Cure-volume-temperature relationships of epoxy resin and graphite/epoxy composites
Cure-volume-temperature relationships of epoxy resin and graphite/epoxy composites
复制标题
环氧树脂和石墨/环氧树脂复合材料的固化-体积-温度关系
DOI：
10.1016/j.polymer.2012.07.039
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发表时间：
2012-08
期刊：
影响因子：
4.6
通讯作者：
Li, Pan
中科院分区：
文献类型：
--
作者：
Wang, Chengguo;Jia, Yuxi;Luo, Ling;Li, Pan
考虑到聚合物复合材料的热膨胀和固化收缩，定量得到了常压下固化度、体积变化率与温度（CVT）之间的关系。根据反应动力学和非线性变形理论，建立数学模型，隐式描述环氧树脂及其单向石墨纤维复合材料固化过程中的CVT关系，并通过有限元方法得到两种材料固化过程中的体积变化率。在数值分析和数据拟合的基础上，构造了两个新的CVT显式表达式。固化-体积-温度关系的数值分析不仅有助于预测材料的翘曲变形和内应力，而且有助于工艺优化，如聚合物复合材料的收缩补偿。通过与已发表的文献结果的比较，间接证明了本文结果的有效性。
Taking the material thermal expansion and curing shrinkage in polymer composites into account, this work aims to quantitatively obtain the relationships among the degree of cure, the volumetric change rate and the temperature (CVT) at the atmospheric pressure. According to reaction kinetics and nonlinear deformation theory, the mathematical models are established to implicitly describe the CVT relationships of epoxy resin as well as its unidirectional graphite fiber composites, and then the volumetric change rates of the two types of materials during curing process are obtained via the finite element method. On the basis of the numerical analysis and data fitting, two new explicit CVT expressions are constructed. The numerical analysis of the cure-volume-temperature relationships is helpful not only for the prediction of material warpage and internal stress, but also for the process optimization, such as the shrinkage compensation of polymer composites. By comparing the present results with the results in published articles, the validity of the present results is proven indirectly.
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影响因子：
9.1
作者：
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通讯作者：
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影响因子：
5.2
作者：
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