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Min Y, Yu J, Xu P, Li P, Luo S, Chu B, Yu S. Polyimide Films Impregnated with Epoxy Resin Demonstrating Superior Self-Healing Properties for Thermally Stable Energy Storage Capacitors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:51265-51274. [PMID: 36326237 DOI: 10.1021/acsami.2c13379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Metallized polymer films (MPFs) with superior self-healing properties are extremely attractive for application in energy storage capacitors. Self-healing behaviors allow MPFs to keep insulating between the local electrical breakdown region and the electrode, thereby reserving long-term operational viability of the capacitors. Polyimide (PI) is a type of well-developed polymer material with excellent mechanical and thermal stabilities, but it is deficient in intrinsic self-healing capabilities. This work reports a facile surface engineering strategy to endow metalized PI films with self-healing capabilities. By simple immersion of bare PI films in the solution of epoxy resin (ER) accompanied by curing of ER, PI films impregnated with ER (P-E films) not only show enhanced dielectric characteristics but also obtain excellent self-healing abilities upon multiple cycles of electrical breakdowns, even at a high temperature. For example, in comparison to bare PI films, PI films impregnated in ER solution with a solid content of 1 wt % (P-1%E) display improved initial Weibull breakdown strength (αb1 of 353.0 versus 310.9 kV/mm), maximum discharging energy density (Ud of 2.1836 versus 0.8254 J/cm3), and charging/discharging efficiency (η of 95.72 versus 55.19%) at 150 °C. After 5 breakdown cycles, P-1%E films could maintain a much higher breakdown strength (αb5 of 338.1 versus 21.3 kV/mm). When subjected to a constant electrical strength of 350 kV/mm at 150 °C, P-1%E films show merely <6% decline in both Ud and η values after 5 breakdown cycles. On the contrary, bare PI films would undergo dramatic performance decay after 1 or 2 breakdowns under similar conditions. In view of their outstanding self-healing properties at a high temperature, P-E films can serve as a promising candidate to fabricate thermally stable MPF capacitors for long-term operation.
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Affiliation(s)
- Yufeng Min
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
- Institute of Nano Science and Technology, University of Science and Technology of China, Suzhou, Jiangsu 215127, People's Republic of China
- University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Junyi Yu
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Pengpeng Xu
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
- School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi 330031, People's Republic of China
| | - Peng Li
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
| | - Suibin Luo
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
| | - Baojin Chu
- University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Shuhui Yu
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518103, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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The microstructure-tensile property relationship of polyethylene resin for biaxially stretched film. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02886-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kanai T, Okuyama Y, Takashige M. Dynamics and structure development for biaxial stretching polyamide 6 films. ADVANCES IN POLYMER TECHNOLOGY 2018. [DOI: 10.1002/adv.21961] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Yoshimune Okuyama
- Graduate School of Natural Science & Technology; Kanazawa University; Kanazawa Japan
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Meng LP, Chen XW, Lin YF, Li LB. Improving the softness of BOPP films: From laboratory investigation to industrial processing. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-017-1965-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chapleau N, Huneault MA, Li H. Biaxial Orientation of Polylactide/Thermoplastic Starch Blends. INT POLYM PROC 2013. [DOI: 10.3139/217.2070] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
The biaxial stretchability and film properties of polylactide/thermoplastic starch blends were investigated. Polylactide (PLA) and thermoplastic starch (TPS) were blended in various proportions. Blends containing 27, 42 and 60 wt.% TPS were prepared via a twin-screw extrusion process. Interfacial modification was performed by grafting the PLA with maleic anhydride. These blends were subsequently cast into sheets and biaxially drawn using a laboratory biaxial stretcher. The morphology of extruded strands and cast sheets was investigated using scanning electron microscopy. The compatibilized blends exhibited a much finer morphology as well as preferential minor phase size orientation along the machine direction. The addition of starch did not affect significantly the biaxial stretchability of the pure PLA. Even at high starch content (60 wt.%), the biaxial draw ratio at which the sample breaks is very similar to that of the pure PLA. At higher temperatures, all blends could be stretched at significantly much higher biaxial draw ratio and very thin films could be obtained. The starch content and processing variables affected the tensile properties.
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Affiliation(s)
- N. Chapleau
- Industrial Materials Institute, National Research Council of Canada, Boucherville, QC, Canada
| | - M. A. Huneault
- Industrial Materials Institute, National Research Council of Canada, Boucherville, QC, Canada
| | - H. Li
- Industrial Materials Institute, National Research Council of Canada, Boucherville, QC, Canada
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Tamura S, Kuramoto I, Kanai T. The effect of molecular structure of polypropylene on stretchability for biaxially oriented film. POLYM ENG SCI 2012. [DOI: 10.1002/pen.22180] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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