Ultra high molecular weight polyethylene (UHMWPE) fiber composite was reinforced by coating a functional layer on the surface of the UHMWPE fiber to improve interfacial adhesion between the fiber and the resin matrix. In this work, tannic acid (TA)‐Na⁺ composite modified UHMWPE fiber was used to improve moisture wettability and adhesion between the fiber and the resin. This approach had the advantages of being green, sustainable, lossless, low‐cost, and industrialized. The surface characteristics of UHMWPE fiber were investigated by Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy, and scanning electron microscopy. The results show that the TA coating can improve the surface roughness, wettability, and adhesion of UHMWPE fiber, thereby improving the interface properties between fiber and resin. The tensile strength of interfacial shear strength and macro‐composites of TA coating UHMWPE fiber increased by 43.3% and 28%, respectively.

中文翻译：

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UHMWPE纤维的有效表面改性，可改善环氧树脂复合材料的界面粘合力

通过在UHMWPE纤维表面涂覆功能层来增强超高分子量聚乙烯（UHMWPE）纤维复合材料，以改善纤维与树脂基体之间的界面粘合力。在这项工作中，单宁酸（TA）-Na ⁺复合改性UHMWPE纤维用于改善湿润性和纤维与树脂之间的粘合性。这种方法具有绿色，可持续，无损，低成本和工业化的优势。通过傅里叶变换红外光谱，X射线光电子能谱和扫描电子显微镜研究了UHMWPE纤维的表面特性。结果表明，TA涂层可改善UHMWPE纤维的表面粗糙度，润湿性和粘附性，从而改善纤维与树脂之间的界面性能。TA涂层UHMWPE纤维的界面剪切强度和宏观复合材料的拉伸强度分别增加了43.3％和28％。