高等学校化学学报2017，Vol.38Issue(9)：1687-1694,8.DOI:10.7503/cjcu20170037
超临界正丁醇对回收碳纤维复合材料的降解及表征
Degradation and Characterization of Recycling Carbon Fiber/Epoxy Resin Composites in Supercritical n-Butanol
摘要
Abstract
Recycling carbon fibers from carbon fiber/epoxy resin ( CF/EP ) composites using supercritical n-butanol were reported. The quantitative relationship between the degradation rate of epoxy resin and recycling process parameters was proposed through response surface methodology. The influence of process parameters on the degradation rate of epoxy resin was investigated by graphical optimization. Besides, the microstructure, the graphitization degree, the surface chemistry and the mechanical properties of the recycled carbon fibers were analyzed by scanning elcetron microscopy ( SEM ) , atomic force microscopy ( AFM ) , X-ray photoelectron spectrometry( XPS) , Raman spectrum and single-filament tensile strength testing. The results show that the er-ror between the actual and the theoretical degradation rate is within ± 5. 5％, and the reaction temperature has the greatest impact on the degradation rate of epoxy resin, followed by the reaction time, KOH concentration and n-butanol volume. Given the optimal process parameters( i. e., reaction temperature at 330 ℃, reaction time at 60 min, KOH concentration at 0. 0538 mol/L, and feed ratio at 0. 024 g/mL) , there were no residual resin and graphitization on the surface of the recycled carbon fibers;the average roughness(Ra) and O/C ratio showed little change comparing with those of the original carbon fibers; and the average tensile strength and Young' s modulus were about 93. 58％ and 94. 87％ of those of the original carbon fibers, respectively.关键词
超临界正丁醇/降解/回收碳纤维/碳纤维/环氧树脂复合材料Key words
Supercritical n-butanol/Degradation/Recycling carbon fibe/Carbon fiber/epoxy resin( CE/EP ) composite分类
化学化工引用本文复制引用
黄海鸿,张保玉,赵志培..超临界正丁醇对回收碳纤维复合材料的降解及表征[J].高等学校化学学报,2017,38(9):1687-1694,8.基金项目
国家自然科学基金(批准号:51375135)和教育部新世纪优秀人才支持计划项目(批准号: NCET-12-0837)资助. Supported by the National Natural Science Foundation of China(No.51375135) and the Educational Ministry's New Century Excellent Talents Supporting Plan, China(No.NCET-12-0837). （批准号:51375135）
