PMID- 36426100
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20221126
IS  - 2296-2646 (Print)
IS  - 2296-2646 (Electronic)
IS  - 2296-2646 (Linking)
VI  - 10
DP  - 2022
TI  - Aging phenomena in non-crosslinked polyolefin blend cable insulation material: 
      Electrical treeing and thermal aging.
PG  - 903986
LID - 10.3389/fchem.2022.903986 [doi]
LID - 903986
AB  - Non-crosslinked polyolefin blends have become a favorable alternative material to 
      crosslinked polyethylene (XLPE) cable insulation owing to their low power 
      consumption in the production process and good recyclability at the end of 
      service life. Although studies on non-crosslinked materials have achieved 
      significant results, the electrical and thermal aging properties of these 
      materials undeniably need extensive research attention and systematic 
      exploration. Aging performance is directly related to the lifetime and 
      reliability of cables. In this study, the electrical treeing and thermal aging 
      phenomena of 70 wt.% linear low-density polyethylene (LLDPE) and 30 wt.% 
      high-density polyethylene (HDPE) blends (abbreviated as 70L-30H) were studied and 
      compared with those of XLPE by investigating the microstructural feature, 
      electrical treeing behavior, and mechanical performance during thermal aging. 
      Electrical treeing tests show that 70L-30H blends exhibited smaller treeing 
      dimensions and lower electrical tree growth rates than those of XLPE. Thermal 
      aging tests exhibit that the mechanical property degradation of 70L-30H blends is 
      less than that of XLPE under the same aging time. Through differential scanning 
      calorimetry analysis and microstructure observation, the 70L-30H blend shows 
      higher melting temperature, thicker lamellae, and higher crystallinity with a 
      uniform and fine spherulite structure, which are responsible for good anti-aging 
      performance. This study indicates that the blends exhibit better electrical and 
      thermal aging resistance than XLPE, which provides a performance guarantee for 
      its further application in the non-crosslinked cable system.
CI  - Copyright (c) 2022 Lunzhi, Jinghui, Lisheng, Kai and Xiaohan.
FAU - Lunzhi, Li
AU  - Lunzhi L
AD  - School of Electronic and Control Engineering, Chang'an University, Xi'an, China.
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an, China.
FAU - Jinghui, Gao
AU  - Jinghui G
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an, China.
FAU - Lisheng, Zhong
AU  - Lisheng Z
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an, China.
FAU - Kai, Zhang
AU  - Kai Z
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an, China.
FAU - Xiaohan, Zhao
AU  - Xiaohan Z
AD  - School of Electronic and Control Engineering, Chang'an University, Xi'an, China.
LA  - eng
PT  - Journal Article
DEP - 20221108
PL  - Switzerland
TA  - Front Chem
JT  - Frontiers in chemistry
JID - 101627988
PMC - PMC9679882
OTO - NOTNLM
OT  - cable insulation
OT  - electrical treeing
OT  - non-crosslinked
OT  - polyolefin blend
OT  - thermal aging
COIS- The authors declare that the research was conducted in the absence of any 
      commercial or financial relationships that could be construed as a potential 
      conflict of interest.
EDAT- 2022/11/26 06:00
MHDA- 2022/11/26 06:01
PMCR- 2022/01/01
CRDT- 2022/11/25 02:58
PHST- 2022/03/25 00:00 [received]
PHST- 2022/10/21 00:00 [accepted]
PHST- 2022/11/25 02:58 [entrez]
PHST- 2022/11/26 06:00 [pubmed]
PHST- 2022/11/26 06:01 [medline]
PHST- 2022/01/01 00:00 [pmc-release]
AID - 903986 [pii]
AID - 10.3389/fchem.2022.903986 [doi]
PST - epublish
SO  - Front Chem. 2022 Nov 8;10:903986. doi: 10.3389/fchem.2022.903986. eCollection 
      2022.