Abstract In the present study, we produced and investigated polypropylene-based single-polymer composites (SPCs) using four amorphous poly-alpha-olefin (APAO) grades as matrices and two plain-woven polypropylene fabrics as reinforcement. Our goal was to investigate the applicability of APAOs as matrix materials of SPCs and to widen the processing temperature window of SPCs utilizing the low melting temperature of APAOs. We produced the composites with a double-belt press at 120 °C, 140 °C, and 160 °C, and investigated them by density measurement, and static tensile and dynamic falling weight impact (IFWI) tests at room temperature, −40 °C, and 80 °C. The composites showed adequate tensile and excellent dynamic mechanical properties. The tensile test results indicated that the optimal consolidation temperature is between 120 °C and 140 °C, depending on the matrix applied. Increasing the test temperature resulted in reduced tensile strength. Increasing processing temperature caused a drop in perforation energy because of the reduced extent of the delamination of the better-consolidated composites. Both static and dynamic mechanical properties can be improved with the use of a stronger fabric. Furthermore, the processing temperature window can be widened with APAOs as matrix materials, and these single-polymer composites possess many beneficial properties.

中文翻译：

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具有无定形聚α-烯烃基体的可回收、轻质聚丙烯基单一聚合物复合材料的开发

摘要 在本研究中，我们使用四种无定形聚 α-烯烃 (APAO) 等级作为基质和两种平纹聚丙烯织物作为增强材料，生产并研究了聚丙烯基单聚物复合材料 (SPC)。我们的目标是研究 APAO 作为 SPC 基体材料的适用性，并利用 APAO 的低熔点来拓宽 SPC 的加工温度窗口。我们使用双带压机在 120 °C、140 °C 和 160 °C 下生产复合材料，并通过密度测量以及室温下 -40 °C 下的静态拉伸和动态落锤冲击 (IFWI) 测试对其进行研究C 和 80 °C。复合材料表现出足够的拉伸强度和优异的动态力学性能。拉伸试验结果表明，最佳固结温度在 120℃～140℃之间，取决于应用的矩阵。提高试验温度导致拉伸强度降低。由于更好固结的复合材料的分层程度降低，提高加工温度会导致穿孔能量下降。使用更坚固的织物可以改善静态和动态机械性能。此外，APAOs作为基体材料可以扩大加工温度窗口，这些单聚合物复合材料具有许多有益的特性。使用更坚固的织物可以改善静态和动态机械性能。此外，APAOs作为基体材料可以扩大加工温度窗口，这些单聚合物复合材料具有许多有益的特性。使用更坚固的织物可以改善静态和动态机械性能。此外，APAOs作为基体材料可以扩大加工温度窗口，这些单聚合物复合材料具有许多有益的特性。