Fabrication of a flexible microwave absorber sheet based on a composite filler with fly ash as the core filled silicone rubber

Li, Qiuying; Lu, Yi-heng; Shao, Zhuoyan

doi:10.1007/s12613-022-2517-1

Cited by 7 publications

(3 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, all the peaks seen in the nanocomposites' patterns originate from the fly ash filler, proving that the particles were successfully dispersed throughout the epoxy. The recorded peaks are in accordance with those reported previous studies on the same type of fly ash [29]. In addition, as predicted, the filler's concentration increases the intensity of the peaks.…”

Section: Resultssupporting

confidence: 92%

End-Of-Use Fly Ash as an Effective Reinforcing Filler in Green Polymer Composites

Patsidis

Souliotis

2023

Polymers

View full text Add to dashboard Cite

The aim of this study is to use fly ash powder in an environmentally friendly matrix, in a novel way, addressing environmental and disposal problems. Fly ash/epoxy composites were prepared and studied varying the filler content. An investigation of structural and morphological characteristics was conducted using of X-ray diffraction patterns and scanning electron microscopy images, which revealed the successful fabrication of composites. Thermomechanical properties were studied via dynamic mechanical analysis and static mechanical tests. The composites exhibited an improved mechanical response. Broadband dielectric spectroscopy was used to investigate the dielectric response of the composite systems over the frequency range from 10−1 to 107 Hz and the temperature range from 30 to 160 °C. The analysis revealed the presence of three relaxation processes in the spectra of the tested systems. Interfacial polarization, the glass-to-rubber transition of the polymer matrix, and the rearrangement of polar side groups along the polymer chain are the processes that occur under a descending relaxation time. It was found that dielectric permittivity increases with filler content. Finally, the influence of filler content and the applied voltage under dc conditions was analyzed to determine the ability of the composites to store and retrieve electric energy. Fly ash improved the efficiency of the storing/retrieving energy of the composites.

show abstract

Section: Resultssupporting

confidence: 92%

End-Of-Use Fly Ash as an Effective Reinforcing Filler in Green Polymer Composites

Patsidis

Souliotis

2023

Polymers

View full text Add to dashboard Cite

show abstract

“…In addition to this, more and more researchers are exploring the possibility of recyclable and reused wastes as substitutes for rubber llers. In a study added y ash as a core to silicone rubber and found that silicone rubber lled with composite llers exhibited excellent thermal stability, exibility, environmental resistance, and hydrophobicity, which not only responded to green chemistry to achieve e cient y ash recycling, but also designed a new strategy to prepare microwave absorbing materials with strong potential for civil applications [15]. Lignin, as the second most abundant natural resource, is generated as a by-product in the paper and pulp industry and is produced in large quantities, its disposal is often by incineration or land ll, as it is formed from cheap materials, is abundant in renewable resources every year, is lightweight, biologically e cient, and ecologically adapted to a wide range of applications and is added to rubbers to replace carbon black[16]- [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of catechol/polyamine modification of waste brick powder followed by grafting of epoxy elastomers on natural rubber composites

Zhao,

Duan,

Zhang

et al. 2023

Preprint

View full text Add to dashboard Cite

The aim of this study is to explore a method for modifying waste brick powder (WBP) in order to reapply it to rubber products for effective resource recycling. Firstly, we use the auto polymerisation of catechol/polyamine (CPA) on the surface of WBP to form a poly catechol/polyamine (PCPA) coating as an intermediate reaction platform. And then the macromolecular modifier, epoxy-functionalized elastomer (ethylene vinyl acetate-glycidyl methacrylate terpolymer) (EVMG), is further grafted onto the PCPA coating to prepare the WBP@EVMG hybrid materials. During the preparation of the WBP@EVMG hybrid materials, a ring-opening reaction between the amine group of PCPA and the epoxy group of EVMG occurs. The NR/WBP@EVMG composites are prepared by mechanical blending. The interfacial interactions between WBP@EVMG and NR are analyzed and verified in detail by dynamic mechanical analysis (DMA) and rubber process analyzer (RPA). It is shown that the modified NR/WBP composites show increased vulcanization rate and better mechanical properties, and the tensile strength, abrasion resistance, cracking strength, and wet slip resistance of NR/WBP@EVMG-15 are increased by 29%, 6%, 16%, and 11%, respectively, compared with that of NR/WBP composites, which provides a unique idea for the reuse of waste brick powder in rubber.

show abstract

“…Due to the inherent advantages and favorable compatibility with other electromagnetic components, aerogels have become an attractive candidate for multifunctional EMW absorbing materials. Yang et al [10] successfully synthesized Mo 2 C/reduced graphene oxide (rGO) aerogels by hydrothermal assembly of graphene oxide, glucose, and ammonium molybdate and subsequent freeze-drying and high-temperature pyrolysis. The degree of loading of Mo 2 C nanoparticles can be easily controlled by the molar ratio of ammonium molybdate to glucose.…”

mentioning

confidence: 99%

Editorial for special issue on electromagnetic wave absorbing materials

Jia

2023

Int J Miner Metall Mater

View full text Add to dashboard Cite

Fabrication of a flexible microwave absorber sheet based on a composite filler with fly ash as the core filled silicone rubber

Cited by 7 publications

References 57 publications

End-Of-Use Fly Ash as an Effective Reinforcing Filler in Green Polymer Composites

End-Of-Use Fly Ash as an Effective Reinforcing Filler in Green Polymer Composites

Effect of catechol/polyamine modification of waste brick powder followed by grafting of epoxy elastomers on natural rubber composites

Editorial for special issue on electromagnetic wave absorbing materials

Contact Info

Product

Resources

About