A cure modelling study of an unsaturated polyester resin system for the simulation of curing of fibre-reinforced composites during the vacuum infusion process
A cure modelling study of an unsaturated polyester resin system for the simulation of curing of fibre-reinforced composites during the vacuum infusion process
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DOI：
10.1177/0021998314549820
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发表时间：
2015-08-01
影响因子：
2.9
通讯作者：
Shenoi, R. A.
中科院分区：
文献类型：
--
作者：
Aktas, A.;Krishnan, L.;Shenoi, R. A.
本文研究了常温固化不饱和聚酯（UP）树脂体系在真空灌注（VI）工艺中的固化动力学和固化模型。采用差示扫描量热法（DSC）研究了不饱和聚酯树脂体系的固化过程。进行动态DSC测试测量以找出最终反应热，并使等温固化的实验转化率确定成为可能。经验的自催化固化动力学模型，结合阿罗修斯定律代表的固化行为。固化动力学研究结果、固化模型、材料性能和边界条件是PAM-RTM软件的输入，用于模拟灌注和室温固化阶段的固化度和放热温度。模拟结果与实验测量数据进行了比较。进行涉及非卷曲玻璃纤维预成型件的真空灌注（VI）实验，以使用热电偶监测固化并验证温度模拟结果。结果表明，通过本研究的步骤可以预测室温固化热固性树脂体系在VI过程中的固化度和放热温度。
This study presents the cure kinetics and cure modelling of an ambient curing unsaturated polyester (UP) resin system for its cure simulation in the vacuum infusion (VI) process. The curing of the UP resin system was investigated using differential scanning calorimetry (DSC). The dynamic DSC test measurements were conducted to find out the ultimate heat of reaction and enable experimental conversion determination for the isothermal curing. The empirical autocatalytic cure kinetics model incorporating the Arrhenius law represented the cure behaviour. The results of the cure kinetics study, the cure model, the material properties and the boundary conditions were the inputs in PAM-RTM software for the simulation of the degree of cure and the exothermic temperature during the infusion and the room temperature curing stages. The simulation results were compared with experimentally measured data. A vacuum infusion (VI) experiment involving a non-crimp glass fibre preform was performed in order to monitor the curing using thermocouples and validate the temperature simulation result. It was shown that the degree of cure and the exothermic temperature of a room temperature curing thermoset resin system during the VI process could be predicted through the steps of this study.