Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films
The layer number effect on electric breakdown strength (<i>E<sub>BD</sub></i>) of multi-layer polymer films is investigated using 10-μm polypropylene (PP) films under a dc condition. The layer number, <i>n</i>, of the films during the test is as large as 120. It i...
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MDPI AG
2022-04-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/9/1653 |
| _version_ | 1797503275150344192 |
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| author | Liang Zhao Binxiong Yu Wei Shang |
| author_facet | Liang Zhao Binxiong Yu Wei Shang |
| author_sort | Liang Zhao |
| collection | DOAJ |
| description | The layer number effect on electric breakdown strength (<i>E<sub>BD</sub></i>) of multi-layer polymer films is investigated using 10-μm polypropylene (PP) films under a dc condition. The layer number, <i>n</i>, of the films during the test is as large as 120. It is observed that the relation between <i>E<sub>BD</sub></i> and <i>n</i> conforms to a minus power law, i.e., <i>E<sub>BD</sub></i>(<i>n</i>) = <i>E</i><sub>1′</sub><i>n</i><sup>−<i>a</i></sup>, where the power exponent, <i>a</i>, is 0.27, <i>E</i><sub>1′</sub> is a constant. By reviewing the experimental data in references, it is found that the power law holds true for different types of polymers in different test conditions, but the value of <i>a</i> varies from 0.072 to 0.5. The variation of <i>a</i> is explained in perspective of the discontinuous structures within films and those between films. A small value of <i>a</i> means a good purity level of the film, which is due to the decrease of the size of the inter-layer defects. A large value of <i>a</i> means a poor purity level of the films, which is due to the increase of the amount of intra-layer defects. Both factors influence the value of <i>a</i>, leading to the variation of <i>a</i>. |
| first_indexed | 2024-03-10T03:48:14Z |
| format | Article |
| id | doaj.art-d4f28290a89447b4ae9d9c28ea0012ef |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T03:48:14Z |
| publishDate | 2022-04-01 |
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| record_format | Article |
| series | Polymers |
| spelling | doaj.art-d4f28290a89447b4ae9d9c28ea0012ef2023-11-23T09:04:20ZengMDPI AGPolymers2073-43602022-04-01149165310.3390/polym14091653Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer FilmsLiang Zhao0Binxiong Yu1Wei Shang2Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaScience and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaScience and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an 710024, ChinaThe layer number effect on electric breakdown strength (<i>E<sub>BD</sub></i>) of multi-layer polymer films is investigated using 10-μm polypropylene (PP) films under a dc condition. The layer number, <i>n</i>, of the films during the test is as large as 120. It is observed that the relation between <i>E<sub>BD</sub></i> and <i>n</i> conforms to a minus power law, i.e., <i>E<sub>BD</sub></i>(<i>n</i>) = <i>E</i><sub>1′</sub><i>n</i><sup>−<i>a</i></sup>, where the power exponent, <i>a</i>, is 0.27, <i>E</i><sub>1′</sub> is a constant. By reviewing the experimental data in references, it is found that the power law holds true for different types of polymers in different test conditions, but the value of <i>a</i> varies from 0.072 to 0.5. The variation of <i>a</i> is explained in perspective of the discontinuous structures within films and those between films. A small value of <i>a</i> means a good purity level of the film, which is due to the decrease of the size of the inter-layer defects. A large value of <i>a</i> means a poor purity level of the films, which is due to the increase of the amount of intra-layer defects. Both factors influence the value of <i>a</i>, leading to the variation of <i>a</i>.https://www.mdpi.com/2073-4360/14/9/1653layer number effectsolid insulation dielectricsbreakdown strengthmulti-layer films |
| spellingShingle | Liang Zhao Binxiong Yu Wei Shang Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films Polymers layer number effect solid insulation dielectrics breakdown strength multi-layer films |
| title | Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films |
| title_full | Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films |
| title_fullStr | Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films |
| title_full_unstemmed | Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films |
| title_short | Investigation into Layer Number Effect on Breakdown Strength of Multi-Layer Polymer Films |
| title_sort | investigation into layer number effect on breakdown strength of multi layer polymer films |
| topic | layer number effect solid insulation dielectrics breakdown strength multi-layer films |
| url | https://www.mdpi.com/2073-4360/14/9/1653 |
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