Processability improvement of a 4-vinlyguiacol derived benzoxazine using reactive diluents

Lou, Y.; Zhao, Zhongxiang; Chen, Zhiwei; Dai, Zenghui; Fu, Feiya; Zhang, Yanyan; Zhang, Lei; Liu, Xiangdong

doi:10.1016/j.polymer.2018.11.056

Cited by 19 publications

(12 citation statements)

References 57 publications

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“…Water was also used as a processing aid for benzoxazine composite preparation, but before curing, water still need to be removed from the system [33]. Another approach to lower the melting point of benzoxazine resin is introducing flexible chain [36][37][38] or functional group [39] into benzoxazine structure, but the improvement of processability is obtained at the sacrifice of the mechanical and thermal properties to some extent. Hence design and preparation of benzoxazine monomer with a low melting point but without decreasing its properties is a current challenge.…”

Section: Introductionmentioning

confidence: 99%

Low melting point, high thermal stable branched benzoxazines resin derived from mixed-substituted phosphazene core

Ma¹,

Qiu²,

Liu³

2020

Express Polym. Lett.

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Six fluorine-containing, mix-substituted phosphazene-based branched benzoxazine monomers with a low melting point were successfully prepared and their chemical structures were verified by 1 H, 13 C, 31 P and 19 F nuclear magnetic resonance (NMR). These branched benzoxazine resins underwent thermal ring-opening polymerization to form cured polymers with high thermal stability both in N 2 atmosphere and in air. The co-substituents, both m-CF 3 PhOH and p-CF 3 PhOH, imposed significant effects on processing, thermal, and surface properties of corresponding polybenzoxazines. Non-isothermal differential scanning calorimetry (DSC) under diverse heating rates was adopted to investigate the curing kinetics and determine the activation energy of polymerization. DSC results indicate that the m-CF 3 PhO-/p-CF 3 PhO-groups have the potential to lower ring-opening polymerization temperature. Glass transition temperatures (T g s) of polybenzoxazines derived from p-CF 3 PhOH are higher than that of polymers derived from m-CF 3 PhOH due to different steric hindrance and crosslinking density. More interesting, all polybenzoxazines show relatively high dielectric constant but exhibit low dielectric loss at ambient temperature.

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Section: Introductionmentioning

confidence: 99%

Low melting point, high thermal stable branched benzoxazines resin derived from mixed-substituted phosphazene core

Ma¹,

Qiu²,

Liu³

2020

Express Polym. Lett.

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show abstract

“…[148][149][150][151] The simultaneous usage of renewable phenols and amines can further reduce the dependence on petroleum resources and improve resin's bio-based content. Several research groups designed benzoxazine monomer using different monophenol, including eugenol, vanillin, guaiacol, arbutin, sesamol and phloretic acid, combined with furfurylamine, Other than some special application such as reactive diluent, 152 due to the poor properties of monofunctional resins, most of the existing studies are only feedstocks exploration, structural combination, or concept demonstration. For example, a series of monobenzoxazine were prepared using different renewable monophenols only for performance comparison.…”

Section: High Performance Bio-based Benzoxazine Resinmentioning

confidence: 99%

Recent development on bio‐based thermosetting resins

Liu

Zhang

Shun

et al. 2021

Journal of Polymer Science

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Due to the rapid depletion of crude oil and serious environmental pollution, the synthesis of polymers from renewable resource is becoming more and more important. Up to now, a great variety of biomass and bio-based platform compounds have been taken to prepare the polymers. However, as two representative thermosetting resins, epoxy and benzoxazine resin derived from renewable feedstocks only obtain limited attention compared with the popular bio-based plastics, including PLA, PBAT and PHBV etc. The reason might be that the properties of previously reported thermosetting resins directly obtained from biomass are usually unsatisfied, and their application fields are limited. In this paper, the latest development on the synthesis of highperformance bio-based epoxy and polybenzoxazine resins are reviewed. In addition, to further broaden their applications, the functionalization strategies are also summarized. The objective of this work is to help us fully aware the present situation of bio-based thermosetting resins and then promote their faster development, especially practical application.

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“…Thus, along with developing modifiers that improve mechanical, thermal and flame retardant properties, it is of great importance to search for viscosity regulator components that allow us to control the technological properties of benzoxazine resins without deteriorating the performance characteristics of polymer [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Benzoxazine Copolymers with Mono- and Difunctional Epoxy Active Diluents with Enhanced Tackiness and Reduced Viscosity

et al. 2021

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The influence of epoxy active diluents, 1,4-butanediol diglycidyl ether (BD) and furfuryl glycidyl ether (FUR), in the mixtures with benzoxazine monomer based on bisphenol A, formaldehyde and m-toluidine (BA-mt), on the properties of a matrix was disclosed in this work. Resins were modified to achieve good tackiness at room temperature and reduced viscosity. The influence of mono- and difunctional modifiers on the process of curing was studied by way of differential scanning calorimetry and oscillatory rheology. The addition of BD and FUR shifted the curing peak to higher temperatures and significantly reduced viscosity. Preferable tackiness at ambient temperature was achieved with 10 phr of epoxy components in mixtures. However, cured blends with difunctional epoxy BD had an advantage over monofunctional FUR in enhanced tensile strength with remaining glass transition temperature at the level of neat benzoxazine (217 °C).

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Processability improvement of a 4-vinlyguiacol derived benzoxazine using reactive diluents

Cited by 19 publications

References 57 publications

Low melting point, high thermal stable branched benzoxazines resin derived from mixed-substituted phosphazene core

Low melting point, high thermal stable branched benzoxazines resin derived from mixed-substituted phosphazene core

Recent development on bio‐based thermosetting resins

Benzoxazine Copolymers with Mono- and Difunctional Epoxy Active Diluents with Enhanced Tackiness and Reduced Viscosity

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