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<p>Glass foam composites have been fabricated and characterized for electromagnetic wave absorption application. The cullet based on recycling glass waste was used as a raw material for the manufacture of foams. Carbonic fillers of rubber powder and carbon fibers were utilized with different amounts to test the absorption efficiency of electromagnetic waves. The composites show a relatively homogeneous porous structure. The density of the produced composites varies between 213 and 347&#xa0;kg/m3. Observation by scanning electron microscope shows significant degradation of rubber powders unlike carbon fibers. Gravimetric thermal analysis reveals a mass loss of 62.06% of rubber powders and 1.71% of carbon fibers during heat treatment. The dielectric characterization results exhibit an evolution of the dielectric properties (permittivity and dielectric losses) as a function of the carbon charges. Glass foam composites filled with carbon fibers have a permittivity (ε’) between 1.78 and 3.72 and high dielectric losses (tanδ) between 0.32 and 0.46 at 10&#xa0;GHz. The dielectric properties of glass foam filled with rubber powders are marginally lower compared to those loaded with carbon fibers. The reflection loss measurements indicate significant absorption performance for the samples. The foam containing 6% carbon fibers recorded a reflection loss of − 35.97&#xa0;dB at 11.44&#xa0;GHz, accompanied by a broad absorption bandwidth of 2.48&#xa0;GHz, indicating absorption greater than 90%.</p>

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Study of a Glass Foam Composite Loaded with Carbon Materials for Electromagnetic Wave Absorption Applications

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • Younes Lamri,
  • Ratiba Benzerga,
  • Laurent Le Gendre,
  • Fayrouz Benhaoua,
  • Azzedine Ayadi

摘要

Glass foam composites have been fabricated and characterized for electromagnetic wave absorption application. The cullet based on recycling glass waste was used as a raw material for the manufacture of foams. Carbonic fillers of rubber powder and carbon fibers were utilized with different amounts to test the absorption efficiency of electromagnetic waves. The composites show a relatively homogeneous porous structure. The density of the produced composites varies between 213 and 347 kg/m3. Observation by scanning electron microscope shows significant degradation of rubber powders unlike carbon fibers. Gravimetric thermal analysis reveals a mass loss of 62.06% of rubber powders and 1.71% of carbon fibers during heat treatment. The dielectric characterization results exhibit an evolution of the dielectric properties (permittivity and dielectric losses) as a function of the carbon charges. Glass foam composites filled with carbon fibers have a permittivity (ε’) between 1.78 and 3.72 and high dielectric losses (tanδ) between 0.32 and 0.46 at 10 GHz. The dielectric properties of glass foam filled with rubber powders are marginally lower compared to those loaded with carbon fibers. The reflection loss measurements indicate significant absorption performance for the samples. The foam containing 6% carbon fibers recorded a reflection loss of − 35.97 dB at 11.44 GHz, accompanied by a broad absorption bandwidth of 2.48 GHz, indicating absorption greater than 90%.