Experimental Determination and Modeling of Transformation Kinetics

Boyard, Nicolas; Bailleul, Jean‐Luc; Boutaous, Mhamed

doi:10.1002/9781119116288.ch3

Cited by 3 publications

(3 citation statements)

References 105 publications

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“…It is clear that the crystallization peak for paraffin wax become broader and shift to lower temperature with increase in the cooling rate. When the samples were cooled quickly, the motion of the paraffin wax molecules could not follow the cooling rate and as a consequence more supercooling was required to initiate crystallization [36][37][38]. The findings indicate that the lower the cooling rate, the sooner crystallization occurred i.e.it begins at higher temperature since paraffin chains have enough time to overcome nucleation energy barrier.…”

Section: Differential Scanning Calorimetry (Dsc) Testingmentioning

confidence: 99%

Non-isothermal crystallization kinetics of paraffin wax as a phase changing energy storage material

et al. 2020

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Paraffin waxes are becoming increasingly attractive especially on thermal energy storage field. The crystallization process, considered as a major thermal discharging approach, has a significant impact on the thermal performances of paraffin wax. This study aims to comprehend the mechanism of paraffin wax crystallization under non-isothermal conditions by means of Differential Scanning Calorimetry (DSC). Jeziorny and Mo models were applied to reveal the morphology of paraffin wax crystals. Moreover, the non-isothermal crystallization activation energy was calculated through Kissinger and Friedman methods, respectively. Investigations show that the used kinetics models gratifyingly fitted the experimental data, providing crystallization kinetic parameters such as crystallization rate, half-life time (t1/2) as well as the required cooling rate for a designated relative crystallinity. Furthermore, it was found that the average Avrami exponent value is close to 2 which indicates that the crystals are one-dimensional with needle-like morphologies.

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Section: Differential Scanning Calorimetry (Dsc) Testingmentioning

confidence: 99%

Non-isothermal crystallization kinetics of paraffin wax as a phase changing energy storage material

et al. 2020

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“…approach is then enough to be able to reach the polymerization and thermal behavior of the resin during the filling and curing phases. From the literature two mathematical models seem to be adapted to model the resin kinetics [4,5]. First, the polynomial form of Bailleul [5], coupled with an Arrhenius law (Eq.…”

Section: Modeling and Infusion Simulationsmentioning

confidence: 99%

“…From the literature two mathematical models seem to be adapted to model the resin kinetics [4,5]. First, the polynomial form of Bailleul [5], coupled with an Arrhenius law (Eq. 1).…”

Section: Modeling and Infusion Simulationsmentioning

confidence: 99%

Thermo-chemical modeling and simulation of glass/elium® acrylic thermoplastic resin composites

Denis

2023

Materials Research Proceedings

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Abstract. The recyclability limitations of wind blades significantly reduce their environmental benefit as a green energy source. Therefore, the use of new and sustainable materials is crucial. The Zero wastE Blade ReseArch project (ZEBRA), led by the French technical research center IRT Jules Verne, is looking to accelerate the industry transition to circular economy by designing and manufacturing the first 100% recyclable wind blades using the thermoplastic resin Elium®, developed by Arkema, with a consortium regrouping: LM Wind Power, Arkema, CANOE, Owens Corning, ENGIE and Suez. In this work, the polymerization kinetics of the reactive thermoplastic resin Elium® was characterized through isothermal and dynamic Differential Scanning Calorimetry (DSC) tests. The experimental curves are fitted to two different models from the literature; then the model parameters are identified and used as input to simulations. One model is selected and evaluated using a PAM-RTM© simulation for pure resin and the infusion of Owens Corning glass/Elium® composites [1]. The numerical results are compared with experimental data collected from Vacuum-assisted resin infusion (VARI) tests with the help of a robust monitoring system [2]. Then the model is used to predict the flow and polymerization behavior for thick and more complex parts.

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Modeling heat transfer and transcrystallization kinetics during processing of polymer‐based composites materials

Bigot

Boutaous

Xin

et al. 2022

Polymers for Advanced Techs

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Transcrystallization phenomena is a key issue to master for better understanding the role on the fiber‐matrix interface in composites materials behavior during and after processing. In this paper, a non‐isothermal kinetics model is presented to consider crystallization in fiber‐based composite with thermoplastic matrix. The model extends Schneider's formulation to describe the development of transcrystalline layers around fibers. It also mentions the possibility to easily account for shear and flow conditions in addition to the transcrystallinity. Another approach, based on the volume fractions, giving the same results, is also introduced for comparison. Then, a parametric study is proposed in order to demonstrate the relevance of the developed model by comparing its results to well‐known expecting behavior from the literature. Finally, an attempt is made to compare this model to the one proposed previously in the literature by Durin and al. after correcting some unclear points in the latter.

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Experimental Determination and Modeling of Transformation Kinetics

Cited by 3 publications

References 105 publications

Non-isothermal crystallization kinetics of paraffin wax as a phase changing energy storage material

Non-isothermal crystallization kinetics of paraffin wax as a phase changing energy storage material

Thermo-chemical modeling and simulation of glass/elium® acrylic thermoplastic resin composites

Modeling heat transfer and transcrystallization kinetics during processing of polymer‐based composites materials

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