Dessalegn Yalew, Singh Balkeshwar, Vuure Aart W van, Rajhi Ali A, Duhduh Alaauldeen A, Hossain Nazia, Ahmed Gulam Mohammed Sayeed
Program of Mechanical Design and Manufacturing Engineering, Department of Mechanical Engineering, Adama Science and Technology University, Adama 1888, Ethiopia.
Department Materials Engineering, Campus Group T, Composite Materials Group, KU Leuven, Andreas Vesaliusstraat 13, 3000 Leuven, Belgium.
Polymers (Basel). 2022 Jul 4;14(13):2733. doi: 10.3390/polym14132733.
The current studies aim to measure the mechanical strength based on age, harvesting season and bamboo species in Ethiopia. The bamboo fibres are extracted using a roll milling machine, which was developed by the author. The age groups (1, 2 and 3 years), harvesting months (February and November), and bamboo species (Yushania alpina and Bambusa oldhamii) are the parameters of the current research studies. Prepregs and composites were produced from bamboo fibres and polypropylene. The mechanical properties of bamboo fibres and their composites in Ethiopia have not been investigated by researchers for the composite application so far. The tensile strength, Young's modulus, and impact strength of injibara (Y. alpina) bamboo fibres reinforced PP composites from the ages of 1- 3 years old in November is 111 ± 9-125 ± 8 MPa, 15 ± 0.9-25 ± 0.72 GPa, and 47 ± 5 KJ/m-57 ± 6 KJ/m, whereas, in February, it is 86 ± 3.86-116 ± 10 MPa, 11 ± 0.71-23 ± 1.5 GPa, and 34 ± 4-52 ± 6 KJ/m, respectively. Moreover, Kombolcha (B. oldhamii), bamboo fibres reinforced PP composites in November are 93 ± 7-111 ± 8 MPa, 7 ± 0.51-17 ± 2.56 GPa, and 39 ± 4-44 ± 5 KJ/m, whereas, in February, it is 60 ± 5-104 ± 10 MPa, 12 ± 0.95-14 ± 0.92 GPa, and 26 ± 3 KJ/m-38 ± 4 KJ/m, respectively. Furthermore, Mekaneselam (Y. alpina) bamboo fibres reinforced PP composites in November are 99 ± 8-120 ± 11 MPa, 9 ± 0.82-16 ± 1.85 GPa, and 37 ± 4 KJ/m-46 ± 5 KJ/m, whereas, in February, it is 91 ± 8-110 ± 9 MPa, 8 ± 0.75-14 ± 1.86 GPa, and 34 ± 3 KJ/m-40 ± 4 KJ/m, respectively. At two years, November and Injibara bamboo have recorded the highest mechanical properties in the current research studies. Bamboo fiber strength in Ethiopia is comparable to the previous study of bamboo fibres and glass fibres used for composite materials in the automotive industry.
当前的研究旨在测量埃塞俄比亚基于年龄、收获季节和竹种的机械强度。竹纤维是使用作者开发的辊磨机提取的。年龄组（1年、2年和3年）、收获月份（2月和11月）以及竹种（玉山箭竹和绿竹）是当前研究的参数。预浸料和复合材料由竹纤维和聚丙烯制成。迄今为止，研究人员尚未对埃塞俄比亚竹纤维及其复合材料在复合材料应用方面的机械性能进行研究。11月，1至3岁的因吉巴拉（玉山箭竹）竹纤维增强聚丙烯复合材料的拉伸强度、杨氏模量和冲击强度分别为111±9 - 125±8兆帕、15±0.9 - 25±0.72吉帕和47±5千焦/米 - 57±6千焦/米，而在2月，分别为86±3.86 - 116±10兆帕、11±0.71 - 23±1.5吉帕和34±4 - 52±6千焦/米。此外，11月，孔博尔查（绿竹）竹纤维增强聚丙烯复合材料的拉伸强度、杨氏模量和冲击强度分别为93±7 - 111±8兆帕、7±0.51 - 17±2.56吉帕和39±4 - 44±5千焦/米，而在2月，分别为60±5 - 104±10兆帕、12±0.95 - 14±0.92吉帕和26±3千焦/米 - 38±4千焦/米。此外，11月，梅卡内塞拉姆（玉山箭竹）竹纤维增强聚丙烯复合材料的拉伸强度、杨氏模量和冲击强度分别为99±8 - 120±11兆帕、9±0.82 - 16±1.85吉帕和37±4千焦/米 - 46±5千焦/米，而在2月，分别为91±8 - 110±9兆帕、8±0.75 - 14±1.86吉帕和34±3千焦/米 - 40±4千焦/米。在本研究中，两年生、11月的因吉巴拉竹具有最高的机械性能。埃塞俄比亚的竹纤维强度与先前在汽车工业中用于复合材料的竹纤维和玻璃纤维的研究相当。
