采用实验和模拟技术研究了各向同性导电胶粘剂材料的老化现象

2016 17th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE) Pub Date : 2016-05-05 DOI:10.1109/EUROSIME.2016.7463346

O. Holck, M. van Dijk, J. Bauer, H. Walter, O. Wittler, K. Lang

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引用次数: 0

摘要

在这项工作中，我们提出了一种评估材料性能随时间变化的方法，这种变化是由于各向同性导电胶粘剂的高温老化造成的。通过分子动力学模拟研究了具有相似初级化学性质的环氧树脂的分子模型。通过交联密度的变化，研究了老化(后固化)对水分子扩散率和环氧树脂基体自由体积的影响。在一个简单的复合材料子模型中，通过与实验结果的比较，讨论了结果在有限元模拟中的可移植性及其有效性。

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Ageing phenomena in isotropic conductive adhesive material investigated by experimental and simulation techniques

In this work we present our results of an approach to assess material property changes with time due to high temperature ageing in an isotropic conductive adhesive. A molecular model of an epoxy with similar primary chemistry is investigated by molecular dynamics simulations. By variation of crosslink density, one supposed effect of ageing (post-curing) is investigated with respect to its impact on diffusivity of water molecules and the free volume of the epoxy matrix. In a simple submodel of a composite material, the portability of the results into FE simulations and their validity are discussed by comparison to experimental results.

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2016 17th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE)

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