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Erschienen in: Polymer Bulletin 8/2023

21.09.2022 | Original Paper

A new diffusion-control model based on the power law distribution for the cure kinetics of epoxy-anhydride thermoset resins

verfasst von: Kun Wang, Xin Chen, Yongguang Yu, Chong Zhang, Guojian Ren, Wei Yang, Jian Qiao, Yun Chen, Li Yin, Bingyue Yan

Erschienen in: Polymer Bulletin | Ausgabe 8/2023

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Abstract

In this study, a new theoretical model is developed to describe the effect of diffusional limitations on the cure kinetics of epoxy-anhydride resins based on the free volume theory. Different from the previous models, a new diffusion factor is developed by introducing the power law to describe the average distribution of free volume, in which, a fractional exponent related to the power law distribution is established to describe the effect of diffusion. The fractional exponent is verified to be actually temperature dependent by using experimental data. Then, a new diffusion-control model is obtained by modifying Kamal’s autocatalytic model with the new diffusion factor. Finally, the isothermal cure data were fitted with the new model very well. The resultant kinetic model can describe the autocatalytic reaction as well as diffusion-limited regimes, and also the temperature-dependent ultimate conversion.

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Metadaten
Titel
A new diffusion-control model based on the power law distribution for the cure kinetics of epoxy-anhydride thermoset resins
verfasst von
Kun Wang
Xin Chen
Yongguang Yu
Chong Zhang
Guojian Ren
Wei Yang
Jian Qiao
Yun Chen
Li Yin
Bingyue Yan
Publikationsdatum
21.09.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 8/2023
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-022-04462-1

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