题目：Analysis on the ultraviolet curing process of resin-based glass fiber composites based on finite element mesoscale model（基于有限元中尺度模型的树脂基玻璃纤维复合材料紫外光固化过程分析）
作者：Yue Jiang; Jiazhong Xu; Meijun Liu; Tianyu Fu
期刊名：Journal of Applied Polymer Science
影响因子：2.7
中科院期刊分区：SCI二区
DOI：10.1002/app.55358
收录年份：2024
摘要：由紫外线辐射引发的树脂固化方法具有许多优点，包括快速、低成本和最小的环境影响。由于介质对光传播的阻碍，在底部可能经常发生不均匀固化或不完全固化，特别是当材料厚度过大时。为了解决这些问题并深入研究光固化过程的规律，本研究采用纤维束和树脂基体分别表示的建模方法，构建了树脂基玻璃纤维增强复合材料玻璃纤维增强聚合物（GFRP）的中尺度模型。基于光传播模型、光固化动力学模型和热传导模型，建立了GFRP光固化过程的多物理场解耦模型。利用该模型，模拟了玻璃钢固化过程中内部光场、固化度场和温度场的时空变化。分析了这些变化的机理。最后，结合基于宏观模型的规律性分析，通过实验验证了模型的准确性和得到的规律性。这为研究树脂基纤维增强复合材料的光固化过程提供了一种有效的分析方法。
Abstract:The resin curing process triggered by ultraviolet radiation possesses numerous advantages, including rapid speed, low cost, and minimal environmental impact. Due to the hindrance of light propagation by the medium, uneven cur-ing or incomplete curing at the bottom may occur frequently, particularly when the material thickness is excessive. To address these issues and delve into the regularities of the light-curing process, this study employed a model-ing approach that separately represents fiber bundles and the resin matrix to construct a mesoscopic model of the resin-based glass fiber-reinforced compos-ite material glass fiber reinforced polymer (GFRP). Based on the models of light propagation, light-curing kinetics, and heat conduction, a multiphysics field decoupling model is established to simulate the light-curing process of GFRP. Using this model, the temporal and spatial variations of the internal light field, degree of curing field, and temperature field within GFRP during the curing process are simulated. The mechanistic reasons for these variations are analyzed. Finally, in conjunction with the regular analysis based on the macroscopic model, the accuracy of the model and the obtained regularities are validated through experiments. This provides an effective analytical method for the study of light-curing in resin-based fiber-reinforced composite materials.
模型构建及实验设计
光场、温度场、固化度分布情况