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Processing maps based on polymerization modelling of thick methacrylic laminates
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DOI：10.1016/j.matdes.2020.109170.png)
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摘要
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Control of the in-situ polymerization of thick methacrylic laminates is essential to minimize cavitation due to monomer boiling. To this end, a computationally efficient thermochemical model is developed to predict the temperature and degree of monomer conversion during polymerization of a methyl methacrylate (MMA)based resin in a fibrous preform. The model couples the self-accelerating exothermic free-radical bulk polymerization of MMA (gel effect) with the heat transfer within the preform and to the environment. The predicted temperature profiles are in excellent agreement with experimental data measured during a series of in-situ polymerization tests with different heating conditions and preform thicknesses. Processing diagrams are constructed to reveal the regimes of interest for the production of thick fiber-reinforced methacrylic composites without voids induced by monomer boiling. (c) 2020 The Author(s). Published by Elsevier Ltd.
Keyword:
Polymer-matrix composite
Thermoplastic resin
Methyl methacrylate
Polymerization kinetics
Process monitoring
Thermochemical model
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7.9
论文数:
1.9W
被引数:
9.8W
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