higher crosslinking density and crystallinity. In addition, one 500 kV power cable model was constructed by COMSOL, which confirmed the breakdown strength (up to 61.66 kV/mm) and stability of Bi25‐XLPE.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.53844