High temperature resistant polymer foam based on bi-functional benzoxazine-phthalonitrile resin

Lei, Wenwu; Wang, Dengyu; Liu, Ying; Li, Kui; Liu, Qiancheng; Wang, Pan; Feng, Wei; Liu, Qi; Yang, Xulin

doi:10.1016/j.polymdegradstab.2022.110003

Cited by 28 publications

(31 citation statements)

References 38 publications

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“…Two obvious exothermic peaks were observed at 207.3 and 272.3 C for BAfa, which were attributed to catalytic polymerization and self-polymerization of benzoxazine, respectively, the catalytic polymerization occurred at lower temperature may be assisted by the active groups in the oligomers. However, three obvious exothermic peaks were observed in BAfa-30ma, BAfa-50ma, and 1 H NMR (B, C, D) spectra of BAfama precursors BAfa-70ma. The two exothermic peaks at relatively lower temperature may be attributed to catalytic polymerization and selfpolymerization of benzoxazine, as is the case for BAfa, but they occurred at lower temperature because more reactive functional groups were generated in BAfa-ma.…”

Section: Curing Reactivitymentioning

confidence: 97%

“…Benzoxazine resin, as a relatively new thermosetting resin, is known to possess some intriguing properties such as chemical resistance, low flammability, high thermal stability, high modulus and strength, good dielectric properties, zero shrinkage 1 and no small molecules release in the process of ring‐opening polymerization 2–5 . These merits impart it high potential to be applied in areas like printed circuit board, 6 aerospace, 7,8 electronic packaging 9 .…”

Section: Introductionmentioning

confidence: 99%

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Improved curing reactivity, thermal resistance and mechanical properties of furylamine‐based benzoxazine using melamine as an amine source

Fan

Zhang

et al. 2022

Polymers for Advanced Techs

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Benzoxazine resin is known as a high‐performance thermosetting resin, but the relatively high curing temperature and low cross‐linking density limit its broad application. The furylamine based benzoxazines possess great comprehensive performances and show great potential as bio‐based materials. In this work, the benzoxazine precursors (BAfa‐ma) containing furylamine were synthesized by using melamine as diamine to promote the curing reactivity and thermal resistance of furylamine based benzoxazines. The Fourier transform infrared (FT‐TR) and proton nuclear magnetic resonance (1H NMR) spectroscopy were used to confirm the chemical structures of BAfa‐ma, and differential scanning calorimetric (DSC), and thermogravimetric analysis (TGA) were applied to verify the curing behavior and performance of obtained polymers. It is showed that there are less benzoxazine rings in BAfa‐ma as more melamine introduced, on the contrary, more phenolic hydroxyls and secondary amines appeared as built‐in catalysts. What's more, BAfa‐ma have higher reactivity, shorter gelation time and lower curing temperature. Additionally, more melamine would lead to higher crosslinking density and higher thermal resistance, poly(BAfa‐70ma) shows Tg up to 318.6 and 76.4°C higher than that of poly(BAfa). Moreover, the mechanical and dielectric properties of the corresponding glass fiber reinforced composites laminates are also investigated, and it is found that proper amount of melamine may be beneficial for higher mechanical strength.

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Section: Curing Reactivitymentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Improved curing reactivity, thermal resistance and mechanical properties of furylamine‐based benzoxazine using melamine as an amine source

Fan

Zhang

et al. 2022

Polymers for Advanced Techs

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“…Due to the negative Δδ between PEN solution and EAC, P-EAC showed the most special morphology from the top to the bottom. The density of P-EAC, P-HAC, P-NBA, P-IPA, and P-EA is 0.48, 0.36, 0.39, 0.45, and 0.32 g/cm 3 , and the corresponding porosity is 47.82%, 60.87%, 57.61%, 51.17%, and 65.22%, respectively. P-EAC should show the lowest porosity of 47.82%.…”

Section: Morphologymentioning

confidence: 99%

“…Compared with the bulky form, introducing pores into a solid material often gives particular properties, that is, good insulation, low lightness, and high specific strength. [1][2][3] Preparation and utilization of porous material are of high interest in academic and industrial fields. Due to the rich variety and easy processing of the polymer, 4 we are currently in polymer age and porous polymer materials are irreplaceable in daily life.…”

