The effect of nitrile-functionalized nano-aluminum oxide on the thermomechanical properties and toughness of phthalonitrile resin

Shan, Shuyan; Chen, Xinggang; Xi, Zhenjie; Yu, Xiaoyan; Qu, Xiongwei; Zhang, Qingxin

doi:10.1177/0954008316631593

Cited by 34 publications

(17 citation statements)

References 34 publications

(42 reference statements)

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“…Figure also shows the FTIR spectra of the silane‐functionalized Gr, in which the characteristic absorption peaks at 1074 and 802 cm −1 were due to the Si─O and Si─OH groups, respectively . In addition, the new absorption band at 1548 cm −1 was attributed to N─H in‐plane deformation . All these observations confirmed the grafting of the coupling agent on the surface of Gr.…”

Section: Resultssupporting

confidence: 69%

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Amirbeygi

Khosravi

Tohidlou

2019

J of Applied Polymer Sci

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In this study, aminopropyl trimethoxysilane as an interfacial modifier was introduced on the surface of graphene (Gr) nanoplatelets. The effects of the silane‐modified graphene (SGr) loading (0, 0.05, 0.1, 0.3, and 0.5 wt %) and silane modification on the tensile, compressive, interlaminar shear stress (ILSS), and tribological properties of the epoxy‐based nanocomposites were investigated. Out of these specimens, the highest values of ILSS and compressive strength were related to the 0.3 wt % SGr–epoxy nanocomposite. The addition of SGr enhanced the tensile strength and strain to failure only at low contents (i.e., 0.05 wt %). Also, the tensile and compressive moduli were improved, and the highest values were observed at a 0.5 wt % SGr loading. In addition, decreases of approximately 40 and 68% in the coefficient of friction and wear rate, respectively, were observed at a 0.3 wt % SGr loading. Enhanced tensile, compressive, ILSS, and wear properties in the SGr–epoxy specimens were observed compared to those in the Gr–epoxy specimens. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47410.

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Section: Resultssupporting

confidence: 69%

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Amirbeygi

Khosravi

Tohidlou

2019

J of Applied Polymer Sci

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“…The transition of the small segment movement state may occur at lower temperature, and the large one may occur at higher temperature. 53 Therefore, a weak peak appears at 80–150°C, and the tan δ shows an upward trend with the addition of ADMH.…”

Section: Resultsmentioning

confidence: 98%

Curing behavior, thermal, and mechanical properties of N,N′-(4,4′-diphenylmethane)bismaleimide/2,2′-diallylbisphenol A/3-allyl-5,5-dimethylhydantoin resin system

Liu

Chen

et al. 2019

High Performance Polymers

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The 3-allyl-5,5-dimethylhydantoin (ADMH) was synthesized and characterized by Fourier transform infrared spectroscopy, 1H-nuclear magnetic resonance (NMR), and 13C-NMR spectroscopy. Then, the ADMH was used to modify the N, N′-(4,4′-diphenylmethane)bismaleimide (BDM)/2,2′-diallylbisphenol A (DABPA) resin to obtain the BDM/DABPA/ADMH resin system (BDA). The curing behavior was investigated by non-isothermal differential scanning calorimetry and the activation energy ([Formula: see text]) was obtained by Kissinger and Ozawa models. The thermomechanical property was measured by dynamic mechanical analysis. Analysis of the data revealed the complexity of the curing reaction, which was firstly dominated by the Ene reaction of allyl and C=C double bond at low and medium temperatures and was further governed by the Diels–Alder reaction and the anionic imide oligomerization occurred at high temperatures. The results demonstrated that 1-BDA had the best thermal and mechanical properties exhibiting excellent modification effect of ADMH.

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“…Phthalonitrile resin (PN resin) is a high performance polymer with excellent properties such as high temperature resistance, chemical resistance, low water absorption, and flame retardancy . These excellent properties make PN resins potentially useful in the field of composites, adhesives, and carbon precursors, and have received wide attention from researchers .…”

Section: Introductionmentioning

confidence: 99%

New model phthalonitrile resin system based on self‐promoted curing reaction for exploring the mechanism of radical promoted‐polymerization effect

Liu

Peng

et al. 2019

J of Applied Polymer Sci

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The reaction mechanism and product properties of radical promoted-polymerization effect of phthalonitrile (PN) were further studied in this article. Different from the previous blending model system, this work provided a structurally symmetrical self-promoted PN model compound [di-imide PN model monomer (DAIM-PN)], which was more conductive to study the polymerization mechanism. Combination of "in situ" infrared, proton nuclear magnetic resonance, and matrix-assisted laser desorption/ionization time of flight mass spectrometry offered a clearer picture of polymerization mechanism. The results indicated that DAIM-PN formed isoindoline and its cyclized tetramer of phthalocyanine selectively during the curing process. This work also demonstrated that the aliphatic chain participated in the reaction of nitrile group and provided more evidence for the reaction site (secondary carbon). Besides, high performance polymers with good processing properties, excellent thermal stability (overall char yield >74% at 800 C, N 2 ), and heat resistance (T g > 470 C) were obtained by blending and copolymerizing DAIM-PN with 1,3-bis(3,4-dicyanophenoxy)benzene. The effectiveness and application potential of the reaction mechanism were confirmed.Our recent work has indicated that the alicyclic mono-imide moiety (MAIM) could promote the polymerization and simplify the reaction path of PN [1,3-bis(3,4-dicyanophenoxy)benzene (3BOCN)] by the radical process. [34][35][36][37] The product structures of radical promoted-polymerization effect were mainly composed of isoindoline, minor phthalocyanine, which was different with traditional curing systems, since there was no triazine formed, and Additional Supporting Information may be found in the online version of this article.

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The effect of nitrile-functionalized nano-aluminum oxide on the thermomechanical properties and toughness of phthalonitrile resin

Cited by 34 publications

References 34 publications

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Curing behavior, thermal, and mechanical properties of N,N′-(4,4′-diphenylmethane)bismaleimide/2,2′-diallylbisphenol A/3-allyl-5,5-dimethylhydantoin resin system

New model phthalonitrile resin system based on self‐promoted curing reaction for exploring the mechanism of radical promoted‐polymerization effect

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