A novel low-dielectric nanocomposite with hydrophobicity property: Fluorinated MOFs modified bismaleimide-triazine resin

Li, Xiaodan; Liu, Xiaoqing; He, Rui; Liu, Hongyu

doi:10.1016/j.mtcomm.2021.102802

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…However, a dielectric constant of PN-NH 2 /BECE resins display a somewhat higher dielectric constant than pure BECE resin and the extent of increase in the dielectric constant is within 4.3%. As it is reported by numerous studies, − extremely low dielectric constant of cyanate esters is due primarily to its highly symmetrical structure of the triazine ring that could restrict the movement of the dipole and reduce polarizability. The incorporation of PN-NH 2 may damage the structured arrangement of triazine rings, which leads to a slight increase of the dielectric constant for PN-NH 2 /BECE resins.…”

Section: Resultsmentioning

confidence: 93%

Amine-Containing Phthalonitrile Catalyst for Cyanate Esters with High Catalytic Activity and Low Side Effects

Jiang,

Yin,

Xing

et al. 2023

ACS Appl. Polym. Mater.

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The curing reaction of cyanate ester (CE) resin is characterized by high temperature and long time, which makes its preparation process complicated, time-consuming, and energy-consuming. To reduce their curing temperature and time, a nonmetallic catalyst, 4-(4-aminophenoxy) phthalonitrile (PN-NH 2 ), was applied to accelerate the curing of bisphenol E cyanate ester (BECE). The effects of PN-NH 2 contents on the curing behavior, thermal, mechanical, and dielectric properties of PN-NH 2 /BECE were investigated. The characteristic curing temperatures of PN-NH 2 /BECE, compared to that of pure BECE, were significantly decreased by the incorporation of PN-NH 2 and so was the activation energy. For instance, when the content of PN-NH 2 ≥ 7 wt %, the mixtures would gel at room temperature and the activation energy was decreased by 42.4% for Ozawa−Flynn−Wall method and 45.2% for Kissiger−Akahira− Sunose method; compared with pure BECE, the maximum reduction of onset, peak, and endset temperatures for catalyzed resins are decreased by 198.6, 93.5, and 61.9 °C, respectively. In addition, unlike the traditional catalysts, PN-NH 2 was chemically bounded to the cross-linked network of CE, thus avoiding stress concentration, migration, precipitation, and plasticizing effects of residual catalysts in the cured resins. Consequently, the superior properties of BECE, such as mechanical (flexural strength >163 MPa and tensile strength >107 MPa) and dielectric properties (dielectric constant of 2.94 to 3.17), were retained whilst the curing temperatures were greatly reduced. The improved processability could broaden the application of cyanate esters.

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Section: Resultsmentioning

confidence: 93%

Amine-Containing Phthalonitrile Catalyst for Cyanate Esters with High Catalytic Activity and Low Side Effects

Jiang,

Yin,

Xing

et al. 2023

ACS Appl. Polym. Mater.

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Design of Imide Oligomer‐Mediated MOF Clusters for Solar Cell Encapsulation Systems by Interface Fusion Strategy

Zhang

et al. 2023

Advanced Science

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Dielectric encapsulation materials are promising for solar cell areas, but the unsatisfactory light‐management capability and relatively poor dielectric properties restrict their further applications in photovoltaic and microelectronic devices. Herein, an interface fusion strategy to engineer the interface of MOF (UiO‐66‐NH2) with anhydride terminated imide oligomer (6FDA‐TFMB) is designed and a novel MOF cluster (UFT) with enhanced forward scattering and robust porosity is prepared. UFT is applied as an optical and dielectric modifier for bisphenol A epoxy resin (DGEBA), and UFT epoxy composites with high transmittance (>80%), tunable haze (45–58%) and excellent dielectric properties can be prepared at low UFT contents (0.5–1 wt%), which delivers an optimal design for dielectric encapsulation systems with efficient light management in solar cells. Additionally, UFT epoxy composites also show excellent UV blocking, and hydrophobic, thermal and mechanical properties. This work provides a template for the synthesis of covalent bond‐mediated nanofillers and for the modulation of haze and dielectric properties of dielectric encapsulation materials for energy systems, semiconductors, microelectronics, and more.

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A highly-crosslinked phthalonitrile modified bismaleimide-triazine resin for PCB substrates: The synergistic effect on curing behavior and properties

Liu

Shuai

et al. 2023

European Polymer Journal

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A novel low-dielectric nanocomposite with hydrophobicity property: Fluorinated MOFs modified bismaleimide-triazine resin

Cited by 3 publications

References 44 publications

Amine-Containing Phthalonitrile Catalyst for Cyanate Esters with High Catalytic Activity and Low Side Effects

Amine-Containing Phthalonitrile Catalyst for Cyanate Esters with High Catalytic Activity and Low Side Effects

Design of Imide Oligomer‐Mediated MOF Clusters for Solar Cell Encapsulation Systems by Interface Fusion Strategy

A highly-crosslinked phthalonitrile modified bismaleimide-triazine resin for PCB substrates: The synergistic effect on curing behavior and properties

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