The effect of the vanillin-derived diene compound on the thermal, dielectric and mechanical properties of epoxy resins

Yuan, Zhigang; Wang, Lei; Sun, Mingming; Zhang, Xugang; Derradji, Mehdi; Zhang, Bin; Li, Jianhui; Xue, Gang; Zhao, Ming; Liu, Caizhao

doi:10.1016/j.mtcomm.2023.106119

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…Figure 4B indicates that increasing the addition of MNEM shifted T g of E‐MNEM thermosets to lower temperatures compared with E‐0MNEM. For instance, T g of E‐4MNEM decreased from 183 to 134°C, which is explained by the molecular chain extension by MNEM, and cross‐link density of thermosets was weakened with the incorporation of MNEM 26 …”

Section: Resultsmentioning

confidence: 99%

“…The dielectric constant and loss were reduced, with 10%–10.2% and 36.8%–44.4%. Meanwhile, the Y c increased from 14.95% to 23.46% reflecting a 56.9% improvement 26 . In light of these facts, introducing Schiff‐base structure into the polymer main chain could be a good strategy to improve its toughness without compromising thermal stability.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of an alkynyl‐ and allyla‐ terminated modifiers and its thermal and mechanical properties in copolymer with epoxy resin

Yuan,

Sun,

Zhang

et al. 2024

Polymers for Advanced Techs

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In this work, this study aimed to overcome the inherent disadvantage of low thermal stability and brittleness of epoxy resins. A novel modifiers containing alkynyl‐ and allyla‐ groups, (E)‐1‐(4‐(allyloxy)‐3‐methoxyphenyl)‐N‐(3‐ethynylphenyl)methanimine (MNEM) was prepared and confirmed by Fourier transform infrared spectroscopy (FTIR) and 1H‐nuclear magnetic resonance (1H NMR), and selected to improve the thermal stability and toughness of bisphenol A‐type epoxy resin (E51). The blend resins were produced by blending with different contents of MNEM into E51 resin, named E‐MNEM resins. Meanwhile, the thermal stability, mechanical properties, and micromorphology of E‐MNEM blends were analyzed in details. It was found that the thermal stability of E‐MNEM resins was improved by increasing the proportion of MNEM. Compared with E‐0MNEM resin, when the MNEM concentration reached 40 wt%, the char yield (Yc) increased from 14.95 to 29.62%, reflecting a 98.1% improvement. In addition, an appropriate concentration of MNEM could be conductive to improving the mechanical properties. An improvement of 25.5 and 7.1% in elongation and tensile strength along with the maximum value of 17.6 kJ/m2 for the impact strength was achieved by the cured E‐MNEM resins containing 20 wt% of MNEM. Finally, the fracture surface morphology of the E‐MNEM resins was analyzed by the scanning electron microscope (SEM).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of an alkynyl‐ and allyla‐ terminated modifiers and its thermal and mechanical properties in copolymer with epoxy resin

Yuan,

Sun,

Zhang

et al. 2024

Polymers for Advanced Techs

Self Cite

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“…Incorporating flame retardants is an effective way to reduce the flammability of EP. Halogen‐free flame retardants (HFFRs) have become very popular because of their safety and environmental protection 7–9 …”

Section: Introductionmentioning

confidence: 99%

“…Halogen-free flame retardants (HFFRs) have become very popular because of their safety and environmental protection. [7][8][9] Metal hydroxides, such as layered double hydroxides (LDHs), aluminum hydroxide (ATH), magnesium hydroxide (MH), and so forth, are important HFFRs in the market. [10][11][12][13][14] MH has been incorporated into polymers such as EP to improve their flame retardancy because of its low price, environment friendliness, nontoxicity, high decomposition temperature ($340 C, which is 140 C higher than that of ATH), and strong smoke suppression effect.…”

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confidence: 99%

Flame retardancy and smoke suppression effect of an organic–inorganic hybrid containing phosphaphenanthrene‐modified magnesium hydroxide/zinc borate on epoxy resin

et al. 2023

J of Applied Polymer Sci

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To improve the flame retardancy and smoke suppression effect of epoxy resin (EP), a new organic–inorganic hybrid (MH@ZB‐ODOPB) was fabricated. First, hierarchical‐structured particles (MH@ZB) were prepared by gradually depositing zinc borate (ZB) on the surface of magnesium hydroxide (MH) via a heterogeneous deposition process. Second, MH@ZB was modified with 10‐(2,5‐dihydroxyphenyl)‐10‐hydro‐9‐oxa‐10‐phospha‐phenanthrene‐10‐oxide (ODOPB) to obtain MH@ZB‐ODOPB. Finally, the chemical structure and form of MH@ZB‐ODOPB were analyzed via X‐ray diffraction, Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and scanning electron microscopy. The characterization results show that ZB was loaded onto the surface of MH, and ODOPB was grafted on the surface of MH@ZB. The cone calorimetry test results show that when 7.5 wt% MH@ZB‐ODOPB was added into EP, the peak heat release rates, total heat release, total smoke production, and peak smoke production rates decreased by 51.8%, 42.4%, 58.1%, and 66.1%, respectively. Moreover, EP/MH@ZB‐ODOPB exhibited a limiting oxygen index of 33%. These results show that the incorporation of MH@ZB‐ODOPB into EP composites considerably improved the flame retardancy and smoke suppression properties of EP composites. The double action of MH@ZB‐ODOPB in condensed and gas phases was investigated by analyzing the carbon residue and pyrolysis gas. Furthermore, the implementation of ODOPB improves the mechanical properties of EP composites.

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Green Approaches in Manufacturing Polyimides: From Eugenol-Based Monomers to Cross-Linked Polyimides with Low Dielectric Properties Utilizing γ-Valerolactone as the Solvent

Lin,

Chao,

Busireddy

et al. 2024

ACS Sustainable Chem. Eng.

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The effect of the vanillin-derived diene compound on the thermal, dielectric and mechanical properties of epoxy resins

Cited by 3 publications

References 45 publications

Synthesis of an alkynyl‐ and allyla‐ terminated modifiers and its thermal and mechanical properties in copolymer with epoxy resin

Synthesis of an alkynyl‐ and allyla‐ terminated modifiers and its thermal and mechanical properties in copolymer with epoxy resin

Flame retardancy and smoke suppression effect of an organic–inorganic hybrid containing phosphaphenanthrene‐modified magnesium hydroxide/zinc borate on epoxy resin

Green Approaches in Manufacturing Polyimides: From Eugenol-Based Monomers to Cross-Linked Polyimides with Low Dielectric Properties Utilizing γ-Valerolactone as the Solvent

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