Controllable confinement nano-reinforced organic–inorganic cyanate ester resins with optimal modulus and dielectric properties trade-offs

Wu, Yushan; Xiang, Yu; Lu, Hantian; Qin, Faxiang; Xu, Peng; Peng, Hua-Xin

doi:10.1039/d4py00481g

Polym. Chem.

2024

DOI: 10.1039/d4py00481g

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Controllable confinement nano-reinforced organic–inorganic cyanate ester resins with optimal modulus and dielectric properties trade-offs

Yushan Wu,

Yu Xiang,

Hantian Lu

et al.

Abstract: Nano-reinforced resins are widely used in aerospace fields, but the improvement of mechanical properties of nano-modified resin is always not high or even decreased due to the unsatisfactory dispersion and...

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Cited by 2 publications

References 47 publications

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Establishing interphase with “rigid-flexible coupling” crosslinked network by supramolecular structure to improve interfacial properties of high-modulus carbon fiber composites

Wu,

Lu,

Qin

et al. 2025

Composites Part B: Engineering

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Establishing interphase with “rigid-flexible coupling” crosslinked network by supramolecular structure to improve interfacial properties of high-modulus carbon fiber composites

Wu,

Lu,

Qin

et al. 2025

Composites Part B: Engineering

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Toughness and Low Dielectric Cyanate Ester Resin Modified with Polyethersulfones Containing Fluorene and Allyl Units

Zhao,

Yao,

Chen

et al. 2024

ACS Appl. Polym. Mater.

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Cyanate resin is widely used in electronic packaging, printed circuit boards, radomes, and communication satellites for its excellent dielectric performance, heat resistance, and good flame retardancy, but its high brittleness is still a real challenge to be solved. In this paper, three poly(ether sulfone)s (PESs) were prepared from bis(4-fluorophenyl)sulfone with different bisphenol compounds, namely, bis(allyl)bisphenol A (DABPA, PES-a), bisphenol fluorene (BHF, PES-b), and the mixture of DABPA and BHF (PES-ab). Then, the effects of PESs on the mechanical, thermal, and dielectric properties of 2,2′-bis(4-cyanophenyl)propane cyanate (BADCy) resins were investigated. The bulky fluorene ring and its intrinsic low dipole moment make PES-b an effective modifier to reduce the dielectric constant (ε) and dielectric loss (tanδ), as well as to improve the toughness of BADCy resin composites. The allyl units in PES-a can efficiently react with BADCy monomers, leading to a highly improved interfacial compatibility. The impact strength of the PES-b/BADCy (10/90, wt/wt) composites was increased to 23.8 kJ/m 2 , which is 146% higher compared to the pure BADCy resin (9.7 kJ/m 2 ), and the T g was also increased slightly. More importantly, the ε and tanδ of PES-b/BADCy composites (7.5/92.5, wt/wt) are 2.51 and 0.0025, respectively, which are much lower than those of the pure BADCy (2.86 and 0.0054), at 10 6 Hz. In the Ku-band range (12− 18 GHz), the wave transmittance of PES-b/BADCy (5/95, w/w) composites reaches up to 92.5%-86.1% (14−18 GHz) compared with pure BADCy resins (87.9%-81%). The low-k dielectric properties, excellent wave-transparent properties, and highly enhanced toughness of the PES/BADCy composites have great potential for applications in microelectronics and aerospace.

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Controllable confinement nano-reinforced organic–inorganic cyanate ester resins with optimal modulus and dielectric properties trade-offs

Abstract: Nano-reinforced resins are widely used in aerospace fields, but the improvement of mechanical properties of nano-modified resin is always not high or even decreased due to the unsatisfactory dispersion and...

Cited by 2 publications

References 47 publications

Establishing interphase with “rigid-flexible coupling” crosslinked network by supramolecular structure to improve interfacial properties of high-modulus carbon fiber composites

Establishing interphase with “rigid-flexible coupling” crosslinked network by supramolecular structure to improve interfacial properties of high-modulus carbon fiber composites

Toughness and Low Dielectric Cyanate Ester Resin Modified with Polyethersulfones Containing Fluorene and Allyl Units

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