Electromagnetic wave absorbing properties of carbon black-filled natural rubber latex

Salayong, Kiadtisak; Lertwiriyaprapa, Titipong; Torrungrueng, Danai; Suksai, Saharat; Pongmuksuwan, Pornlada; Kitisatorn, Wanlop

doi:10.1016/j.matpr.2021.10.425

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Three specimens were prepared and measured to eliminate the random error. Figure 1 shows the EM parameters of cement, CB, WIP and EP, which indicates that cement and EP have almost no loss capacity, while CB and WIP have good dielectric and magnetic loss properties, respectively [18].…”

Section: Methodsmentioning

confidence: 99%

Optimization with a Genetic Algorithm for Multilayer Electromagnetic Wave Absorption Cement Mortar Filled with Expended Perlite

Xie

et al. 2023

J. Mater. Sci. Technol. Res.

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Due to the complexity of the design of multilayer electromagnetic (EM) wave absorbing materials, it is difficult to establish the relationship between material parameters (type and filling ratios) and EM properties using traditional trial and error methods. Based on the measured EM parameters within a few materials and Boltzmann mixing theory, a database of EM parameters was thereafter built up. In this study, the genetic algorithm (GA) was used to design the multilayer wave-absorbing cement mortar. In order to verify this method, a multilayer mortar was fabricated and measured. The simulated and measured results are well consistent, which convincingly verifies computer-aided design. In addition, the optimized result expresses that the first layer as a matching layer guides EM waves into the interior of the material, while the other layers as absorption layers attenuate EM waves. The multilayer material may not meet the impedance gradient principle but still exhibits better EM wave absorption performance. The reflection loss (RL) of all optimized three layer sample is below –6.89 dB in the full frequency band and the minimum RL is –26.21 dB. This composite absorbing material and the GA method provide more design ideas for the design of future cement-based wave-absorbing materials and save a lot of time and material cost.

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Section: Methodsmentioning

confidence: 99%

Optimization with a Genetic Algorithm for Multilayer Electromagnetic Wave Absorption Cement Mortar Filled with Expended Perlite

Xie

et al. 2023

J. Mater. Sci. Technol. Res.

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“…The natural rubber filled with 50 wt% CCB exhibited low electromagnetic reflectivity, which was close to that of a commercial absorber. Pongmuksuwan et al [ 17 ] investigated the influence of three different types of carbon black, namely CCB and conventional carbon black types N330 and N660, on the electromagnetic reflectivity of natural rubber foams. The results revealed that the electromagnetic reflectivity of the absorber comprising CCB was significantly lower than those with N330 and N660.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Absorption and Mechanical Properties of Natural Rubber Composites Based on Conductive Carbon Black and Fe3O4

et al. 2022

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In contemporary civilization, the electromagnetic radiation from electronic devices and communication systems has become a substantial pollutant. High-performance electromagnetic absorbers have become a solution for absorbing unwanted electromagnetic waves. This research proposed a lightweight and flexible electromagnetic absorber produced from natural rubber filled with conductive carbon black (CCB) and Fe3O4. The effect of CCB, Fe3O4, and a combination of CCB and Fe3O4 as a hybrid filler on foam morpholog, electromagnetic reflectivity, tensile strength, and compression set properties were investigated. In addition, the effect of the alternating layered structure of CCB and Fe3O4 on electromagnetic absorption was investigated. The results indicated that the composite foam exhibited an interconnected network structure that enhanced the electromagnetic attenuation in the absorber. CCB increased the electromagnetic absorption of the foam, whereas Fe3O4 had less of an effect. The foam filled with the hybrid filler at the CCB/Fe3O4 ratio of 8/2 exhibited excellent electromagnetic absorption. The composite foam had a higher tensile modulus and higher strength compared to neat foam. The addition of CCB decreased the compression set; however, the compression set was improved by the incorporation of Fe3O4. Composite foams filled with hybrid filler can serve as highly efficient electromagnetic absorbing materials.

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Design of Carbon Black Reinforced Composite RAM Using Mixing Model Assisted-Methodology

Warhekar,

Bhattacharya,

Neogi

2024

IEEE Trans. Electromagn. Compat.

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Electromagnetic wave absorbing properties of carbon black-filled natural rubber latex

Cited by 3 publications

References 13 publications

Optimization with a Genetic Algorithm for Multilayer Electromagnetic Wave Absorption Cement Mortar Filled with Expended Perlite

Optimization with a Genetic Algorithm for Multilayer Electromagnetic Wave Absorption Cement Mortar Filled with Expended Perlite

Electromagnetic Absorption and Mechanical Properties of Natural Rubber Composites Based on Conductive Carbon Black and Fe3O4

Design of Carbon Black Reinforced Composite RAM Using Mixing Model Assisted-Methodology

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