评价多花山竹子种子增强型乙烯基酯复合材料的力学、热学和吸水性行为。

Evaluation of mechanical, thermal and water absorption behaviors of Polyalthia longifolia seed reinforced vinyl ester composites.

机构信息

Department of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai, 625 019, Tamil Nadu, India.

Department of Mechanical Engineering, ULTRA College of Engineering and Technology, Madurai, 625107, Tamil Nadu, India.

出版信息

Carbohydr Polym. 2020 Nov 15;248:116748. doi: 10.1016/j.carbpol.2020.116748. Epub 2020 Jul 12.

DOI:10.1016/j.carbpol.2020.116748

PMID:32919554

Abstract

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/m 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).

摘要

本研究提出了一种利用生物质固体废弃物的新方法，即使用压缩成型技术将多花山竹子（ Mast 树）种子作为增强体来制备复合材料。尝试用多花山竹子种子填充剂（PLSF）增强乙烯基酯基质（VE），填充剂的负载量从 5%到 50%不等。对制备的多花山竹子种子填充剂/乙烯基酯（PLSF-VE）复合材料样品的力学性能进行了测试和分析。结果表明，在 25%wt 的填充剂负载下，PLSF-VE 复合材料表现出最佳的力学性能；其拉伸强度和模量分别约为 32.50 MPa 和 1.23 GPa。弯曲强度、冲击强度和硬度的最大值分别约为 125 MPa、31.09 kJ/m 和 36.50。热变形试验和热重分析表明，PLSF-VE 复合材料分别可承受高达 66°C 和 430°C 的温度。此外，还对 PLSF 及其各种复合材料样品进行了研究，使用了能谱仪（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）。