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

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

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

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

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引用次数: 0

Abstract

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.

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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.