Development of a Flexible Porous GNP-PDMS Composite: Tunable Thermal and Electrical Properties for Novel Applications

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Applied Composite Materials Pub Date : 2024-07-09 DOI:10.1007/s10443-024-10246-9

Mohamad-Anas Hejazi, Levent Trabzon

{"title":"Development of a Flexible Porous GNP-PDMS Composite: Tunable Thermal and Electrical Properties for Novel Applications","authors":"Mohamad-Anas Hejazi, Levent Trabzon","doi":"10.1007/s10443-024-10246-9","DOIUrl":null,"url":null,"abstract":"<div><p>The integration of carbon nanomaterials with flexible polymers has received intensive attention as a promising research direction in developing materials with novel properties for advanced applications. Herein, we report on the fabrication and characterization of flexible porous polydimethylsiloxane (PDMS) coated with graphene nanoplatelets (GNPs). We explore the mechanisms affecting its various properties under deformation, and propose new applications for it. The results show lightweight and excellent flexibility characteristics for the obtained GNP-PDMS composite. Measurements of its electrical resistance revealed a change in the electrical resistivity from 2.35 × 10<sup>6</sup> Ω·m to 194 Ω·m under a strain change from 10 to 80% illustrating its ability to shift behavior from an electrical insulator to a relatively low resistivity material and demonstrating the considerable potential for use as a flexible electrical switch. Moreover, the thermal conductivity of GNP-PDMS was found to be significantly enhanced (up to ∼ 110%) by changing the level of compression from 20 to 80%, proving a strain-tunable thermal performance, allowing its utilization as an insulation material of variable conductance for unique thermal management applications.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"31 5","pages":"1645 - 1661"},"PeriodicalIF":2.3000,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Composite Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10443-024-10246-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}

引用次数: 0

Abstract

The integration of carbon nanomaterials with flexible polymers has received intensive attention as a promising research direction in developing materials with novel properties for advanced applications. Herein, we report on the fabrication and characterization of flexible porous polydimethylsiloxane (PDMS) coated with graphene nanoplatelets (GNPs). We explore the mechanisms affecting its various properties under deformation, and propose new applications for it. The results show lightweight and excellent flexibility characteristics for the obtained GNP-PDMS composite. Measurements of its electrical resistance revealed a change in the electrical resistivity from 2.35 × 10⁶ Ω·m to 194 Ω·m under a strain change from 10 to 80% illustrating its ability to shift behavior from an electrical insulator to a relatively low resistivity material and demonstrating the considerable potential for use as a flexible electrical switch. Moreover, the thermal conductivity of GNP-PDMS was found to be significantly enhanced (up to ∼ 110%) by changing the level of compression from 20 to 80%, proving a strain-tunable thermal performance, allowing its utilization as an insulation material of variable conductance for unique thermal management applications.

Abstract Image

查看原文本刊更多论文

开发柔性多孔 GNP-PDMS 复合材料：用于新型应用的可调热学和电学特性

碳纳米材料与柔性聚合物的结合作为开发具有新颖特性的先进应用材料的一个有前途的研究方向受到了广泛关注。在此，我们报告了涂有石墨烯纳米片（GNPs）的柔性多孔聚二甲基硅氧烷（PDMS）的制备和表征。我们探讨了影响其变形时各种性能的机理，并提出了新的应用建议。研究结果表明，所获得的 GNP-PDMS 复合材料具有轻质、柔韧的特点。对其电阻的测量显示，在应变从 10% 到 80% 的变化过程中，电阻率从 2.35 × 106 Ω-m 变为 194 Ω-m，这说明它能够从电绝缘材料转变为电阻率相对较低的材料，并证明了其作为柔性电子开关的巨大应用潜力。此外，通过将压缩程度从 20% 变为 80%，GNP-PDMS 的热导率显著提高（高达 ∼ 110%），证明了其具有应变可调的热性能，可用作具有可变电导率的绝缘材料，用于独特的热管理应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.