Abstract In this study, the reactive extrusion mechanism of fiber-reinforced polyamide 66 materials with added carbodiimide was clarified, and the mechanical and tribological properties of the materials were evaluated. Increasing the molecular weight of resin is one of the methods that has been proposed to improve the wear resistance and toughness of fiber-reinforced materials. This study proposes a reactive extrusion method using poly-carbodiimide compounds. The effects of the feeding position of the poly-carbodiimide compounds in the twin screw extruder, type of carbodiimide compounds, and proportion of carbodiimide compounds on the extrusion reaction and static mechanical properties were elucidated. The toughness of the glass fiber-reinforced polyamide 66 was improved by the increase in molecular weight of the polyamide 66 related to the addition of the carbodiimide compounds. The wear resistance properties were significantly improved by the addition of carbodiimide compounds for both glass fiber-reinforced polyamide 66 and aramid fiber-reinforced polyamide 66 materials. In addition, a synergistic improvement in the toughness was also observed with the addition of both carbodiimide compounds and a maleic anhydride modified olefin polymer to the glass fiber-reinforced polyamide 66 material. The results of this study will be beneficial for improving the mechanical and tribological properties of extruded resins.

中文翻译：

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添加碳二亚胺的纤维增强聚酰胺66的反应挤出机理、力学和摩擦学行为

摘要 本研究阐明了添加碳二亚胺的纤维增强聚酰胺66材料的反应挤出机理，并对材料的力学和摩擦学性能进行了评价。提高树脂的分子量是人们提出的提高纤维增强材料耐磨性和韧性的方法之一。本研究提出了一种使用聚碳二亚胺化合物的反应挤出方法。阐明了聚碳二亚胺化合物在双螺杆挤出机中的进料位置、碳二亚胺化合物的种类和碳二亚胺化合物的比例对挤出反应和静态力学性能的影响。通过与添加碳二亚胺化合物相关的聚酰胺66的分子量增加，玻璃纤维增​​强聚酰胺66的韧性得到改善。通过为玻璃纤维增​​强聚酰胺 66 和芳纶纤维增强聚酰胺 66 材料添加碳二亚胺化合物，耐磨性能得到显着改善。此外，通过将碳二亚胺化合物和马来酸酐改性的烯烃聚合物添加到玻璃纤维增​​强聚酰胺 66 材料中，还观察到韧性的协同改进。该研究结果将有利于提高挤出树脂的机械和摩擦学性能。通过为玻璃纤维增​​强聚酰胺 66 和芳纶纤维增强聚酰胺 66 材料添加碳二亚胺化合物，耐磨性能得到显着改善。此外，通过将碳二亚胺化合物和马来酸酐改性的烯烃聚合物添加到玻璃纤维增​​强聚酰胺 66 材料中，还观察到韧性的协同改进。该研究结果将有利于提高挤出树脂的机械和摩擦学性能。通过为玻璃纤维增​​强聚酰胺 66 和芳纶纤维增强聚酰胺 66 材料添加碳二亚胺化合物，耐磨性能得到显着改善。此外，通过将碳二亚胺化合物和马来酸酐改性的烯烃聚合物添加到玻璃纤维增​​强聚酰胺 66 材料中，还观察到韧性的协同改进。该研究结果将有利于提高挤出树脂的机械和摩擦学性能。