摘要
通过高温烧蚀法、酸腐蚀法和丙酮浸泡法对东丽碳纤维进行了去浆处理,对碳纤维去浆前后进行了扫描电镜(SEM),激光共焦显微拉曼光谱仪(Raman),原子力显微镜(AFM)和单丝拉伸强度测试,并对Raman测试条件下的碳纤维的结晶峰(G峰)和结构无序峰(D峰)进行了计算。通过高温烧蚀法处理过的碳纤维表面会存有一层残渣,并且高温会渗透到碳纤维内部,破坏碳纤维原有的结晶行为,从而使碳纤维单丝强度降低;而通过酸腐蚀法处理过的碳纤维表面相对光滑,在处理的过程中,加热的酸液会腐蚀碳纤维表面的环氧浆料,在浆料去除之后会进一步腐蚀碳纤维表面,并在碳纤维表面形成少量的沟槽,这不利于保持碳纤维原有的高性能拉伸强度;而通过丙酮浸泡法处理后的碳纤维束在外观上相对松散,纤维表面光滑,由于是在室温条件下进行,温度不会对碳纤维内部的有序结晶进行破坏,碳纤维单丝强度损失量较以其他去浆方式小。
Carbon fibers were desized by ablation,acid etching and acetone immersion method,which were supplied by Toray.Then we characterized them with scanning electron microscope,Raman spectra,atomic force microscope and single-filament tensile test,and calculated crystal peak(G peak)and structural disordered peak(D peak)for carbon fibers.There was a layer dregs on carbon fibers surface after high temperature ablation,and high temperature can infiltrate into carbon fibers to destroy crystallization,what reduced single-filament tensile strength.Acid etching made carbon fibers surface smooth,but hot acid would corrode epoxy resin on the surface and corrode carbon fibers further to produce few grooves,which was not conducive to keep original tensile strength.As for acetone immersion,it made carbon fiber tows loose in appearance and smooth on surface.This method would not destroy ordered crystal structure for experimenting at room temperature.In comparison with other methods,acetone immersion made tensile strength declined least.
作者
战奕凯
赵潜
杜帅
何敏
李莉萍
刘玉飞
ZHAN Yikai;ZHAO Qian;DU Shuai;HE Min;LI Liping;LIU Yufei(School of Materials Science and Metallurgical Engineering,Guizhou University,Guiyang 550025,China;National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang 550014,China)
出处
《贵州大学学报（自然科学版）》
2019年第6期32-36,共5页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金项目资助(51663006)
贵州省科技计划项目资助(黔科合基础[2016]1025号)
关键词
碳纤维
高温烧蚀
酸腐蚀
丙酮浸泡
拉曼分析
单丝强度
carbon fiber
high temperature ablation
acid corrosion
acetone immersion
Raman analysis
monofilament strength
