Improvement in toughness and flame retardancy of bismaleimide/diallyl bisphenol A resin with a eugenol allyl ether-grafted polysiloxane

Zhang, Zilong; Zhang, Ke; Xie, Kaili; Bao, Ying; Li, Xiaohan; Huang, Jiateng; Li, Xiaojie; Wei, Wei

doi:10.1016/j.eurpolymj.2022.111594

Cited by 15 publications

(12 citation statements)

References 43 publications

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“…After that, a series of prepolymers were poured into the preheated molds and degassed for 20 min under vacuum. Finally, cured polymers were obtained following the curing program of 180 C/1 h + 220 C/3 h. [27] The formulation of BD-MPAM resins is listed in Table 1.…”

Section: Preparation Of Prepolymers and Cured Samplementioning

confidence: 99%

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

Yuan

Wang

Liu

et al. 2023

Polymer Engineering & Sci

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In this study, a novel biobased allyl compound with Schiff‐based structure (MPAM) was developed to improve the toughness and thermal properties of 4,4′‐bismaleimidodiphenylmethane (BDM). The chemical structure of MPAM was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H NMR). A series of BDM/DBA‐MPAM blend resins (BD‐MPAM resins) were prepared by adjusting the mass ratio of BDM + DBA (BD) to MPAM. The effects of MPAM content on the curing behavior, thermal and mechanical properties of BD‐MPAM resins were discussed in details. Compared with BD resin, the thermal stability of modified resins was improved by increasing the content of MPAM. Meanwhile, an increase of 37.1% in flexural strength, and 228 MPa in flexural modulus were obtained for the cured BD‐MPAM resin having 10 wt% MPAM loading compared to the BD resin. The impact strength of BD‐10 wt% MPAM is of the maximum value (6.6 kJ/m2). Finally, the fracture surface morphology of the BD‐MPAM resins was studied by the scanning electron microscope (SEM).

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Section: Preparation Of Prepolymers and Cured Samplementioning

confidence: 99%

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

Yuan

Wang

Liu

et al. 2023

Polymer Engineering & Sci

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“…HBPSi is generally fabricated by the co-hydrolysis of silane coupling agents with different structures and typically exists on a continuum of polymer-modified glass to glass-reinforced organic polymers. [21][22][23] Theoretically, connecting new molecular chains to this continuous phase facilitates the preparation of novel and precision-tailored materials. The formation of HBPSi hybrid materials owing to the interactions between HBPSi and polymer networks has been shown to result in a unique 3D-network structure, highly branched topologies, multifunctionalities, and excellent physical-chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Dong,

Mao,

Liang

et al. 2023

J of Applied Polymer Sci

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It is challenging to endow poly(methyl methacrylate) (PMMA) with good dielectric properties and UV absorption capacity while simultaneously overcoming its poor heat resistance. Herein, we report for the first time a novel organic–inorganic hybrid (PMMA‐HBPSi) derived from methyl methacrylate (MMA) and hyperbranched polysiloxane (HBPSi) fabricated via γ‐radiation curing. The typical properties (thermal stability, optical characteristics, and dielectric properties) of the hybrids were systematically investigated and discussed. The results demonstrated that the incorporation of HBPSi into the PMMA resin not only increased the thermal resistance, dimensional stability, and dielectric properties but also remarkably reduced the UV transmittance. Specifically, in comparison with pure PMMA, the initial degradation temperature (Tdi) of PMMA‐HBPSi increased by 31°C, with no phase transition occurred in a temperature range of 60–230°C, thus illustrating a significant improvement in the glass‐transition temperature. Moreover, the thermal expansion coefficient decreased by 86.9% at temperatures exceeding 118°C. The UV transmittance of PMMA was also found to decrease by 80% at 295 nm after the introduction of HBPSi. These attractive features of PMMA‐HBPSi demonstrate that the new approach proposed here is suitable for developing high‐performance organic glasses for optical, aviation, and electronic applications.

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“…Polysiloxanes are materials with an inorganic Si–O–Si backbone and organic side groups. The Si–O bond has a substantially greater bond energy (462 kJ/mol) than the C–C bond (347 kJ/mol), demonstrating that it is more thermally stable than traditional carbon-based polymers, − and has been widely used in aerospace, automobile, medicine and health care, cosmetic additives, and so on. Traditional linear polysiloxane suffers from “back-biting” at high temperature, which limits its applications. − To improve the thermal stability of polysiloxane, rigid segments, such as carborane, were introduced into the polymeric structures to suppress the “back-biting” process and stabilize the structure.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Oxidation-Resistant Poly(Carborane-Silane) for Protective Coatings Under Harsh Environments

Sun

Kong

et al. 2022

ACS Appl. Polym. Mater.

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Thermal-oxidation-resistant polymers are critical for devices/components used under harsh environments where high temperature and an oxidative atmosphere lead to degradation and failure of polymeric parts. Herein, vinyl-containing poly(carboranesilane) (VCP) with good thermal-oxidative stability has been prepared through vinyl-modified m-carborane and silane. The cured VCP (c-VCP) could resist high temperature in both inert and oxidative atmospheres. In comparison to traditional carboranesiloxane copolymers, c-VCP aimed at lowering the oxygen content and simultaneously increasing the boron content, allowing maximum ability to capture oxygen atoms. In an oxidative atmosphere, the formation of the boron oxide layer brought nearly 45% weight gain rather than a weight decrease, which protected the matrix from thermal-oxidative degradation. The mechanism of thermal-oxidative degradation was also investigated based on Flynn− Wall−Ozawa method. The boron oxide layer increased the degradation activation energy (E a ) and hindered direct contact of inner materials with oxygen atoms. When the carbon fibers were coated with c-VCP, the char yield could be increased from 0 to 57 wt % at 1000 °C in air, which demonstrated that c-VCP coating could effectively protect carbon fiber from oxidation at high temperature in air, also indicating potential applications as anti-thermal-oxidative materials for harsh environments.

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Improvement in toughness and flame retardancy of bismaleimide/diallyl bisphenol A resin with a eugenol allyl ether-grafted polysiloxane

Cited by 15 publications

References 43 publications

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

Bismaleimide resins modified by a novel vanillin‐derived allyl compounds: Synthesis, curing behavior, and thermal properties

Poly(methyl methacrylate)/hyperbranched polysiloxane hybrid prepared by gamma‐radiation polymerization: Thermal stability, optical transparence, and UV shielding

Thermal-Oxidation-Resistant Poly(Carborane-Silane) for Protective Coatings Under Harsh Environments

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