Thermal models for MTM45-1 and Cycom 5320 out-of-autoclave prepreg resins
Thermal models for MTM45-1 and Cycom 5320 out-of-autoclave prepreg resins
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DOI：
10.1177/0021998312440131
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发表时间：
2013-02-01
影响因子：
2.9
通讯作者：
Hubert, Pascal
中科院分区：
文献类型：
--
作者：
Kratz, James;Hsiao, Kevin;Hubert, Pascal
非高压釜预浸料需要两步固化周期。第一步是低温固化，以巩固层压板并建立足够的生坯强度，以进行第二步，即在传统高压釜温度下进行独立式后固化，以使树脂完全交联。工艺建模可以帮助设计稳健的固化周期，以避免在生产中报废大型零件。本文的重点是开发两种市售非高压釜环氧树脂的固化动力学、粘度和玻璃化转变温度模型。由于固化动力学模型是所有其他热模型的基础，因此使用厚预浸料层压板的一维传热分析来验证固化动力学模型。最后，将非热压罐树脂模型与传统热压罐树脂系统进行比较，以突出非热压罐加工的树脂反应性差异。
Out-of-autoclave prepregs require a two-step cure cycle. The first step is a low temperature cure to consolidate the laminate and build sufficient green strength to proceed to the second step, a free-standing post-cure at traditional autoclave temperatures to fully cross-link the resin. Process modeling can help design a robust cure cycle to avoid scrapping large parts in production. The focus of this article is to develop the cure kinetics, viscosity, and glass transition temperature models for two commercially available out-of-autoclave epoxy resins. Since the cure kinetics model is the basis for all other thermal models, the cure kinetics model was validated using a one-dimensional heat transfer analysis on thick prepreg laminates. Finally, the out-of-autoclave resin models were compared to a traditional autoclave resin system to highlight the difference in resin reactivity for out-of-autoclave processing.