Reaction model and cure kinetics of fiber-reinforced phenolic system

Liang, Qun; Hou, Xiao; Feng, Xiao; Zhang, Kun; Li, Jian

doi:10.1007/s10409-022-22081-2

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…On the other hand, the performance of phenloic resin is related to their thermal behavior and properties. Although the curing behaver and kinetics of novolac have been extensively studied, 24–26 it is benefited to further understand its thermal degradation mechanism and kinetics. Previous work have demonstrated that boride could be effectively incorporated into novolac to improve the thermal resistance and increase the char yield due to the strong BO bond and impenetrable glassy coating which is formed when novolac is thermally degraded under thermal treatment 19,27–28 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, thermal stability, and degradation kinetics of a novel boron‐containing novolac based on triphenyl borate

Huang,

Zhai,

Lai

et al. 2024

Int J of Chemical Kinetics

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A novel boron‐containing novolac (triphenyl borate‐formaldehyde resin, TPBF) was synthesized. The structure, thermoplasticity, molecular weight, and molecular weight distribution of TPBF have been characterized with FT‐IR, melt viscosity, 13C NMR and GPC. The thermal stability of TPBF was investigated by TGA, indicating the thermal stability of TPBF was much better than that of normal novolac (phenol‐formaldehyde resin, PF). TPBFs with different molar ratios of formaldehyde to benzene ring in triphenyl borate (TPB) were also synthesized and compared for molecular size, polydispersity and thermal stability. Further, the thermal degradation kinetics of TPBFs and PF were studied by TGA using Madhusdanan‐Krishnan‐Ninan method and the activation energies were calculated at different degradation stages. It was found that the thermal degradations of TPBFs and PF are a multistage reaction and the degradation reactions in every stage follow the first order reaction mechanism. Finally, the activation energies of thermal degradations of novolac increase with the introduction of boron, the progress of degradation reaction as well as the increase of molar ratios.

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Section: Introductionmentioning

confidence: 99%

Synthesis, thermal stability, and degradation kinetics of a novel boron‐containing novolac based on triphenyl borate

Huang,

Zhai,

Lai

et al. 2024

Int J of Chemical Kinetics

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“…Vafayan et al [21] studied the curing reaction of epoxy prepreg by using advanced model-free, semi-model fitting, and model-fitting methods to fit the DSC data, and gave an optimal fitting by the advanced model-free method. Liang et al [22] studied the curing kinetics of neat phenolic (PF) resin and its prepreg by dynamic DSC experiments, and they reported the lower E a value of prepreg compared with neat resin since the fibers could improve the heat conduction.…”

Section: Introductionmentioning

confidence: 99%

Cure Kinetics of a Carbon Fiber/Epoxy Prepreg by Dynamic Differential Scanning Calorimetry

Chen

Zhu

Zhao

et al. 2023

International Journal of Polymer Science

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Investigating the curing kinetics of a fiber prepreg system is beneficial to the controlling of prepreg laminate curing process. In the present work, a dicyandiamide (DICY)-cured carbon fiber/epoxy prepreg system was investigated by non-isothermal differential scanning calorimetry (DSC) at 2, 5, 10, and 20°C/min to attain the glass transition temperature for uncured prepreg and fully cured sample, which were estimated to be 7.6°C and 106.2°C, respectively. The activation energy (Ea) of the prepreg system was evaluated by Kissinger and Ozawa methods, and Friedman method was also employed to reveal the evolution of Ea as a function of curing degree. The kinetic parameters were determined by fitting the average Ea value obtained by Friedman method into Málek methodology, and the two parameters Šesták–Berggren model was found to best describe the curing kinetic of the prepreg system. The preexponential factor was calculated to be 6.0 × 10 8 min−1, with the overall reaction order at nearly 2.5. The prediction curves, based on Friedman method and autocatalytic model, were in good agreement with the experimental data.

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三维c/C复合材料烧/剥蚀行为的机械剥蚀细观模型

Yang,

Jing,

et al. 2023

Acta Mech. Sin.

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Reaction model and cure kinetics of fiber-reinforced phenolic system

Cited by 6 publications

References 40 publications

Synthesis, thermal stability, and degradation kinetics of a novel boron‐containing novolac based on triphenyl borate

Synthesis, thermal stability, and degradation kinetics of a novel boron‐containing novolac based on triphenyl borate

Cure Kinetics of a Carbon Fiber/Epoxy Prepreg by Dynamic Differential Scanning Calorimetry

三维c/C复合材料烧/剥蚀行为的机械剥蚀细观模型

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