利用层层自组装法在碳纤维表面构建多组分氧化石墨烯/聚醚胺/碳纳米管,在碳纤维表面构建新型界面相,从而提高碳纤维与树脂基体的结合能力。采用傅里叶红外光谱仪(FT-IR)和显微共焦拉曼光谱仪分析了碳纤维表面结构和官能团,采用热导仪测试了碳纤维复合材料的热导率,采用万能试验机测试了碳纤维复合材料的层间剪切强度(ILSS)、复合材料的弯曲强度和弯曲模量。结果表明:当碳纤维表面氧化石墨烯/聚醚胺/碳纳米管循环组装2次后,碳纤维复合材料的热导率提高了51.5%,层间剪切强度提高了52.2%,弯曲强度和弯曲模量分别提高了33.3%和60.1%。
The multi-component graphene oxide/polyetheramine/carbon nanotubes on carbon fiber surfaces were constructed using a layer-by-layer self-assembly method to create a new interfacial phase on the surface of carbon fiber,thus improving the bonding ability of carbon fiber and resin matrix.The surface structure and functional groups of carbon fibers were analyzed by Fourier transform infrared spectroscopy (FT-IR) and confocal Raman spectroscopy.The thermal conductivity of carbon fiber composites was tested with a thermal conductivity meter.The interlaminar shear strength (ILSS),flexural strength and flexural modulus of the carbon fiber composites were tested by a universal testing machine.The results showed that when the graphene oxide/polyetheramine/carbon nanotubes were cyclically assembled on the carbon fiber surface for two times,the thermal conductivity of the carbon fiber composite increased by 51.5%,the interlaminar shear strength increased by 52.2%,and the flexural strength and flexural modulus increased by 33.3% and 60.1%,respectively.
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基金资助
吉林省科学技术厅(20210506039ZP)
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