Section: Introductionmentioning

confidence: 99%

Effect of nonsolvent on the structures and properties of poly(arylene ether nitrile) films prepared by the phase inversion method

Wang

Yang

Chen

et al. 2022

J of Applied Polymer Sci

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In this study, a series of nonsolvents including ethyl acetate (EAC), acetic acid (HAC), n-butyl alcohol (NBA), iso-propyl alcohol (IPA) and ethanol (EA) were selected during the phase inversion process of poly(arylene ether nitrile) (PEN) films. The mechanism of film formation was tightly related with the interactions among polymer, solvent and nonsolvent. In the case of EAC, the aggregated sphere in P-EAC confirmed the in situ aggregate mechanism of polymer chains during the phase inversion process. As the nonsolvent-polymer interaction increases from HAC, NBA, IPA to EA, the phase inversion mechanism was gradually changed from the delayed to transient, as verified by the morphology transformation from spongy-like to finger-like. Dielectric, mechanical properties of these PEN films are tightly related with the morphological features, while their thermal properties are similar. Among them, P-EAC show the optimal properties for potential application in the low-k films, with a dielectric constant, T d5% , tensile strength of 1.99, 515.84 C, and 36.08 MPa, respectively. This work can provide references for tailoring the structures and properties of PEN films through rational selection of nonsolvent via the phase inversion method.film, nonsolvent, phase inversion method, poly(arylene ether nitrile) | INTRODUCTIONCompared with the bulky form, introducing pores into a solid material often gives particular properties, that is, good insulation, low lightness, and high specific strength. [1][2][3] Preparation and utilization of porous material are of high interest in academic and industrial fields. Due to the rich variety and easy processing of the polymer, 4 we are currently in polymer age and porous polymer materials are irreplaceable in daily life. 5

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“…This class of polymers has attracted worldwide attention owing to its valuable advantages compared to other thermosetting resins, including excellent mechanical performance, high glass transition values (T g ), low surface‐free energy, near‐zero volumetric changes upon curing, and flexible molecular design capability 9–12 . All these properties make polybenzoxazines promising materials for various applications (e.g., aerospace and electronic packing), while the stable rigid resin structure presents a trade‐off with toughness thus causing the brittle feature to hamper its promotion in industry 13–16 …”

Section: Introductionmentioning

confidence: 99%

Co‐catalytic system design for deriving reactive diluent to construct robust benzoxazine resin with microphase‐separated structure

Xiang

et al. 2023

J of Applied Polymer Sci

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Exploitation a facile and effective strategy for preparing benzoxazine resins with outstanding processability and robust mechanical properties still exists a challenge. In this work, a co‐catalytic concept was proposed to fabricate high‐performance benzoxazine resin by employing curing agent to derive reactive diluent to construct microphase‐separated system. Given on the design, the reactive diluent dissolved solid benzoxazine into a low‐viscosity solution, after which the curing agent presented a catalytic effect on diluent and benzoxazine to optimize the curing crosslinking reactions. As a result, it not only increased crosslinking density for a stable mechanical network, but also induced a microphase‐separated structure to effectively dissipate energy for a strong yet tough resin system, as proved by Fourier transform infrared, differential scanning calorimetry, and dynamic mechanical analyses measurements. Moreover, the as‐prepared modified benzoxazine resin showed great potential to fabricated composites with glass fiber, in which the values of tensile strength, elongation at break, and toughness presented an improvement of 212.1%, 106.8%, and 75.0% compared to composite with pristine PH‐ddm and glass fiber, respectively. These results suggested an effective path to improve the processability and overall mechanical properties of benzoxazine resins, opening a new strategy to develop high‐performance benzoxazine materials.

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High temperature resistant polymer foam based on bi-functional benzoxazine-phthalonitrile resin

Cited by 28 publications

References 38 publications

Improved curing reactivity, thermal resistance and mechanical properties of furylamine‐based benzoxazine using melamine as an amine source

Improved curing reactivity, thermal resistance and mechanical properties of furylamine‐based benzoxazine using melamine as an amine source

Effect of nonsolvent on the structures and properties of poly(arylene ether nitrile) films prepared by the phase inversion method

Co‐catalytic system design for deriving reactive diluent to construct robust benzoxazine resin with microphase‐separated structure

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