PMID- 30304869
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200930
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 11
IP  - 10
DP  - 2018 Oct 9
TI  - Temperature Dependence of Mechanical, Electrical Properties and Crystal Structure 
      of Polyethylene Blends for Cable Insulation.
LID - 10.3390/ma11101922 [doi]
LID - 1922
AB  - There is a long-standing puzzle concerning whether polyethylene blends are a 
      suitable substitution for cable-insulation-used crosslinking polyethylene (XLPE) 
      especially at elevated temperatures. In this paper, we investigate temperature 
      dependence of mechanical, electrical properties of blends with 70 wt % linear low 
      density polyethylene (LLDPE) and 30 wt % high density polyethylene (HDPE) 
      (abbreviated as 70 L-30 H). Our results show that the dielectric loss of 70 L-30 
      H is about an order of magnitude lower than XLPE, and the AC breakdown strength 
      is 22% higher than XLPE at 90  degrees C. Moreover, the dynamic mechanical thermal 
      analysis (DMA) measurement and hot set tests suggest that the blends shows 
      optimal mechanical properties especially at high temperature with considerable 
      temperature stability. Further scanning electron microscope (SEM) observation and 
      X-ray diffraction (XRD) analysis uncover the reason for the excellent high 
      temperature performance and temperature stability, which can be ascribed to the 
      uniform fine-spherulite structure in 70 L-30 H blends with high crystallinity 
      sustaining at high temperature. Therefore, our findings may enable the potential 
      application of the blends as cable insulation material with higher 
      thermal-endurance ability.
FAU - Li, Lunzhi
AU  - Li L
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an 710049, China. demoniacpea@stu.xjtu.edu.cn.
FAU - Zhong, Lisheng
AU  - Zhong L
AUID- ORCID: 0000-0002-5991-4363
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an 710049, China. lszhong@mail.xjtu.edu.cn.
FAU - Zhang, Kai
AU  - Zhang K
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an 710049, China. zhangkai.925@stu.xjtu.edu.cn.
FAU - Gao, Jinghui
AU  - Gao J
AUID- ORCID: 0000-0002-7698-2229
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an 710049, China. gaojinghui@mail.xjtu.edu.cn.
FAU - Xu, Man
AU  - Xu M
AD  - State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong 
      University, Xi'an 710049, China. xumman@mail.xjtu.edu.cn.
LA  - eng
GR  - 2016YFB0900702/National Key R&D Program of China/
GR  - SGRIDGKJ [2016]1151/Science and Technology Project of SGCC/
PT  - Journal Article
DEP - 20181009
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC6213639
OTO - NOTNLM
OT  - cable insulation
OT  - crystal structure
OT  - electrical properties
OT  - mechanical properties
OT  - polyethylene blends
COIS- The authors declare no conflict of interest.
EDAT- 2018/10/12 06:00
MHDA- 2018/10/12 06:01
PMCR- 2018/10/09
CRDT- 2018/10/12 06:00
PHST- 2018/09/15 00:00 [received]
PHST- 2018/09/28 00:00 [revised]
PHST- 2018/10/03 00:00 [accepted]
PHST- 2018/10/12 06:00 [entrez]
PHST- 2018/10/12 06:00 [pubmed]
PHST- 2018/10/12 06:01 [medline]
PHST- 2018/10/09 00:00 [pmc-release]
AID - ma11101922 [pii]
AID - materials-11-01922 [pii]
AID - 10.3390/ma11101922 [doi]
PST - epublish
SO  - Materials (Basel). 2018 Oct 9;11(10):1922. doi: 10.3390/ma11101922.