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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Thermo-physical properties of short banana-jute fiber-reinforced epoxy-based hybrid composites
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Thermo-physical properties of short banana-jute fiber-reinforced epoxy-based hybrid composites

机译：香蕉短麻黄麻纤维增强环氧树脂基混杂复合材料的热物理性质

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摘要

The utilization of natural fiber-reinforced polymer composites is rapidly increasing in many industrial applications and fundamental research. In this work, short banana-jute fiber-reinforced epoxy-based hybrid composite was prepared by varying the fiber loading (0–40 wt.%) and different weight ratios of banana and jute fiber (1:1, 1:3, and 3:1). The physical and thermal properties such as density, water absorption, thermal conductivity, specific heat and thermal diffusivity were evaluated as per ASTM standards. A new micromechanical model was developed for evaluating the effective thermal conductivity of short fiber-reinforced hybrid composites by using the law of minimal thermal resistance and equal law of specific equivalent thermal conductivity. The thermal conductivity was calculated numerically by using the steady state heat transfer simulations. The proposed model and numerical results were validated with the experimental results and analytical methods existing in the literature. The effective thermal conductivity was predicted with the proposed model, and the finite element method is in good agreement with the experimental values and observed an acceptable range of 0–6.5% and 0–11% error, respectively. The results reveal that the composite made with banana and jute in the weight ratio of 1:3 shows minimum void content, water absorption, thermal conductivity, and thermal diffusivity at all fiber loadings. The fabricated hybrid composites were suitable for building components and automobiles in order to reduce the energy consumption.
机译：在许多工业应用和基础研究中，天然纤维增强聚合物复合材料的利用正在迅速增加。在这项工作中，通过改变纤维负载量（0–40％wt。％）和香蕉与黄麻纤维的不同重量比（1：1、1：3和3：1）。根据ASTM标准评估了物理和热学性质，例如密度，吸水率，热导率，比热和热扩散率。通过利用最小热阻定律和比当量热导率相等的定律，开发了一种新的微力学模型来评估短纤维增强混杂复合材料的有效热导率。通过使用稳态传热模拟来数值计算导热系数。通过文献中的实验结果和分析方法对所提出的模型和数值结果进行了验证。用所提出的模型可以预测有效的热导率，而有限元方法与实验值吻合得很好，并且可以看到可接受的误差范围分别为0-6.5％和0-11％。结果表明，由香蕉和黄麻制成的复合材料（重量比为1：3）在所有纤维负载下均显示出最小的孔隙率，吸水率，热导率和热扩散率。所制备的杂化复合材料适用于建筑部件和汽车，以减少能耗。

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