CAJ | 학술논문

使用电化学氧化法对PAN基碳纤维进行表面改性,通过扫描电子显微镜（SEM）、Raman光谱和X射线光电子能谱仪（XPS）表征了碳纤维表面物理化学结构,同时结合力学性能分析,评价了碳酸氢铵、硫酸铵和复合铵盐溶液3种电解质体系的改性效果。实验结果表明,碳酸氢铵溶液下的电化学改性有利于界面粘结强度的提高,而硫酸铵溶液下的电化学改性有利于降低抗拉伸强度的损失,当采用复合溶液改性时,则可以同时提高碳纤维的抗拉伸强度和其复合材料的抗层间剪切强度。
사용전화학양화법대PAN기탄섬유진행표면개성,통과소묘전자현미경（SEM）、Raman광보화X사선광전자능보의（XPS）표정료탄섬유표면물이화학결구,동시결합역학성능분석,평개료탄산경안、류산안화복합안염용액3충전해질체계적개성효과。실험결과표명,탄산경안용액하적전화학개성유리우계면점결강도적제고,이류산안용액하적전화학개성유리우강저항랍신강도적손실,당채용복합용액개성시,칙가이동시제고탄섬유적항랍신강도화기복합재료적항층간전절강도。
PAN-based carbon fibers （CFs） were continuously treated using electrochemical oxidation method in different electrolyte systems. SEM, Raman and XPS were used to characterize the physical and chemical structure of CF surface. With mechanical analysis, NH4HCO3, （NH4）2SO4 and their electrolyte solution compound were evaluated in terms of their effects on the surface chemistry and structure of CFs. The results showed that electrochemical surface treatment in NH4HCO3 solution was helpful to improving the interface bond strength, while electrochemical surface treatment in （NH4）2SO4 solution could reduce the loss of tensile strength. When electrolyte solution compound employed, tensile strength and interface bond strength of CFs were improved simultaneously.