x波段有效微波吸收聚合物纳米复合材料：石墨烯在聚氨酯/聚丙烯多层结构中的作用

IF 4.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-08-01 Epub Date: 2025-03-04 DOI:10.1016/j.vacuum.2025.114212

Mir Sadat Ali , B.V.S.R.N. Santhosi , Ramu Garugubilli , Javed Syed

{"title":"x波段有效微波吸收聚合物纳米复合材料：石墨烯在聚氨酯/聚丙烯多层结构中的作用","authors":"Mir Sadat Ali , B.V.S.R.N. Santhosi , Ramu Garugubilli , Javed Syed","doi":"10.1016/j.vacuum.2025.114212","DOIUrl":null,"url":null,"abstract":"<div><div>The study explores the synthesis of polyurethane (PU) and polypropylene (PP) composites, focusing on the effective dispersion of graphene within the polymer matrix. Utilising the solution blending method, the research highlights how processing parameters affect composite properties and their potential applications. Graphene enhances interactions and crystallisation in PP composites while introducing disorder in PU composites, improving compatibility and interlayer spacing. Graphene improves composite performance, as seen by FESEM imaging and TGA findings, which show increased thermal stability. Notably, adding graphene nanoplatelets enhances the dielectric properties of PU/graphene/epoxy and PP/graphene/epoxy nanocomposites, particularly at a 2.5 % weight fraction, optimising charge carrier mobility and interfacial polarisation. The study concludes that a 4-layered polymer/graphene/epoxy composite configuration is optimal for X-band frequency applications, achieving a reflection loss of −20.0263 dB and 99.99 % absorption of electromagnetic radiation, making it suitable for stealth technology due to its lightweight and thermally stable characteristics.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"238 ","pages":"Article 114212"},"PeriodicalIF":4.3000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effective microwave absorbing polymer nanocomposites in X-band: The role of graphene in polyurethane/polypropylene multilayered structures\",\"authors\":\"Mir Sadat Ali , B.V.S.R.N. Santhosi , Ramu Garugubilli , Javed Syed\",\"doi\":\"10.1016/j.vacuum.2025.114212\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The study explores the synthesis of polyurethane (PU) and polypropylene (PP) composites, focusing on the effective dispersion of graphene within the polymer matrix. Utilising the solution blending method, the research highlights how processing parameters affect composite properties and their potential applications. Graphene enhances interactions and crystallisation in PP composites while introducing disorder in PU composites, improving compatibility and interlayer spacing. Graphene improves composite performance, as seen by FESEM imaging and TGA findings, which show increased thermal stability. Notably, adding graphene nanoplatelets enhances the dielectric properties of PU/graphene/epoxy and PP/graphene/epoxy nanocomposites, particularly at a 2.5 % weight fraction, optimising charge carrier mobility and interfacial polarisation. The study concludes that a 4-layered polymer/graphene/epoxy composite configuration is optimal for X-band frequency applications, achieving a reflection loss of −20.0263 dB and 99.99 % absorption of electromagnetic radiation, making it suitable for stealth technology due to its lightweight and thermally stable characteristics.</div></div>\",\"PeriodicalId\":23559,\"journal\":{\"name\":\"Vacuum\",\"volume\":\"238 \",\"pages\":\"Article 114212\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2025-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Vacuum\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0042207X25002027\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/3/4 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X25002027","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/4 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

该研究探索了聚氨酯（PU）和聚丙烯（PP）复合材料的合成，重点是石墨烯在聚合物基体中的有效分散。利用溶液共混方法，研究了工艺参数如何影响复合材料的性能及其潜在的应用。石墨烯增强了PP复合材料的相互作用和结晶性，同时在PU复合材料中引入了无序性，改善了相容性和层间间距。从FESEM成像和TGA结果可以看出，石墨烯改善了复合材料的性能，增加了热稳定性。值得注意的是，添加石墨烯纳米片增强了PU/石墨烯/环氧和PP/石墨烯/环氧纳米复合材料的介电性能，特别是在2.5%的重量分数下，优化了载流子迁移率和界面极化。该研究得出结论，4层聚合物/石墨烯/环氧树脂复合结构是x波段频率应用的最佳选择，其反射损耗为- 20.0263 dB，电磁辐射吸收率为99.99%，由于其重量轻、热稳定的特性，适合隐身技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Effective microwave absorbing polymer nanocomposites in X-band: The role of graphene in polyurethane/polypropylene multilayered structures

The study explores the synthesis of polyurethane (PU) and polypropylene (PP) composites, focusing on the effective dispersion of graphene within the polymer matrix. Utilising the solution blending method, the research highlights how processing parameters affect composite properties and their potential applications. Graphene enhances interactions and crystallisation in PP composites while introducing disorder in PU composites, improving compatibility and interlayer spacing. Graphene improves composite performance, as seen by FESEM imaging and TGA findings, which show increased thermal stability. Notably, adding graphene nanoplatelets enhances the dielectric properties of PU/graphene/epoxy and PP/graphene/epoxy nanocomposites, particularly at a 2.5 % weight fraction, optimising charge carrier mobility and interfacial polarisation. The study concludes that a 4-layered polymer/graphene/epoxy composite configuration is optimal for X-band frequency applications, achieving a reflection loss of −20.0263 dB and 99.99 % absorption of electromagnetic radiation, making it suitable for stealth technology due to its lightweight and thermally stable characteristics.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.