Abstract Thermoplastic fiber-reinforced polymer (FRP) composites play a significant role in industrial applications due to their high energy absorbing capability. Combining ultra-high-molecular-weight polyethylene (UHMWPE) fiber/fabric and infusible thermoplastic methyl methacrylate (MMA) based matrix forms a complete thermoplastic composite system, which can fulfil the demands of being lightweight and high energy absorption during an impact loading. Among many different parameters, the interfacial bonding strength between fiber and matrix plays an important role in determining the impact performance of a composite system. In this study, the interfacial bonding strength between UHMWPE fibers and MMA thermoplastic matrix is improved by a simple deposition of polydopamine (PDA) surface treatment (on the fiber surface) with the addition of 0.03wt.% of functionalized multiwalled carbon nanotubes (MWCNT). Experimental investigations were carried out to determine the low-velocity impact behavior on the pristine and PDA surface-treated thermoplastic composites at three different impact energies of 26J, 32J, and 50J. The results after the impact test revealed that PDA and PDA with MWCNT fiber surface-treated composites offer less structural damage thanks to the improved delamination resistance at the fiber and matrix interface when compared to that of the pristine composite at all different impact energies.

中文翻译：

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具有聚多巴胺和功能化碳纳米管组合表面处理的 UHMWPE 织物/热塑性层压板的低速冲击行为

摘要 热塑性纤维增强聚合物 (FRP) 复合材料由于其高能量吸收能力在工业应用中发挥着重要作用。将超高分子量聚乙烯 (UHMWPE) 纤维/织物和难熔的热塑性甲基丙烯酸甲酯 (MMA) 基体相结合，形成一个完整的热塑性复合材料体系，可满足冲击载荷下轻质和高能量吸收的需求。在许多不同的参数中，纤维与基体之间的界面结合强度在决定复合系统的冲击性能方面起着重要作用。在这项研究中，UHMWPE 纤维和 MMA 热塑性基质之间的界面结合强度通过聚多巴胺 (PDA) 表面处理（在纤维表面）的简单沉积而得到改善，添加了 0.03wt.%。功能化多壁碳纳米管 (MWCNT) 的百分比。进行了实验研究以确定原始和 PDA 表面处理的热塑性复合材料在 26J、32J 和 50J 三种不同冲击能量下的低速冲击行为。冲击试验后的结果表明，与原始复合材料相比，在所有不同冲击能量下，PDA 和 PDA 与 MWCNT 纤维表面处理的复合材料相比，纤维和基体界面处的抗分层性能有所提高，因此结构损伤更小。