回收与可持续英文2024被引 11
玻纤和生物源碳酸钙增强回收聚丙烯的可持续复合材料
Sustainable composites reinforced with glass fiber and bio-derived calcium carbonate in recycled polypropylene
Isiaka Oluwole Oladele, Samuel Olumide Falana, Chukwudi Okoro, Linus Nnabuike Onuh, Ilesanmi Akinbamiyorin, Solomon Oluwole Akinrinade, Miracle Hope Adegun, Ebenezer Temitope Odemona · Federal University of Technology
摘要整理
本研究开发了以回收聚丙烯(RPP)为基体,玻璃纤维和蛤壳颗粒为增强体的可持续复合材料。通过改变增强体含量(3~18 wt%)制备复合材料,系统评估了其拉伸、弯曲、冲击、硬度、磨损、导热系数和吸水性能。结果表明,12 wt%增强体含量时复合材料性能最优,拉伸强度达45.41 MPa,拉伸模量270.09 MPa,断裂能0.95 J,冲击强度16.44 J/m²,硬度63 HS,磨损指数最低为3.37 mg。这些性能改善源于增强体与聚丙烯基体间的有效应力传递、强界面粘结和均匀分散。当增强体含量进一步增加至15 wt%和18 wt%时,机械性能和磨损性能下降,表明超过了最优增强阈值。导热系数随增强体增加而降低,在3 wt%时达最低值0.12 W/mK,使材料适用于隔热应用。研究结果表明混合合成/天然增强体能有效提升回收聚合物性能,12 wt%复合材料因其轻质、耐久、隔热特性,在汽车、建筑和建材领域具有广阔应用前景。
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