A carbon fiber reinforced thermoplastic (CFRTP) was irradiated with a high energy electron-beam. As a result, the tensile strength of high-density polyethylene (HDPE)-based CFRTPs was significantly improved by gradually increasing the electron-beam dose. It was confirmed that the adhesion between CF and HDPE was improved and the surface properties of CF and HDPE were readily modified by electron-beam. It was verified from spectroscopic analysis that various oxygen-containing functional groups were formed on the surface of CF and HDPE by irradiation and we believe that strong attractive interactions took place among these functional groups at the interface of CFs and HDPE. Finally, it was conclusive that electron-beam irradiation provided two main effects on CFRTPs. One was cross-linking of thermoplastic resin for efficient load transfer from resin to CF and the other was formation of surface functional group and attractive interaction of these functional groups at the interface of fiber and matrix. These two effects showed synergetic contribution to enhance the mechanical properties of CFRTP.

中文翻译：

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碳纤维增强热塑性塑料中交联和界面相互作用的协同效应，通过电子束辐照增强其拉伸强度

用高能电子束辐照碳纤维增强的热塑性塑料（CFRTP）。结果，通过逐渐增加电子束剂量可以显着提高高密度聚乙烯（HDPE）基CFRTP的拉伸强度。证实了CF和HDPE之间的粘附性得到改善，并且CF和HDPE的表面性质容易被电子束改性。通过光谱分析证实，通过辐射在CF和HDPE的表面上形成了各种含氧官能团，我们相信在CF和HDPE的界面上这些官能团之间发生了强烈的吸引作用。最后，结论是电子束辐照对CFRTP具有两个主要作用。一个是热塑性树脂的交联以有效地从树脂转移到CF，另一个是表面官能团的形成以及这些官能团在纤维和基质界面上的吸引作用。这两个作用显示出协同作用，以增强CFRTP的机械性能。