Ultra-low dielectric constant fluorinated graphene/polybenzoxazole composite films with excellent thermal stabilities and mechanical properties

Yu, Zihua; Wu, Shaohua; Li, Chuncheng; Zheng, Liuchun; Liu, Jiajian; Zhang, Bo

doi:10.1016/j.compositesa.2021.106387

Cited by 24 publications

(34 citation statements)

References 41 publications

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“…Among them, dielectric properties have reported the key factors that determine the application of a material in the field of electronic packaging. [ 34 ] In this context, FG‐Cs were synthesized by various methods, and their physicochemical and intrinsic activity and catalytic performance were evaluated toward a variety of applications. Zhang et al.…”

Section: Synthesis Methodsmentioning

confidence: 99%

“…Among them, dielectric properties have reported the key factors that determine the application of a material in the field of electronic packaging. [34] In this context, FG-Cs were synthesized by various methods, and their physicochemical and intrinsic activity and catalytic performance were evaluated toward a variety of applications. Zhang et al first time reported the low dielectric constant (κ = 2.48) fluorinated graphene/polyimide (FG/PI) composite films via a facile solution blending process from polyamic acid (PAA) and FG solution.…”

Section: Fluorographene Compositementioning

confidence: 99%

“…Dielectric properties are the key factors that determine the material application in the field of electronic packaging. [34] The dielectric constant is mainly depending on the porosity of materials. Zhang et al first time reported the FG/PI composite films via a solution blending process, resulting FG/PI composite films showed 2.48 dielectric constant at FG concentration of 0.5 wt%.…”

Section: Dielectric and Mechanical Propertiesmentioning

confidence: 99%

“…Similarly, PI and PI/FGs water-absorbing properties were dominant places in increasing the wear rate under the condition of water lubrication compared with those under the conditions of drying sliding and oil lubrication. [50] Further, Yu et al [34] compare the pristine FPBO and FG/FPBO composite films. Their study revealed that FG 1.0 / FPBO material has lower water absorption than pristine FPBO due to incorporating highly hydrophobic FG.…”

Section: Hydrophobic Propertiesmentioning

confidence: 99%

“…[36] Similarly, the thermal stability of the FG/PI composite was tested, which showed that the temperature for 1% weight loss of the resulting composite films exhibits an obvious increase of 530 °C (19 °C) by the addition of 2 wt% FG into pure PI (511 °C). [35] Further, Yu et al [34] study showed that how introducing a tiny amount of FG on FPBO could increase/ control the thermal (thermal 5% weight loss temperature of were as high as 525 °C) properties of FG/FPBO composites. In summary, the reported study revealed that the thermal properties of pure material could enhance/altered by incorporating FG.…”

Section: Thermal Propertiesmentioning

confidence: 99%

See 4 more Smart Citations

Fluorographene and Its Composites: Fundamentals, Electrophysical Properties, DFT Studies, and Advanced Applications

Borse

Kale

Sonawane

et al. 2022

Adv Funct Materials

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Fluorographenes (FGs) are the youngest family of graphene derivatives 2D layer-structure, which has changed the hybridization state from sp 2 -to-sp 3 carbon and unique CF bonds impacting physical and chemical properties. Due to various types of CF bonds, wide bandgap, tunable F/C ratios, and unique nanostructure, the FGs show attractive physicochemical properties. Owing to the extraordinary properties, the researchers have recently paid attention to exploring FGs into fluorographene composites (FG-Cs) as a potential candidate for fundamental advances in the field of the energy system, optoelectronic, biomedical, and aeronautics. Despite their promise, in-depth experimental and theoretical studies of FGs over FG-Cs are not explored systematically. This review focuses on the recent experimental developments on FGs and FG-Cs, including fundamentals and electrophysical properties, synthesis methods, conductivity, hydrophobicity, and magnetic nature. Further, for the validation, the theoretical studies, first-principle study/density functional theory emphasize their real intrinsic activity, stability, and effects of F content, defects, and doping mechanism. Finally, the wide applications, energy systems to biomedical and optoelectronics to the aerospace industry, along with challenges and future perspectives, are also discussed. This review aims to conclude valuable insights into the fundamental science and perspective toward highly efficient FG-C-based catalysts engineering in advanced applications.

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Section: Synthesis Methodsmentioning

confidence: 99%

Section: Fluorographene Compositementioning

confidence: 99%

Section: Dielectric and Mechanical Propertiesmentioning

confidence: 99%

Section: Hydrophobic Propertiesmentioning

confidence: 99%

Section: Thermal Propertiesmentioning

confidence: 99%

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Fluorographene and Its Composites: Fundamentals, Electrophysical Properties, DFT Studies, and Advanced Applications

Borse

Kale

Sonawane

et al. 2022

Adv Funct Materials

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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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Synthesis and properties of highly thermally stable ultrathin films of fluorine‐containing hyperbranched polybenzoxazoles

Maekawa,

Nakamura,

Kudo

2023

Journal of Polymer Science

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In this paper, we aimed to develop ultrathin films of hyperbranched polybenzoxazole with a thickness in the range between 1 and 100 nm. They are expected to have great potential for various applications as functional materials due to their high thermal stability, good chemical resistance and mechanical strength. The synthesis of various hyperbranched poly(o‐hydroxyamide)s as precursors of polybenzoxazole was examined by the polycondensation of 2,2‐bis(3‐amino‐4‐hydroxyphenyl)propane (AHP) and 2,2‐bis(3‐amino‐4‐hydroxyphenyl)hexafluoropropane (AHFP) with 1,3,5‐benzenetricarbonyl trichloride (BCC), yielding the corresponding hyperbranched poly(o‐hydroxyamide), poly(AHFPm‐co‐AHPn‐co‐BCC2.0), with Mn in the range between 12,870 and 22,210 in satisfactory yields. Poly(AHFP3.0‐co‐BCC2.0), poly(AHFP2.25‐co‐AHP0.75‐co‐BCC2.0), and poly(AHFP1.50‐co‐AHP1.50‐co‐BCC2.0) showed good solubility and film‐forming ability, and ultrathin films 8.9–88.6 nm thick were prepared on silicon wafers. Heating of the ultrathin films of poly(AHFPm‐co‐AHPn‐co‐BCC2.0) on a hot plate at 350 °C for 1 h afforded the corresponding ultrathin films of hyperbranched polybenzoxazole, poly(AHFPm‐cyclo‐AHPn‐cyclo‐BCC2.0), with a thickness of 5.3–82.4 nm. Double‐layer thin films consisting of resist materials on top of hyperbranched polybenzoxazole were also prepared.

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Ultra-low dielectric constant fluorinated graphene/polybenzoxazole composite films with excellent thermal stabilities and mechanical properties

Cited by 24 publications

References 41 publications

Fluorographene and Its Composites: Fundamentals, Electrophysical Properties, DFT Studies, and Advanced Applications

Fluorographene and Its Composites: Fundamentals, Electrophysical Properties, DFT Studies, and Advanced Applications

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

Synthesis and properties of highly thermally stable ultrathin films of fluorine‐containing hyperbranched polybenzoxazoles

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