Quartz Fiber Radome and Substrate for Aerospace Applications

Bakır, Mete

doi:10.18038/estubtda.1247951

Cited by 1 publication

(2 citation statements)

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“…The performance of wave transparent composites can be estimated by its dielectric loss factor (δ) which is a significant indicator [47]. In high-speed communication, a lower value of δ is critically important as transmission depends directly on the cumulative dielectric loss factors [1,30].…”

Section: Electrical Propertiesmentioning

confidence: 99%

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Investigation of Dielectric, Mechanical, and Thermal Properties of Epoxy Composites Embedded with Quartz Fibers

Haider,

Gul,

Faraz

et al. 2023

Polymers

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Polymer matrix wave transparent composites are used in a variety of high-speed communication applications. One of the applications of these involves making protective enclosures for antennas of microwave towers, air vehicles, weather radars, and underwater communication devices. Material performance, structural, thermal, and mechanical degradation are matters of concern as advanced wireless communication needs robust materials for radomes that can withstand mechanical and thermal stresses. These polymer composite radomes are installed externally on antennas and are exposed directly to ambient as well as severe conditions. In this research, epoxy resin was reinforced with a small amount of quartz fibers to yield an improved composite radome material compared to a pure epoxy composite with better thermal and mechanical properties. FTIR spectra, SEM morphology, dielectric constant (Ɛr) and dielectric loss (δ), thermal degradation (weight loss), and mechanical properties were determined. Compared to pure epoxy, the lowest values of Ɛr and δ were 3.26 and 0.021 with 30 wt.% quartz fibers in the composite, while 40% less weight loss was observed which shows its better thermal stability. The mechanical characteristics encompassing tensile and bending strength were improved by 42.8% and 48.3%. In high-speed communication applications, compared to a pure epoxy composite, adding only a small quantity of quartz fiber can improve the composite material’s dielectric performance, durability, and thermal and mechanical strength.

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Section: Electrical Propertiesmentioning

confidence: 99%

“…Due to their excellent dielectric, mechanical, and thermal properties, quartz fibers are recognized as the best fibers among the glass fiber family [29]. Moreover, they have good adhesion compatibility with polymeric resins [30].…”

Section: Introductionmentioning

confidence: 99%