S. Nayak, Anupama Hiremath, G. Bolar, Atharva Sachin Punekar, Shivam Prakash, Hrithik Shetty, J. P. Jaideep
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引用次数: 0
摘要
利用磁力搅拌器从榕树气生根中制备出榕树气生根粉(BAR),用于改性环氧树脂。改性是以不同比例的榕树气生根粉进行的,即 2%、4%、6% 和 8%(按重量计)。采用手糊和压缩成型工艺,用改性和未改性树脂制造复合材料,以评估 BAR 粉末对其机械性能的影响。测试结果表明,BAR 粉末的加入对复合材料的机械性能有积极影响,拉伸强度、弯曲强度和冲击强度都有所提高,其中 BAR 含量为 4% 的复合材料的拉伸强度和弯曲强度最高,分别达到 407.81 兆帕和 339 兆帕,而 BAR 含量为 6% 的试样的冲击强度最高,达到 194.02 kJ/m2。虽然颗粒重量比例越高,性能越低,但仍明显高于使用未改性树脂制备的复合材料。BAR 粉末的重量分析和傅立叶变换红外光谱(FTIR)证实纤维素是主要成分,其次是木质素和半纤维素。使用扫描电子显微镜研究了层压板的失效机理。
Exploring the Effect of Natural Ficus benghalensis Tree Aerial Root Powder on the Mechanical Properties of Basalt-Fiber-Reinforced Polymer Composites
Banyan aerial root (BAR) powder was prepared from the aerial roots of a Banyan tree to modify epoxy resin using a magnetic stirrer. The modification was performed at different proportions of BAR powder, namely, 2%, 4%, 6%, and 8%, by weight. Composites were fabricated with modified and unmodified resins using a combination of hand lay-up and compression molding processes to evaluate the influence of BAR powders on their mechanical properties. The test results showed that BAR powder incorporation had a positive influence on the mechanical properties of the composites, as an increase in tensile, flexural, and impact strengths was observed, with the highest tensile and flexural properties of 407.81 MPa and 339 MPa, respectively, seen in composites with 4% BAR and the highest impact strength 194.02 kJ/m2 observed in the specimen with 6% BAR powder. Though the properties saw a dipping trend at higher weight proportions of the particulate, they were still significantly higher than the properties of laminates prepared with unmodified resin. Gravimetric analysis and Fourier transform infrared spectroscopy (FTIR) on BAR powders confirmed cellulose to be the major constituent, followed by lignin and hemicellulose. A scanning electron microscope was used for studying the failure mechanisms of the laminates.