New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure
We report an effective approach on improving the electrical strength and mechanical impact toughness in polyethylene blends by locating the composition on a submicroscopic supramolecular structure turning point. The designed linear low density polyethylene (LLDPE)-high density polyethylene (HDPE) bl...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5053416 |
| _version_ | 1818172713381920768 |
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| author | Lunzhi Li Lisheng Zhong Kai Zhang Jinghui Gao Man Xu Yu Wang |
| author_facet | Lunzhi Li Lisheng Zhong Kai Zhang Jinghui Gao Man Xu Yu Wang |
| author_sort | Lunzhi Li |
| collection | DOAJ |
| description | We report an effective approach on improving the electrical strength and mechanical impact toughness in polyethylene blends by locating the composition on a submicroscopic supramolecular structure turning point. The designed linear low density polyethylene (LLDPE)-high density polyethylene (HDPE) blends exhibit the enhanced electrical breakdown strength and toughness with the optimal value of E0=95.48kV/mm and G=54.67 kJ·m-2 respectively, which is around 6% and 18% higher than pure LLDPE. The scanning electron microscopic (SEM) investigation and X-ray diffraction (XRD) study show no obvious variation in mesoscopic and microscopic structure with the change of HDPE content. Further differential scanning calorimetric (DSC) study using successive self-nucleation/annealing (SSA) method reveals that the turning point with optimal performance corresponds with a peculiar supramolecular structure with a high density of tie molecules, which enhances the toughness and the electromechanical breakdown strength. Our work provides a new insight on improving electrical strength and toughness for dielectric polymers, and may aid to enhance the electric insulation performance for dielectric materials in power equipment. |
| first_indexed | 2024-12-11T19:16:59Z |
| format | Article |
| id | doaj.art-ba492e4ba7b64f06abe81a08f3efe24c |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T19:16:59Z |
| publishDate | 2018-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-ba492e4ba7b64f06abe81a08f3efe24c2022-12-22T00:53:37ZengAIP Publishing LLCAIP Advances2158-32262018-12-01812125127125127-710.1063/1.5053416106812ADVNew insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structureLunzhi Li0Lisheng Zhong1Kai Zhang2Jinghui Gao3Man Xu4Yu Wang5State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi’an 710049, ChinaWe report an effective approach on improving the electrical strength and mechanical impact toughness in polyethylene blends by locating the composition on a submicroscopic supramolecular structure turning point. The designed linear low density polyethylene (LLDPE)-high density polyethylene (HDPE) blends exhibit the enhanced electrical breakdown strength and toughness with the optimal value of E0=95.48kV/mm and G=54.67 kJ·m-2 respectively, which is around 6% and 18% higher than pure LLDPE. The scanning electron microscopic (SEM) investigation and X-ray diffraction (XRD) study show no obvious variation in mesoscopic and microscopic structure with the change of HDPE content. Further differential scanning calorimetric (DSC) study using successive self-nucleation/annealing (SSA) method reveals that the turning point with optimal performance corresponds with a peculiar supramolecular structure with a high density of tie molecules, which enhances the toughness and the electromechanical breakdown strength. Our work provides a new insight on improving electrical strength and toughness for dielectric polymers, and may aid to enhance the electric insulation performance for dielectric materials in power equipment.http://dx.doi.org/10.1063/1.5053416 |
| spellingShingle | Lunzhi Li Lisheng Zhong Kai Zhang Jinghui Gao Man Xu Yu Wang New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure AIP Advances |
| title | New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure |
| title_full | New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure |
| title_fullStr | New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure |
| title_full_unstemmed | New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure |
| title_short | New insight on improving electrical strength and toughness of polyethylene blends: Turning point of supramolecular structure |
| title_sort | new insight on improving electrical strength and toughness of polyethylene blends turning point of supramolecular structure |
| url | http://dx.doi.org/10.1063/1.5053416 |
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