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Abstract：
There is growing emphasis on developing green composites as a substitute for oil-based materials. In the pursuit of studying and enhancing the mechanical properties of these composites, tensile tests are predominantly employed, often overlooking the flexural properties. This study focuses on researching the flexural properties of abaca-fiber-reinforced bio-based high-density polyethylene (BioPE) composites. Specifically, composites containing 30 wt% of abaca fiber (AF) were treated with a coupling agent based on polyethylene functionalized with maleic acid (MAPE). The test results indicate that incorporating 8 wt% of the coupling agent significantly improved the flexural strength of the composites. Thereafter, composites with AF content ranging from 20 to 50 wt% were produced and subjected to flexural testing. It was observed that flexural strength was positively correlated with AF content. A micromechanics analysis was conducted to evaluate the contributions of the phases. This analysis involved assessing the mechanical properties of both the reinforcement and matrix to facilitate the modeling of flexural strength. The findings of this study demonstrate the feasibility of replacing oil-based matrices, such as high-density polyethylene (HDPE), with fully bio-based composites that exhibit comparable flexural properties to their oil-based counterparts.
摘要：
人们越来越重视开发绿色复合材料作为油基材料的替代品。为了研究和提高这些复合材料的力学性能，主要采用拉伸试验，经常俯瞰弯曲性能。本研究的重点是研究算盘纤维增强生物基高密度聚乙烯（BioPE）复合材料的弯曲性能。具体来说,含有30重量％的abaca纤维（AF）的复合材料用基于马来酸官能化聚乙烯（MAPE）的偶联剂处理。测试结果表明，掺入8wt％的偶联剂显着提高了复合材料的弯曲强度。此后,制备AF含量范围为20至50重量%的复合材料并进行弯曲测试。观察到弯曲强度与AF含量呈正相关。进行了微观力学分析以评估阶段的贡献。此分析涉及评估钢筋和基体的机械性能，以促进弯曲强度的建模。这项研究的结果表明了替代油基基质的可行性，如高密度聚乙烯(HDPE)，完全生物基复合材料表现出与油基复合材料相当的弯曲性能。
