On the correlation between electromagnetic waves absorption and electrical conductivity of carbon black filled polyethylenes

Dishovsky, Nikolay; Grigorova, M.

doi:10.1016/s0025-5408(00)00230-0

Cited by 57 publications

(43 citation statements)

References 7 publications

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“…This is illustrated in Figure 11. Note that s is for all scatterers and thus there are N terms for s; t should be for all the scatterers except s, and thus there are N À 1 terms for t; in a similar manner, there are N À 2 terms for m. The other group of terms represented by the second summation in expression (5) contains all the paths which go through a scatterer more than once, such as shown in Figure 11(b).…”

Section: Multiple Scattering Analysesmentioning

confidence: 99%

A Discrete Slab Absorber: Absorption Efficiency and Theory Analysis

Duan

Liu

Wen

et al. 2006

Journal of Composite Materials

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Slab absorber is an important topic not only for military purposes but also for commercial application. Single-layer compact slab absorber cannot meet the required wave absorption in broad wave band besides some absorption peaks, and it is very necessary to develop a new kind of absorber to meet the need of absorption in broad wave band. In this study, a discrete slab absorber (DSA) has been developed by isolating conductive medium in absorbing matrix, and the reflection loss test indicates that the DSA exhibited excellent absorption effectiveness at 8-18 GHz. With the increasing carbon black (CB) content of the isolated conductive particles in the slab absorber, the reflection loss increases in the range 8-18 GHz. When mass fraction of CB gets to 30%, the reflection loss is below À10 dB in the range 8.5-18 GHz, and the effective absorption band below À10 dB gets to 9 GHz. In comparison, the compact slab sample with 30 mass% CB only shows two absorption peaks and the effective absorption band below À10 dB is under 1 GHz. Finally, an absorption mechanism is suggested.

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Section: Multiple Scattering Analysesmentioning

confidence: 99%

A Discrete Slab Absorber: Absorption Efficiency and Theory Analysis

Duan

Liu

Wen

et al. 2006

Journal of Composite Materials

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show abstract

“…In contrast, at high CB levels, interaction and wave loss are enhanced when the EM wave transmits through the material via the formation of an electric net between CB particles, due to the narrowing of the spaces among neighbouring particles. With a combination of the three attenuation functions given above, the EM wave can be effectively attenuated [12]. A comparison between Figs.…”

Section: The Electromagnetic Properties Of CI and Cb Particlesmentioning

confidence: 99%

Absorption properties of carbonyl-iron/carbon black double-layer microwave absorbers

Meng¹,

Duan²,

Liu³

et al. 2009

Journal of Magnetism and Magnetic Materials

138

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“…But shielding cannot eliminate or weaken EMI radiation, and moreover the reflected wave may interact with the incident wave, which causes disturbance to other units or devices. Only by using electromagnetic wave absorbing materials and transferring the electromagnetic energy to other forms can the EMI radiation be attenuated to the furthest extent [39][40][41].…”

Section: Cement Based Wave Absorbing Materialsmentioning

confidence: 99%