Ultralow dielectric constant polyarylene ether nitrile foam with excellent mechanical properties

Wang, Lingling; Liu, Xiaocan; Liu, Changyu; Zhou, Xuefei; Liu, Chenchen; Cheng, Maozeng; Wei, Renbo; Liu, Xiaobo

doi:10.1016/j.cej.2019.123231

Cited by 108 publications

(53 citation statements)

References 70 publications

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“…PEN was synthesized by 2, 6-dichlorobenzonitrile and biphenol (hydroquinone (HQ)/resorcinol (RS) = 8/2 by mol) according to previous reports in our laboratory, and the corresponding structure is shown in Scheme 1. interaction, which will seriously affect the mechanical properties and compatibility of the polymer-based nanocomposites [9]. Therefore, typically modifications of the ferroelectric ceramic nanofillers are always needed to increase the compatibility with the polymer matrix, thereby reducing the impact on the dielectric properties [10]. Furthermore, the addition of conductive particles such as metal particles, graphene, carbon fibers or carbon nanotubes is very effective for increasing the dielectric constant of the polymer system with a low addition amount [11,12].…”

Section: Methodsmentioning

confidence: 99%

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Liu

Wang

et al. 2019

Nanomaterials

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In this paper, barium titanate@zinc phthalocyanine (BT@ZnPc) and graphene oxide (GO) hybrids (BT@ZnPc-GO) connected by calcium ions are prepared by electrostatic adsorption, and then introduced into polyarylene ether nitrile (PEN) to obtain composites with enhanced dielectric and crystallization properties. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) results confirm the successful fabrication of the BT@ZnPc-GO. BT@ZnPc-GO and PEN composites (BT@ZnPc-GO/PENs) are obtained through the solution-casting method. BT@ZnPc-GO demonstrates well compatibility with PEN due to its unique structure and the organic layer of ZnPc at the periphery of BT. On the other hand, BT and GO contribute a high dielectric constant of the composites obtained. In addition, the BT@ZnPc-GO can be used as a nucleating agent to promote the crystallization of the nanocomposites. As a result, The BT@ZnPc-GO/PEN exhibits a dielectric constant of 6.4 at 1 kHz and crystallinity of 21.03% after being isothermally treated at 280 °C for 2 h at the GO content of 0.75 wt %. All these results indicate that the hybrid nanofiller BT@ZnPc-GO can be an effective additive for preparing high-performance PEN-based nanocomposites.

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Section: Methodsmentioning

confidence: 99%

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Liu

Wang

et al. 2019

Nanomaterials

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“…[12][13][14] PEN exhibits high heat resistance due to the presence of benzene rings and nitrile side groups, while the ether bond on the main chain offers flexibility to a certain extent. [15][16][17] In addition, PEN exhibits excellent flame retardancy, radiation resistance, and mechanical and dielectric properties. [18][19][20][21] In our study, a series of PEN random copolymers were designed and synthesized.…”

Section: Introductionmentioning

confidence: 99%

Design and properties of polyarylene ether nitrile copolymers with improved elongation at break

Liu

Bai

et al. 2021

J of Applied Polymer Sci

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Polyarylene ether nitrile (PEN) based on biphenol exhibits a high glass transition temperature of 216°C, a high tensile strength of 110 MPa, and low elongation at break of approximately 4%. A series of PEN random copolymers with improved elongation at break were synthesized using various bisphenol compounds and 2,6‐dichlorobenzonitrile (DCBN). The resulting PEN random copolymers exhibited a high glass transition temperature and thermal stability up to 513°C in a nitrogen atmosphere. PEN copolymers were amorphous and could easily be cast into transparent films with a tensile strength of 97.93–117.88 MPa and tensile modulus of 2187.98–2558.44 MPa. Most importantly, elongation at break of these PEN copolymers was higher than 13%. PEN copolymer films had a dielectric constant of 3.77–3.89 at 1 kHz and extremely low dielectric loss (<0.02). At the same time, the breakdown strength of PEN was in the range of 137.92–198.19 kV/mm and energy storage density was in the range of 0.32–0.68 J/cm3. Excellent mechanical, thermal, and dielectric properties of PEN make it possible to use them as high‐temperature resistant dielectrics to act on high‐temperature resistant insulated cables.

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“…[ 17 ] However, to further reduce k , the introduction of a large number of pores ( k air = 1) to reduce the material density is commonly considered as a more realistic method to achieve low k . [ 18–21 ]…”

Section: Introductionmentioning

confidence: 99%

Ultralow Dielectric Constant Polyarylene Ether Nitrile/Polyhedral Oligomeric Silsesquioxanes Foams with High Thermal Stabilities and Excellent Mechanical Properties Prepared by Supercritical CO₂

et al. 2021

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Dielectric materials with ultralow dielectric constant, excellent mechanical properties, and good thermal stability have a broader application prospect in microelectronic devices with the rapid growth of 5G communication systems. On this basis, a series of lightweight polyarylene ether nitrile (PEN)/PSS‐octamethyl substituted (POSS) foams have been prepared by supercritical carbon dioxide foaming technique combining the strategy of low dielectric constant POSS doping and the introduction of bubbles. The effects of the introduction of POSS and foaming temperature on the foaming behavior of PEN/POSS composites are studied. The density of PEN/POSS foam with 5 wt% POSS is as low as 0.208 g cm−3 and the homologous porosity is up to 82.1%, which realizes the lightweight preparation of engineering plastics. Due to the introduction of POSS and pores, the PEN/POSS foam exhibits an ultralow dielectric constant of 1.83 at 1 kHz, while the dielectric loss is as low as 0.0036 and high thermal stability (Td5 > 453 °C). In addition, the specific modulus of PEN/POSS foam is up to 1.07 GPa cm−3 g−1 due to the high performance of the PEN. These excellent properties make PEN/POSS foams have great potential in the application of microelectronic devices.

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Ultralow dielectric constant polyarylene ether nitrile foam with excellent mechanical properties

Cited by 108 publications

References 70 publications

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Design and properties of polyarylene ether nitrile copolymers with improved elongation at break

Ultralow Dielectric Constant Polyarylene Ether Nitrile/Polyhedral Oligomeric Silsesquioxanes Foams with High Thermal Stabilities and Excellent Mechanical Properties Prepared by Supercritical CO₂

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Ultralow dielectric constant polyarylene ether nitrile foam with excellent mechanical properties

Cited by 108 publications

References 70 publications

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Fabrication of BaTiO3-Loaded Graphene Nanosheets-Based Polyarylene Ether Nitrile Nanocomposites with Enhanced Dielectric and Crystallization Properties

Design and properties of polyarylene ether nitrile copolymers with improved elongation at break

Ultralow Dielectric Constant Polyarylene Ether Nitrile/Polyhedral Oligomeric Silsesquioxanes Foams with High Thermal Stabilities and Excellent Mechanical Properties Prepared by Supercritical CO2

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Product

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Ultralow Dielectric Constant Polyarylene Ether Nitrile/Polyhedral Oligomeric Silsesquioxanes Foams with High Thermal Stabilities and Excellent Mechanical Properties Prepared by Supercritical CO₂