二茂铁表面活性剂在聚丙烯腈基炭纤维表面的可逆修饰  

Reversible surface modification of PAN-based carbon fibers by a ferrocene-based surfactant

作　　者：张晓芳 姚婷婷 刘玉婷[1,3] 吴刚平[1,2,3] ZHANG Xiao-fang;YAO Ting-ting;LIU Yu-ting;WU Gang-ping(CAS Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;National Engineering Laboratory for Carbon Fiber Technology,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001,China)

机构地区：[1]中国科学院山西煤炭化学研究所中国科学院炭材料重点实验室,山西太原030001 [2]中国科学院大学材料与光电研究中心,北京100049 [3]中国科学院山西煤炭化学研究所碳纤维制备技术国家工程实验室,山西太原030001

出　　处：《新型炭材料（中英文）》2023年第5期989-996,共8页New Carbon Materials

基　　金：山西省科技重大专项项目(20181101020);山西煤化所自主创新项目-基础研究项目(SCJC-HN-2022-15).

摘　　要：采用电化学可逆表面活性剂(二茂铁)十二烷基二甲基溴化铵(FDDA)对炭纤维进行表面改性。结果表明,FDDA能够在炭纤维表面进行吸附及电化学脱附,实现可逆的表面改性。同时证实了FDDA主要通过非静电相互作用在炭纤维表面以多分子层的方式进行吸附。此外,通过单丝拉伸断裂法探究了FDDA改性炭纤维对炭纤维/环氧树脂界面性能的影响。与未改性的炭纤维相比,FDDA改性的炭纤维与环氧树脂之间的界面黏结性能得到明显改善。The surface of carbon fibers(CFs)was modified by a surfactant(ferrocenemethyl)dodecyldimethylammonium bromide(FDDA)to enhance the interfacial ashesion between the CFs and surrounding matrix.Results showed that it could be electrochemically desorbed by a potentiostatic electro-oxidation method.The FDDA adsorption isotherm was attributed to the formation of multi-molecular layers mainly by non-electrostatic interactions.The adsorption and desorption of FDDA on the CFs have little effect on their tensile strength.The effects of FDDA modification on the interfacial properties of CF/epoxy composites were evaluated by a single-filament fragmentation test.Compared with the un-modified CFs,the FDDA-modified ones had significantly improved interfacial adhesion properties in the composites.This method provides a potential approach for preparing recyclable CF/resin composites.

关 键 词：炭纤维 FDDA 可逆修饰 界面性能 

分 类 号：TB33[一般工业技术—材料科学与工程]