Structural characters of biaxially stretched polypropylene films and the relevant electrical insulating properties
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Sixue Zeng
Abstract
Capacitor films from biaxially oriented polypropylene (BOPP) involve intensive external stress field, resulting in special crystallization and orientation characters. However, it still remains ambiguous on the relationship between crystallized morphology in BOPP bulk film and electric properties. In this work, two stretching modes, simultaneously biaxial stretching and sequentially biaxial stretching, were chosen to adjust film thickness, extended chain crystal content, fibrillar morphology, and orientation texture. Meanwhile, the working rules of these structural issues on electrical insulating properties were inspected. It reveals that extended chain crystals with thermal stability and isotropous fibrillated network favor to improved breakdown strength and lowered dielectric loss. These results offer good understanding on the processing-structure-property relation of polymer film dielectrics.
Funding source: Ke Wang
Award Identifier / Grant number: No. 51973139
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: Financial support from the National Natural Science Foundation of China (NSFC) by grant no. 51973139 is gratefully appreciated.
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Conflict of interest statement: The authors declare that they have no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Material Properties
- A fundamental approach to determine the impact of aramid and carbon fibers on durability and tribological performance of different polymer composites demonstrated in gear transmission process
- Structural characters of biaxially stretched polypropylene films and the relevant electrical insulating properties
- Preparation and Assembly
- The consequences of removing fluorinated compounds from rigid contact lenses
- Electrosprayed low toxicity polycaprolactone microspheres from low concentration solutions
- Engineering and Processing
- Molecular dynamics simulation of stretch-induced crystallization of star polymers as compared to their linear counterparts
- Additive manufactured parts produced by selective laser sintering technology: porosity formation mechanisms
- The efficient removal of low concentration hexavalent chromium via combining charged microporous membrane and micellar adsorption filtration
