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Modification of Renewable Cardanol onto Carbon Fiber for the Improved Interfacial Properties of Advanced Polymer Composites

机译：碳纤维上可更新腰果酚的改性以改善高级聚合物复合材料的界面性能

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A facile in situ polymerization was developed for grafting renewable cardanol onto the carbon fiber (CF) surfaces to strengthen the fiber–matrix interface. CFs were chemically modified with hydroxyl groups by using an aryl diazonium reaction, and then copolymerized in situ with hexachlorocyclotriphosphazene (HCCP) and cardanol to build cardanol-modified fibers (CF-cardanol). The cardanol molecules were successfully introduced, as confirmed using Raman spectra and X-ray photoelectron spectroscopy (XPS); the cardanol molecules were found to increase the surface roughness, energy, interfacial wettability, and activity with the matrix resin. As a result, the interlaminar shear strength (ILSS) of CF-cardanol composites increased from 48.2 to 68.13 MPa. In addition, the anti-hydrothermal ageing properties of the modified composites were significantly increased. The reinforcing mechanisms of the fiber–matrix interface were also studied.
机译：开发了一种简便的原位聚合技术，用于将可再生腰果酚接枝到碳纤维（CF）表面上，以增强纤维-基质界面。通过使用芳基重氮反应对CFs进行羟基化学修饰，然后将其与六氯环三磷腈（HCCP）和腰果酚原位共聚，制成腰果酚修饰的纤维（CF-腰果酚）。经拉曼光谱和X射线光电子能谱（XPS）证实，腰果酚分子已成功引入。发现腰果酚分子可增加表面粗糙度，能量，界面润湿性和与基质树脂的活性。结果，CF-腰果酚复合材料的层间剪切强度（ILSS）从48.2 MPa增加到68.13 MPa。此外，改性复合材料的抗水热老化性能显着提高。还研究了纤维-基质界面的增强机理。

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