Block copolymer functionalized quartz fibers/cyanate ester wave-transparent laminated composites

Zhang, Jiani; Liu, Zheng; Han, Muyi; Zhang, Junliang; Gu, Junwei

doi:10.1016/j.jmst.2022.09.005

Cited by 44 publications

(26 citation statements)

References 37 publications

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“…Due to the superior heat resistance of GNP, 50%BC still showed excellent thermal stability, and its heat resistance index ( T HRI ) could reach 172 ± 3 °C (Table S1). , …”

Section: Resultsmentioning

confidence: 99%

Bacterial-Cellulose-Reinforced Graphite Nanoplate Films for Electromagnetic Interference Shielding, Heat Conduction, and Joule Heating

Fan

Song

et al. 2023

ACS Appl. Nano Mater.

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With the flourishing development of wireless communication, there is an urgent need for flexible and robust materials with excellent thermal conductivity (TC) and electromagnetic interference (EMI) shielding performance through simple and green preparation. In this work, we efficiently prepared bacterial-cellulose-reinforced graphite nanoplate (BC-GNP) composite films by the vacuum filtration of BC/GNP mixture dispersions. Compared with the pure GNP film with a loose and disordered structure, the BC-GNP composite showed a highly aligned and compact “brick-and-mortar” structure. Benefiting from the unique structure, the resultant BC-GNP with 20 wt % BC (20%BC) exhibited a high tensile strength of 47.3 ± 1.8 MPa and an electrical conductivity of 76.9 ± 3.3 S/cm. As expected, the 20%BC showed excellent EMI shielding effectiveness (EMI SE) of 36.4 dB and a specific EMI SE (SSE/t) value of 8860 ± 400 dB·cm2/g with a thickness of 38 ± 1 μm. The in-plane TC and anisotropy index could reach up to 80.2 ± 6.4 W/mK and 73 ± 3, respectively. The 20%BC also exhibited a satisfactory Joule heating performance of 139 °C at a voltage of 6 V. More importantly, the 20%BC possessed a biodegradable property, which would completely degrade after 5 days. Thus, this work provides a strategy to facilely prepare biodegradable, high-performance, and multifunctional materials for wearable devices.

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“…Due to the superior heat resistance of GNP, 50%BC still showed excellent thermal stability, and its heat resistance index ( T HRI ) could reach 172 ± 3 °C (Table S1). , …”

Section: Resultsmentioning

confidence: 99%

Bacterial-Cellulose-Reinforced Graphite Nanoplate Films for Electromagnetic Interference Shielding, Heat Conduction, and Joule Heating

Fan

Song

et al. 2023

ACS Appl. Nano Mater.

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“…[ 21‐22 ] Meanwhile, the new interfaces introduced would bring adverse effect on the mechanical properties and wave‐ transparent performances of the laminated composites. [ 23 ]…”

Section: Background and Originality Contentmentioning

confidence: 99%

Branched Fluorine/Adamantane Interfacial Compatibilizer for PBO Fibers/Cyanate Ester Wave‐Transparent Laminated Composites

et al. 2023

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Branched fluorine/adamantane PBO precursor (preFABPBO), synthesized via random co-condensation between 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoro propane, 1,3-adamantanedicarbonyl dichloride, and trimesoyl chloride, is performed as interfacial compatibilizer, bisphenol A dicyanate ester (BADCy) resin as polymer matrix, and poly(p-phenylene-2,6-benzobisoxazole) (PBO) fibers as reinforcements to prepare PBO fibers/FABPBO-BADCy wave-transparent laminated composites by high temperature molding. The mechanical properties, wave-transparent performances, and heat resistances of PBO fibers/BADCy composites are simultaneously improved by the addition of preFABPBO. The interlaminar shear strength (ILSS) and flexural strength of PBO fibers/FABPBO-BADCy composites are 48.9 and 665.3 MPa, respectively, increased by 33.2% and 13.3% compared to those of PBO fibers/BADCy composites (36.7 and 587.4 MPa). The dielectric constant and dielectric loss values at 10 6 Hz are 2.53 and 0.003, respectively, lower than those of PBO fibers/BADCy composites (3.06 and 0.006), and the corresponding wave transmission efficiency is 94.8%, which also presents excellent stability over the wide temperature (25-200 °C ) and frequency range (10 3 -10 7 Hz and 8.2-12.4 GHz). Meanwhile, the heat resistance index and glass transition temperature are 229.9 °C and 247.5 °C , also better than those of PBO fibers/BADCy composites (229.6 °C and 247.1 °C ).

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“…Meanwhile, all aerogels showed lower weight loss and higher residual rate. The "heat resistance index" can reflect the thermal stability of the material more intuitively, 48 and the heat resistance index of aerogel is shown in Table S2.…”

Section: Emi Shielding Mechanismmentioning

confidence: 99%

MXene/CNTs/Aramid Aerogels for Electromagnetic Interference Shielding and Joule Heating

Yan

Ding

Huang

et al. 2023

ACS Appl. Nano Mater.

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It is a considerable challenge to develop a composite material with ultra-light and high electromagnetic interference (EMI) shielding efficiency for the next generation of electronic equipment. MXenes have received extensive attention in composite aerogel EMI shielding due to their abundant surface groups and ultra-high conductivity. However, the poor mechanical properties make them difficult to apply on a large scale. Here, we demonstrate a simple method to construct ultra-light conductive Ti 3 C 2 T x MXene/aramid nanofibers (ANFs)/carbon nanotubes (CNTs) aerogels with a "sandwich" structure. CNTs and MXene absorb and reflect electromagnetic waves, while ANF aerogel provides good mechanical strength.Our composite aerogels with an extra-high EMI shielding efficiency of up to 69.0 dB at the X-band, despite their thickness and density being only 2 mm and 0.0428 g/cm 3 , respectively. At the same time, the composite aerogel with a low 0.0488 W/(m•K) thermal conductivity shows extraordinary flame resistance, heat preservation, and insulation ability. Besides, MXene/ANFs/CNTs aerogel can reach 104 °C in 3 s under an 8 V voltage and shows long-term Joule heating stability. This work provides a forward-looking idea for building multifunctional EMI shielding materials. The obtained aerogels have potential applications in aerospace, portable electronic devices, and defense industries.

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Block copolymer functionalized quartz fibers/cyanate ester wave-transparent laminated composites

Cited by 44 publications

References 37 publications

Bacterial-Cellulose-Reinforced Graphite Nanoplate Films for Electromagnetic Interference Shielding, Heat Conduction, and Joule Heating

Bacterial-Cellulose-Reinforced Graphite Nanoplate Films for Electromagnetic Interference Shielding, Heat Conduction, and Joule Heating

Branched Fluorine/Adamantane Interfacial Compatibilizer for PBO Fibers/Cyanate Ester Wave‐Transparent Laminated Composites

MXene/CNTs/Aramid Aerogels for Electromagnetic Interference Shielding and Joule Heating

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