Abstract MXenes are a family of two‐dimensional (2D) layered transition metal carbides/nitrides that show promising potential for energy storage applications due to their high‐specific surface areas, excellent electron conductivity, good hydrophilicity, and tunable terminations. Among various types MXenes, Ti 3 C 2 T x is the most widely studied use in capacitive applications, especially supercapacitors (SCs). However, stacking oxidation MXene sheets inevitably lead significant loss...

This article is the first report on a phthalonitrile monomer containing vinyls in main chain.

The fluorine-containing phthalonitrile PBDP has a low dielectric constant and an ultra-low water absorption, which is expected to be applied in electronic packaging.

ABSTRACT A novel pyridine‐containing aromatic phthalonitrile monomer, 2,6‐bis[4‐(3,4‐dicyanophenoxy)benzoyl]pyridine (BCBP) was synthesized from the nitro displacement of 4‐nitrophthalonitrile by phenoxide 2,6‐bis (4‐hydroxybenzoyl)pyridine (BHBP). 4‐(Aminophenoxy) (APPH) selected to promote curing reaction, and behavior has been investigated differential scanning calorimetric (DSC), suggesting a wide processing window about 64 °C. Different additive concentrations resulted in polymers with...

A novel quinoxaline-based phthalonitrile monomer, namely, 4,4′-(((quinoxaline-2,3-diylbis (oxy))bis (3,1-phenylene))bis (oxy))di-phthalonitrile (QDOP), was successfully synthesized by nucleophilic substitution reaction, which exhibits a low melting point (85°C) and wide processing window (150°C). The QDOP monomer cured with 4-aminophenoxy (APPH) as catalyst different temperature programs, the curing process kinetics were discussed in detail non-isothermal differential scanning calorimetric...

To improve the shock resistance of personal protective equipment and reduce casualties due to wave accidents, this study prepared four types carbon fiber/polymethacrylimide (PMI) foam sandwich panels with different face/back layer thicknesses core densities subjected them quasi-static compression, low-speed impact, high-speed non-destructive tests. The mechanical properties energy absorption capacities impact-resistant panels, featuring ceramic/ultra-high molecular-weight polyethylene...

Bio-based phthalonitrile resins were synthesized using a two-step process. Initially, vanillin underwent nucleophilic reaction with nitro and potassium carbonate to form intermediates, which then dissolved in N, N-dimethylformamide. The intermediate was divided into two portions, 4,4’-oxydianiline 4,4’-methylenedianiline added each portion, respectively, produce different vanillin-based monomers: OVA monomer DVA monomer. successful synthesis of these bio-based monomers confirmed Fourier...

Resorcinol-based phthalonitrile (R-CN)/nano-aluminum oxide (Al 2 O 3 ) nanocomposites were prepared via a two-step approach. Firstly, Al was functionalized with nitrile groups on the surface of nanoparticles, which confirmed by Fourier transform infrared spectroscopy, thermogravimetric analysis, and scanning electron microscopy (SEM). The effect nano-Al particles thermomechanical flexural properties has been evaluated for different weight ratios ranging between 0% 5%. Compared pure ,...

Abstract Phthalonitrile (PN) resin promising material for preparing high‐speed and high‐frequency electronic packaging because of its unique hightemperature resistance excellent insulation performance. A fluorinated PN oligomer (4,4’‐bis ( p ‐perfluoro‐phenol‐(bis( ‐phenol)perflouoropropane‐2,2‐diyl)‐ ‐oxy‐diphthalonitrile) (PFDP)) containing trifluoromethyl decafluorobiphenyl groups are designed, synthesized, characterized. The is blended with 4‐(aminophenoxy) phthalonitrile (APPH), then...

Abstract Fluoropolymers find applications in heat‐resistant cables, chemical‐resistant linings, electronic components, cladding materials, and weather‐resistant films. Therefore, it is imperative to improve their temperature resistance level dielectric properties. In this study, a series of new fluorinated epoxy‐phthalonitrile resins with different mass ratios were prepared by adding phthalonitrile the epoxy resin matrix, followed two‐step reaction amine at low temperature, then nitrile...

<italic>o</italic>-BDB,<italic>m</italic>-BDB and<italic>p</italic>-BDB monomers with imperfect crystal structures were synthesized by a nucleophilic substitution reaction.

A novel PUI/kaolinite nanocomposite foam was prepared by<italic>in situ</italic>polymerization, and intercalated exfoliated structures of the modified kaolinite were formed in PUI foams.

To improve the processability of biphenyl phthalonitrile resin, a flexible siloxane structure was introduced into monomer through molecular design, which then blended with to prepare alloy resins. When ratio containing 1:1, processing window widened from 58 110°C, as compared that phthalonitrile. Due introduction resins, initial decomposition temperature silicon-containing resin increased 385 516°C. More importantly, exhibited high bending strength (66 MPa) and modulus (3762 MPa), indicating...

Abstract Currently, there is limited literature on the introduction of naphthalene ring into phthalonitrile. In this study, we have successfully synthesized a novel phthalonitrile monomer (CPND) by incorporating symmetrical rigid structure, long flexible chains, and high‐density cyano groups resin. The being cured with two different agents procedures to investigate impact curing agent structure ramp‐up procedure polymer properties. verified using nuclear magnetic resonance (NMR), infrared...

Abstract A polynitrile‐based phthalonitrile monomer with a low melting point containing an alkyl center, namely, 4,4′,4′′‐ [(methanetriyltris (benzene‐4,1‐diyl)) tris (oxy)] triphthalonitrile (MDTP), is synthesized from nucleophilic substitution reaction of 4,4′,4′′‐trihydroxytriphenylmethane and 4‐nitrophthalonitrile. The MDTP cured at different temperatures 4‐(aminophenoxy)phthalonitrile (APPH) as the curing agent to give polymers. polymers are characterized by Fourier Transform Infrared...

In this study, we have prepared a series of composite materials by using catechol-based phthalonitrile resin as the matrix, and hexagonal boron nitride ( h-BN) nanoparticles fillers to improve toughness thermal conductivity matrix. The surface was modified with silane coupling agent (KH550) under mild conditions enhance interfacial compatibility, which could be confirmed Fourier transform infrared spectroscopy thermogravimetric analysis. conductivities composites reached 0.79 W (m·K) −1 ,...

A series of self-catalytic phthalonitrile compounds with o-, m-, and p- amino groups, namely, 4-(2-aminophenoxy)phthalonitrile (2-NH 2 -CN), 4-(3-aminophenoxy)phthalonitrile (3-NH 4-(4-aminophenoxy)phthalonitrile (4-NH were synthesized via a facile nucleophilic displacement nitro-substituent 4-nitrophthalonitrile. The resins prepared by curing 2-NH -CN, 3-NH 4-NH -CN 1,3-bis(3,4-dicyanophenoxy) benzene ( m-BDB). structures these characterized Fourier transform infrared spectroscopy, proton...

Phthalonitrile resin/exfoliated hexagonal boron nitride ( h-BN) composites with high thermal conductivity were fabricated using a novel approach. The route included two steps, micro- h-BN was coated and dispersed by phthalonitrile monomers via the function of heterogeneous nucleation, then exfoliated heat release during curing process. achieved 0.736W (m·K) −1 containing 20 wt% h-BN, which is 3.17 times higher than that pure resin at 0.232W . Compared to traditional routes, preparation...