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Evaluation of mechanical, thermal and water absorption behaviors of Polyalthia longifolia seed reinforced vinyl ester composites.
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2020-07-12 , DOI: 10.1016/j.carbpol.2020.116748
B Stalin 1 , N Nagaprasad 2 , V Vignesh 3 , M Ravichandran 4 , Nagarajan Rajini 5 , Sikiru Oluwarotimi Ismail 6 , Faruq Mohammad 7
Affiliation  

This study presented a novel utilization of biomass solid waste, named Polyalthia longifolia (Mast tree) seed as a reinforcement in a composite, using a compression molding technique. An attempt was made to reinforce vinyl ester matrix (VE) with Polyalthia longifolia seed filler (PLSF), ranging from 5 to 50 wt% loadings. Mechanical properties of the fabricated Polyalthia longifolia seed filler/vinyl ester (PLSF-VE) composite samples were tested and analyzed. The results showed that the PLSF-VE composite exhibited optimum mechanical properties at 25 % wt of filler loading; ultimate tensile strength and modulus were approximately 32.50 MPa and 1.23 GPa, respectively. The ultimate flexural, impact strengths and hardness were observed around 125 MPa, 31.09 kJ/m2 and 36.50, respectively. The heat deflection test and thermo-gravimetric analysis depicted that the PLSF-VE composites withstood up to 66 °C and 430 °C, respectively. Furthermore, the PLSF and its various composite samples were studied, using energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM).



中文翻译:

评价长白花种子增强乙烯基酯复合材料的机械,热和吸水性能。

这项研究提出了一种新的利用生物质固体废物的方法,即利用压缩成型技术,将名为Polyalthia longifolia(肥大树)种子作为复合材料的增强材料。有人企图加强乙烯基酯矩阵(VE)与垂枝暗罗种子填料(PLSF),范围从5至50重量%的负载量。测试并分析了制作的长白花种子填料/乙烯基酯(PLSF-VE)复合材料样品的机械性能。结果表明,PLSF-VE复合材料在25%wt的填料填充量下表现出最佳的力学性能。极限抗拉强度和模量分别约为32.50 MPa和1.23 GPa。在125 MPa(31.09 kJ / m)附近观察到极限挠曲,冲击强度和硬度2和36.50。热变形测试和热重分析表明,PLSF-VE复合材料分别承受了66°C和430°C的高温。此外,使用能量色散X射线(EDX),X射线衍射(XRD),傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)对PLSF及其各种复合样品进行了研究。

更新日期:2020-07-24
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