A review of epoxy-based composite materials: Synthesis, structure and application for electromagnetic wave absorption

Zhang, Jianxin; Ma, Mingliang; Bi, Yingpu; Liao, Zijian; Ma, Yong; Huang, Weibo; Lyu, Peng; Feng, Chao

doi:10.1016/j.jallcom.2022.166096

Cited by 13 publications

(2 citation statements)

References 151 publications

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“…[1][2][3][4]. However, epoxy/ polyurethane reinforced by fiber material such as glass wool and rock wool, possess outstanding characteristics such as high dielectric constant and good thermal stability, low density and hence high specific stiffness and strength which make them highly suitable for used in the manufacturing technology [5][6][7][8][9][10][11]. However; such characteristics in an epoxy require high levels of cross linking which usually results in brittle behavior.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Relaxation, Electric Conductivity and Thermodynamic Studies on Epoxy Polyurethane Blend and Their Composites

Shokralla

2024

IJMSA

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The purpose of this study is to improve the dielectric properties of epoxy-based polymer composites by adding rock and glass wool to achieve a relatively high dielectric constant and lower dispersion; hence the dielectric relaxation of composite materials which combines of epoxy/polyurethane reinforced with fibrous materials (rock wool (RW) and glass wool (GW)) with constant weight fraction of (10%) were investigated. The data of AC conductivity have been analyzed in the light of different theoretical models based on correlated barrier hopping (CBH) and Maxwell-Wagner model. The dielectric measurements were carried out for all samples over the frequency range of (10 2 -10 7 ) Hz and over temperature range of (293-463) K 0 . It is found that all samples displayed dielectric dispersion, thus the result for dielectric constant and dissipation factor give a direct evidence of the existence of Debye relaxation leaving a wide distribution of relaxation time. Eyring's relaxation rate equation have been used to determine the thermodynamic parameters, Gibbs free energy of activations and enthalpy for all samples. The results showed the existence of a stronger intermolecular interaction in all samples.

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Section: Introductionmentioning

confidence: 99%

Dielectric Relaxation, Electric Conductivity and Thermodynamic Studies on Epoxy Polyurethane Blend and Their Composites

Shokralla

2024

IJMSA

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“…Multiple materials compensate for certain attributes for each other, thereby achieving a synergistic effect. Unlike products made of a solo material, composites consisting of diverse materials have versatile functions that can satisfy demands of the manufacturers and scholars [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Combing High-Modulus Fibers with a Novel Foaming Structure Applied to Protective Sandwich-Structured Composites: Manufacturing Techniques and Property Evaluations

Lin

et al. 2023

Polymers

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This study proposes the composites with a sandwich structure that is primarily made by the multi-step foaming process. The staple material is polyurethane (PU) foam that is combined with carbon fibers, followed by a Kevlar woven fabric. The composites are evaluated in terms of puncture resistance, buffer absorption, and electromagnetic wave shielding effectiveness (EMSE). The manufacturing process provides the composites with a stabilized structure efficiently. Serving the interlayer, a Kevlar woven fabric are sealed between a top and a bottom layer consisting of both PU foam and an aluminum film in order, thereby forming five-layered composites. Namely, the upper and lower surfaces of the five-layered sandwiches are aluminum films which is laminated on a purpose for the EMSE reinforcement. The test results indicate that the PU foam composites are well bonded and thus acquire multiple functions from the constituent materials, including buffer absorption, puncture resistance, and EMSE. There is much prospect that the PU foam composites can be used as a protective material in diverse fields owing to a flexible range of functions.

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Electromagnetic wave absorption properties of CNFs@CAC-cement bonded SiC–Al2O3 composites

Zhou,

Ding,

Xiao

et al. 2024

Ceramics International

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A review of epoxy-based composite materials: Synthesis, structure and application for electromagnetic wave absorption

Cited by 13 publications

References 151 publications

Dielectric Relaxation, Electric Conductivity and Thermodynamic Studies on Epoxy Polyurethane Blend and Their Composites

Dielectric Relaxation, Electric Conductivity and Thermodynamic Studies on Epoxy Polyurethane Blend and Their Composites

Combing High-Modulus Fibers with a Novel Foaming Structure Applied to Protective Sandwich-Structured Composites: Manufacturing Techniques and Property Evaluations

Electromagnetic wave absorption properties of CNFs@CAC-cement bonded SiC–Al2O3 composites

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