Excellent stability and repeatability of temperature self-regulating HDPE/PVDF/CNF composites at high temperature via locally anchored conductive "bridges".
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| Title: | Excellent stability and repeatability of temperature self-regulating HDPE/PVDF/CNF composites at high temperature via locally anchored conductive "bridges". |
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| Authors: | Fu, Shuo1 (AUTHOR), Luo, Rui1 (AUTHOR), Wang, Ziyang1 (AUTHOR), Ke, Kai1 (AUTHOR), Zhang, Kai1 (AUTHOR), Liu, Zhengying1 (AUTHOR) liuzhying@scu.edu.cn, Chen, Jun1 (AUTHOR) j_chen@scu.edu.cn, Yang, Wei1,2 (AUTHOR) |
| Source: | Composites Science & Technology. Aug2025, Vol. 269, pN.PAG-N.PAG. 1p. |
| Subjects: | Conducting polymer composites, High density polyethylene, High temperatures, Polymer networks, Melting points |
| Abstract: | Self-regulating heaters can be fabricated by conductive polymer composites (CPCs) with positive temperature coefficient (PTC) effect. However, the melting of polymer matrix and migration of conductive fillers result in poor temperature stability and repeatability of composites at high temperatures (>100 °C) when the temperature of CPCs is close to the melting point of the matrix due to Joule heating effect, which significantly limits the application of CPCs as high temperature heaters. Herein, polyvinylidene fluoride (PVDF) was blended with high-density polyethylene (HDPE), and carbon nanofibers (CNF) were used as conductive fillers to fabricate PTC composites with an "island-bridge" structure conductive network. At high temperatures, PTC behaviors appeared due to the partial breakdown of the conductive network induced by the melting of HDPE/CNF phase ("islands"), while the migration of CNFs was prevented because the CNF "bridges" were locally anchored by the PVDF phase. The resulted HDPE/PVDF/CNF composite demonstrated stable self-heating behavior at 110 °C under a 35 V voltage and maintained consistent performance during multiple heating-cooling cycles. Thus, this work presents a novel approach for achieving stable, reliable, and repeatable high-temperature self-regulating heating devices. [Display omitted] [ABSTRACT FROM AUTHOR] |
| Copyright of Composites Science & Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 185833738 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Excellent stability and repeatability of temperature self-regulating HDPE/PVDF/CNF composites at high temperature via locally anchored conductive "bridges". – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fu%2C+Shuo%22">Fu, Shuo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Rui%22">Luo, Rui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Ziyang%22">Wang, Ziyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ke%2C+Kai%22">Ke, Kai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Kai%22">Zhang, Kai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Zhengying%22">Liu, Zhengying</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuzhying@scu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Jun%22">Chen, Jun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> j_chen@scu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Wei%22">Yang, Wei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Composites+Science+%26+Technology%22">Composites Science & Technology</searchLink>. Aug2025, Vol. 269, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Conducting+polymer+composites%22">Conducting polymer composites</searchLink><br /><searchLink fieldCode="DE" term="%22High+density+polyethylene%22">High density polyethylene</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+networks%22">Polymer networks</searchLink><br /><searchLink fieldCode="DE" term="%22Melting+points%22">Melting points</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Self-regulating heaters can be fabricated by conductive polymer composites (CPCs) with positive temperature coefficient (PTC) effect. However, the melting of polymer matrix and migration of conductive fillers result in poor temperature stability and repeatability of composites at high temperatures (>100 °C) when the temperature of CPCs is close to the melting point of the matrix due to Joule heating effect, which significantly limits the application of CPCs as high temperature heaters. Herein, polyvinylidene fluoride (PVDF) was blended with high-density polyethylene (HDPE), and carbon nanofibers (CNF) were used as conductive fillers to fabricate PTC composites with an "island-bridge" structure conductive network. At high temperatures, PTC behaviors appeared due to the partial breakdown of the conductive network induced by the melting of HDPE/CNF phase ("islands"), while the migration of CNFs was prevented because the CNF "bridges" were locally anchored by the PVDF phase. The resulted HDPE/PVDF/CNF composite demonstrated stable self-heating behavior at 110 °C under a 35 V voltage and maintained consistent performance during multiple heating-cooling cycles. Thus, this work presents a novel approach for achieving stable, reliable, and repeatable high-temperature self-regulating heating devices. [Display omitted] [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Composites Science & Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.compscitech.2025.111239 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Conducting polymer composites Type: general – SubjectFull: High density polyethylene Type: general – SubjectFull: High temperatures Type: general – SubjectFull: Polymer networks Type: general – SubjectFull: Melting points Type: general Titles: – TitleFull: Excellent stability and repeatability of temperature self-regulating HDPE/PVDF/CNF composites at high temperature via locally anchored conductive "bridges". Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fu, Shuo – PersonEntity: Name: NameFull: Luo, Rui – PersonEntity: Name: NameFull: Wang, Ziyang – PersonEntity: Name: NameFull: Ke, Kai – PersonEntity: Name: NameFull: Zhang, Kai – PersonEntity: Name: NameFull: Liu, Zhengying – PersonEntity: Name: NameFull: Chen, Jun – PersonEntity: Name: NameFull: Yang, Wei IsPartOfRelationships: – BibEntity: Dates: – D: 18 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 02663538 Numbering: – Type: volume Value: 269 Titles: – TitleFull: Composites Science & Technology Type: main |
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