Tufail Muhammad Rizwan, Jamshaid Hafsa, Mishra Rajesh, Hussain Uzair, Tichy Martin, Muller Miroslav
Faculty of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan.
Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Kamycka 129, 165 00 Prague 6-Suchdol, Czech Republic.
Polymers (Basel). 2021 Jul 13;13(14):2291. doi: 10.3390/polym13142291.
In the present work, hybrid composites were developed by using polyester waste fibers along with natural origin materials: olive root fibers and coir pitch filler. Such composite panels can be used as a potential alternative for fiber glass sunshade panels and room dividers in buildings. Hybrid composites were fabricated by mixing polyester waste fibers and olive root fibers in different ratios (0:100, 33:67, 67:33 and 100:0). Coir pith micro-particles with an average size of 312 d.nm were used as filler in the polyester matrix at three different levels (0%, 5%, and 10%) of the overall matrix weight. Mechanical properties, e.g., tensile strength, flexural strength and impact strength, thermal properties, e.g., coefficient of linear thermal expansion, thermo-gravimetric analysis (TGA) and environmental properties, e.g., water absorption, loss of density after exposure to weathering were characterized. For comparison purposes, a commercially available fiber glass sunshades sample was also investigated. Mixture design analysis was used to optimize the ratio of all components in the composite. Graphical comparison of experimental results using regression models showed a high degree of correlation. An optimized formulation of composite with an objective of maximization of tensile strength, flexural strength, impact strength and minimization of water absorption, density loss, as well as coefficient of linear thermal expansion, was determined at 70.83 wt%, 15.15 wt%, and 14.01 wt% of polyester waste fibers, olive root fibers and coir pith micro-fillers, respectively. Overall, it can be concluded that the developed hybrid composites from waste fibrous materials can be used as a promising alternative and a value-added application in buildings and construction purposes.
在本研究中，通过使用聚酯废纤维以及天然原料：橄榄根纤维和椰壳髓填料，制备了混杂复合材料。这种复合板可作为建筑中玻璃纤维遮阳板和室内隔断的潜在替代品。通过将聚酯废纤维和橄榄根纤维按不同比例（0:100、33:67、67:33和100:0）混合来制备混杂复合材料。平均尺寸为312 d.nm的椰壳髓微粒被用作聚酯基体中的填料，占整个基体重量的三个不同水平（0%、5%和10%）。对其力学性能，如拉伸强度、弯曲强度和冲击强度，热性能，如线性热膨胀系数、热重分析（TGA）以及环境性能，如水吸收、暴露于风化后的密度损失进行了表征。为作比较，还研究了一个市售的玻璃纤维遮阳板样品。采用混合设计分析来优化复合材料中所有组分的比例。使用回归模型对实验结果进行图形比较显示出高度的相关性。确定了一种优化配方的复合材料，其目标是使拉伸强度、弯曲强度、冲击强度最大化，以及使水吸收、密度损失和线性热膨胀系数最小化，其中聚酯废纤维、橄榄根纤维和椰壳髓微填料的含量分别为70.83 wt%、15.15 wt%和14.01 wt%。总体而言，可以得出结论，由废弃纤维材料开发的混杂复合材料可作为建筑和施工用途中有前景的替代品和增值应用。
