Murčinková Zuzana, Postawa Przemysław, Winczek Jerzy
Department of Design and Monitoring of Technical Systems, Faculty of Manufacturing Technologies with Seat in Prešov, Technical University of Košice, Bayerova 1, 080 01 Prešov, Slovakia.
Department of Technology and Automation, Częstochowa University of Technology, Al. Armii Krajovej 19C, 42-201 Częstochowa, Poland.
Polymers (Basel). 2022 Jul 28;14(15):3060. doi: 10.3390/polym14153060.
In this paper, we present an extensive experimental study on the dynamic mechanical properties of composites with polymer matrices, as well as a quantification of the parameters that influence these properties. Polymer-composite matrices make it possible to form any reinforcement arrangement of fibres, particles, and layers, which makes it possible to form composite materials with certain dominant mechanical properties according to the internal arrangement for the application. In this study, we focused on the dynamic properties (i.e., damping parameters, such as the loss factor (tan ), logarithmic decrement (), storage modulus ('), and loss modulus (″)) of composites with polymer matrices, including parameters such as the fibre material, fabric weaving, fibre orientation, temperature, frequency, particle size, volume of short fibres, and epoxy resin type. If other articles focus on one type of composite and 1-2 parameters, then the benefit of this article lies in our analysis of 8 mentioned parameters in the experimental analysis of 27 different types of composites with polymer matrices. The tested fibre materials were glass, aramid, and carbon; the tested woven fabrics were twill, plain, unidirectional, and satin; the temperature range was from -50 to +230 °C; the frequency was 1 Hz and 10 Hz; the particle size was 0.1-16 mm; the volume percentages of the short fibres were 3, 6, and 12 vol.% of the hybrid polymer composites and the type of polymer matrix. We used the free-damped-vibration method with vibration dynamic signal analysis and the forced-damped vibration of dynamic mechanical thermal analysis for testing. We ranked the parameters that influence the dynamic vibration properties according to the effects. Among sets of results provided in the paper, considering the storage modulus, loss modulus, and loss factor, the best results of the fibre composites were for aramid-fibre-reinforced polymers, regardless of the weave type, with an advantage for unidirectional fabric. The best results of the particle composites were for those with fine filler sizes that incorporated the short fibres.
在本文中，我们对聚合物基复合材料的动态力学性能进行了广泛的实验研究，并对影响这些性能的参数进行了量化。聚合物 - 复合材料基体能够形成纤维、颗粒和层的任何增强排列方式，这使得根据内部排列形成具有特定主导力学性能的复合材料以用于实际应用成为可能。在本研究中，我们重点关注了聚合物基复合材料的动态性能（即阻尼参数，如损耗因子（tanδ）、对数衰减率（δ）、储能模量（E'）和损耗模量（E''）），包括纤维材料、织物编织方式、纤维取向、温度、频率、颗粒尺寸、短纤维体积和环氧树脂类型等参数。如果其他文章聚焦于一种类型的复合材料及1 - 2个参数，那么本文的优势在于我们在对27种不同类型的聚合物基复合材料进行实验分析时，对上述8个参数进行了分析。测试的纤维材料有玻璃纤维、芳纶纤维和碳纤维；测试的机织物有斜纹、平纹、单向和缎纹；温度范围为 - 50至 + 230°C；频率为1Hz和10Hz；颗粒尺寸为0.1 - 16mm；短纤维的体积百分比为杂化聚合物复合材料的3%、6%和12%（体积分数）以及聚合物基体的类型。我们采用自由阻尼振动法结合振动动态信号分析以及动态热机械分析中的强迫阻尼振动进行测试。我们根据影响程度对影响动态振动性能的参数进行了排序。在本文给出的几组结果中，考虑储能模量、损耗模量和损耗因子，无论编织类型如何，芳纶纤维增强聚合物的纤维复合材料效果最佳，单向织物具有优势。颗粒复合材料的最佳结果是那些含有细填料尺寸并掺入短纤维的材料。
