Evaluation of polypropylene/polyolefin elastomer blends for potential recyclable HVDC cable insulation applications

Zhou, Yao; He, Jinliang; Hu, Jun; Huang, Xingyi; Jiang, Pingkai

doi:10.1109/tdei.2015.7076762

Cited by 181 publications

(86 citation statements)

References 25 publications

(18 reference statements)

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“…The blends exhibit optimized electrical and mechanical properties at equal quantities of PP and POE. Zhou et al evaluated PP/POE blend for recyclable HVDC. They found that blending PP with POE can result in enhanced mechanical flexibility, good enough thermal properties (i.e., high melting temperatures) and enhanced electrical properties (i.e., increased volume resistivity and high breakdown strength) which is promising for HVDC cable.…”

Section: The Emergence Of Thermoplastic Elastomer In Electrical Insulmentioning

confidence: 99%

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A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

Ismail

Mariatti

2018

Polymer Engineering & Sci

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Thermoplastic elastomer (TPE) has gained acceptance as third generation of polymeric materials for high voltage (HV) insulators. The interesting features showed by TPEs were found to fulfill some particular requirements for HV insulations, at least for the distribution class applications, especially at light contamination environments. Introduction of nanomaterials which widely reported to give significant improvements in the electrical, mechanical, thermal and other properties of polymer has attracted attention to the synergistic properties of combining the two complementary technologies of thermoplastic elastomers and nanocomposites. In this paper, research works on various types of TPEs having promising performance as HV insulators are thoroughly reviewed. The emergence of nanocomposites in the electrical insulation field and the important properties consideration for HV insulators as well as the processing techniques of TPE nanocomposites are also discussed. Finally, some of the past and recent developments of TPE nanocomposites focusing on the electrical insulation properties are highlighted in this article. POLYM. ENG. SCI., 58:E36–E63, 2018. © 2018 Society of Plastics Engineers

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Section: The Emergence Of Thermoplastic Elastomer In Electrical Insulmentioning

confidence: 99%

“…The by‐products during crosslinking process which reported to cause space charge formation in the bulk XLPE is also another major obstacle for the application of XLPE in HVDC cables . Recently, polypropylene (PP) based TPEs attracted many researchers attention due to their potential to replace XLPE as DC cable insulation .…”

Section: Introductionmentioning

confidence: 99%

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

Ismail

Mariatti

2018

Polymer Engineering & Sci

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“…They found that random PP copolymers are more suitable for cable insulation application. Zhou et al blended PP with POE (polyolefin) to enhance mechanical properties of PP and used the composite as HVDC cable insulation . The introduction of POE was intended to improve toughness, reduce modulus and increase the elongation of PP.…”

Section: Introductionmentioning

confidence: 99%

The influence of nano‐PS particle on structure evolution and electrical properties of PP/PS

Guo

Yang

et al. 2018

J Polym Sci B Polym Phys

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The polypropylene‐g‐polystyrene (PP‐g‐PS) copolymers with different grafting ratios are used as compatibilizers to control the size of polystyrene (PS) particles at nanometer scale in polypropylene (PP) matrix. Then the PP/PS insulating nanocomposites (containing 10 wt % PS calculated from PS and PP‐g‐PS) are manufactured. With the increase in grafting ratio of PP‐g‐PS, the size of PS particle is reduced and the interfacial adhesion is enhanced. Meanwhile, the dielectric properties, DC breakdown strength and volume resistivity are increased with the decreasing of PS particle size. The spherulite size of PP is decreased and the boundary between crystals and amorphous regions is blurred or even disappears due to the presence of PS nanoparticles. This evolution of PP structure is attributed to the serious entanglements of PP and PS molecular chains. Finally, the correlation between morphological structure and electrical properties is ultimately established based on the in‐depth understanding of the molecular chain movement, crystal structure, and phase morphology. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 706–717

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“…Recently, to enhance the toughness of PP, a new family of metallocene‐catalysed elastomers such as propylene − ethylene copolymers (PECs) and ethylene − octene copolymers (EOCs) has attracted great attention due to their narrow molecular mass distribution, making them easier to handle and allowing faster mixing. It has been found that PP/PEC and PP/EOC blends as cable insulation having higher operating temperature than LDPE and HDPE can provide very good heat deformation performance …”

Section: Introductionmentioning

confidence: 99%

Large improvement in trap level and space charge distribution of polypropylene by enhancing the crystalline − amorphous interface effect in blends

Dang

et al. 2016

Polym. Int.

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The accumulation of space charge in high voltage direct current cable will bring the insulation to failure; the addition of nanoparticles can markedly improve the space charge distribution characteristics inside the cable insulation, but particle agglomeration and cavitation lead to difficulty in controlling the properties of nanocomposites. In this paper, polypropylene (PP)/propylene-ethylene copolymer (PEC) and PP/ethylene-octene copolymer (EOC) blends were prepared by mechanical blending in order to improve both mechanical properties and space charge distribution. Dynamic mechanical thermal analysis shows that both blends have excellent mechanical properties for recyclable power cable. Pulsed electro-acoustic and thermally stimulated depolarization current tests illustrate that PP/EOC blends significantly decrease space charge accumulation and remarkably increase the trap density in the bulk compared with PP and PP/PEC blends. The increase of the trap density in PP/EOC blends can be explained as the result of the shallow traps introduced by the crystalline − amorphous interface existing in the boundaries of spherulites. The shallow traps can act as hopping sites to improve the transportation of space charges.

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Evaluation of polypropylene/polyolefin elastomer blends for potential recyclable HVDC cable insulation applications

Cited by 181 publications

References 25 publications

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

A review of thermoplastic elastomeric nanocomposites for high voltage insulation applications

The influence of nano‐PS particle on structure evolution and electrical properties of PP/PS

Large improvement in trap level and space charge distribution of polypropylene by enhancing the crystalline − amorphous interface effect in blends

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