Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence
The curing of epoxy anhydride systems is often modelled using various phenomenological models. These models give a relationship between the cure rate and the temperature and degree of cure of the resin. Typically, epoxy anhydride systems are used in combination with an accelerator to lower the cure...
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Elsevier
2025-02-01
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| Series: | Polymer Testing |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941825000406 |
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| author | H. Möllers C. Schmidt D. Meiners |
| author_facet | H. Möllers C. Schmidt D. Meiners |
| author_sort | H. Möllers |
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| description | The curing of epoxy anhydride systems is often modelled using various phenomenological models. These models give a relationship between the cure rate and the temperature and degree of cure of the resin. Typically, epoxy anhydride systems are used in combination with an accelerator to lower the cure temperature and speed up the cure process. In this study, the influence of 2,4,6-Tris(dimethylaminomethyl)phenol (DMP) accelerator on the cure kinetics of a Bisphenol A diglycidyl ether (DGEBA or BADGE)-Methyltetrahydrophthalic anhydride (MTHPA) mixture was investigated using isothermal and dynamic modulated differential scanning calorimetry (MDSC) measurements. As expected, the accelerator increased the cure rate and lowered the reaction start temperature. The Kamal-Sourour model, incorporating a Fournier diffusion factor, was successfully fitted to the MDSC data. The Kamal-Sourour parameters indicate that the accelerator primarily affects the non-autocatalytic part of the reaction. Increasing the accelerator concentration also resulted in earlier vitrification of the resin up to 6 % degree of cure and 3–4% higher achievable cure degrees at isothermal temperatures. The effect of the accelerator was integrated into the Kamal-Sourour model, yielding a set of parameters that can be used to calculate the cure rate as a function of temperature, cure degree, and accelerator concentration with a mean error of 3.5 %. |
| format | Article |
| id | doaj-art-85eefbc97f87479ca04d2eab81b5a2c7 |
| institution | Kabale University |
| issn | 1873-2348 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj-art-85eefbc97f87479ca04d2eab81b5a2c72025-02-05T04:31:00ZengElsevierPolymer Testing1873-23482025-02-01143108726Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependenceH. Möllers0C. Schmidt1D. Meiners2Institute of Polymer Materials and Plastics Engineering, Clausthal University of Technology, Ottenbecker Damm 12, Stade, Germany; Corresponding author.Institute of Production Engineering and Machine Tools, Leibniz Universität Hannover, Ottenbecker Damm 12, Stade, GermanyInstitute of Polymer Materials and Plastics Engineering, Clausthal University of Technology, Agricolastr. 6, Clausthal-Zellerfeld, GermanyThe curing of epoxy anhydride systems is often modelled using various phenomenological models. These models give a relationship between the cure rate and the temperature and degree of cure of the resin. Typically, epoxy anhydride systems are used in combination with an accelerator to lower the cure temperature and speed up the cure process. In this study, the influence of 2,4,6-Tris(dimethylaminomethyl)phenol (DMP) accelerator on the cure kinetics of a Bisphenol A diglycidyl ether (DGEBA or BADGE)-Methyltetrahydrophthalic anhydride (MTHPA) mixture was investigated using isothermal and dynamic modulated differential scanning calorimetry (MDSC) measurements. As expected, the accelerator increased the cure rate and lowered the reaction start temperature. The Kamal-Sourour model, incorporating a Fournier diffusion factor, was successfully fitted to the MDSC data. The Kamal-Sourour parameters indicate that the accelerator primarily affects the non-autocatalytic part of the reaction. Increasing the accelerator concentration also resulted in earlier vitrification of the resin up to 6 % degree of cure and 3–4% higher achievable cure degrees at isothermal temperatures. The effect of the accelerator was integrated into the Kamal-Sourour model, yielding a set of parameters that can be used to calculate the cure rate as a function of temperature, cure degree, and accelerator concentration with a mean error of 3.5 %.http://www.sciencedirect.com/science/article/pii/S0142941825000406EpoxyAnhydrideCure kinetics |
| spellingShingle | H. Möllers C. Schmidt D. Meiners Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence Polymer Testing Epoxy Anhydride Cure kinetics |
| title | Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence |
| title_full | Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence |
| title_fullStr | Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence |
| title_full_unstemmed | Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence |
| title_short | Modelling the curing kinetics of DGEBA-MTHPA with DMP-accelerator concentration dependence |
| title_sort | modelling the curing kinetics of dgeba mthpa with dmp accelerator concentration dependence |
| topic | Epoxy Anhydride Cure kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S0142941825000406 |
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