Polypropylene based thermoplastic polymers for potential recyclable HVDC cable insulation applications

Thermoplastic materials are highly desirable for power cable insulation application because of their recyclability and ease of processing. They are particularly suitable for high voltage direct current (HVDC) cable insulation because of the absence of byproducts during cable production, which may re...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2017-06, Vol.24 (3), p.1446-1456
Main Authors: Huang, Xingyi, Fan, Yanyan, Zhang, Jun, Jiang, Pingkai
Format: Article
Language:English
Subjects:
Block copolymers
Breakdown
breakdown strength
Byproducts
Charge distribution
copolymer
Crystal structure
Crystallization
Degassing
Direct current
Electric charge
Electric potential
Electrical properties
Ethylene
Insulation
Isotacticity
Mechanical properties
Melting
Plastics
Polymers
Polypropylene
Power cable insulation
Power cables
Propylene
Recyclability
Space charge
spherulite
Temperature
Temperature measurement
Thermoplastic insulation
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Summary:Thermoplastic materials are highly desirable for power cable insulation application because of their recyclability and ease of processing. They are particularly suitable for high voltage direct current (HVDC) cable insulation because of the absence of byproducts during cable production, which may result in the reduction of undesirable space charge accumulation and the degassing cost. Polypropylene based polymers may have the potential for recyclable thermoplastic cable insulation application because of their high melting temperatures and adjustable mechanical and electrical properties. This work aimed at evaluating the potential of isotactic polypropylenes, propylene-ethylene block copolymers and random copolymers for thermoplastic cable insulation application. We investigated the melting and crystallization behavior, crystal structure, supramolecular structure, mechanical properties, space charge distribution and DC breakdown strength of six different polymers (two isotactic polypropylenes, two block copolymers and two random copolymers). A comprehensive analysis of these parameters indicates that the propylene-ethylene binary random copolymers are more potentially suitable for thermoplastic cable insulation application.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2017.006230