环己烷浮游催化法在碳纤维表面生长碳纳米管  

Growth of carbon nanotubes onto the carbon fibers from cyclohexane via floating catalyst method

作　　者：安锋[1,2] 吕春祥[1] 郭金海[1,2] 卢慧斌[1,2] 

机构地区：[1]碳纤维制备技术国家工程实验室中国科学院山西煤炭化学研究所,太原030001 [2]中国科学院研究生院,北京100049

出　　处：《化工新型材料》2012年第6期51-53,共3页New Chemical Materials

摘　　要：以环己烷为碳源、二茂铁为催化剂前躯,采用浮游催化法成功的在碳纤维表面生长了碳纳米管(CNT),制备了多尺度杂化材料CNTs/CF。实验重点考察了反应温度、二茂铁浓度、载气等参数对CNT在纤维表面生长的影响,通过扫描电镜(SEM)、投射电镜(TEM)研究了CNTs/CF的形貌及产物CNT的微观结构。当固定反应温度为820℃、二茂铁-环己烷浓度为2g/100mL时,随着氢气在载气中含量在0～100%范围内变化,产物CNT直径亦有86nm降低至39nm。通过单丝拉伸测试发现,相比初始碳纤维,不同长度的CNTs/CF单纤维强度下降幅度均在10%以内。Multiscale hybrid material CNTs/CF, carbon nanotubes（CNTs）grown onto the carbon fibers, was suc- cessfully prepared using cyclohexane as carbon source, ferrocene as catalyst precursor via floating catalyst method. Through observing the morphology of CNTs/CF and microstructure of as-synthesized CNTs using scanning electron microscope （SEM） and transmission electron microscope（TEM）, emphasis was made to check the influence of growth temperature, con- centration of ferrocene and carrier gas etc on carbon nanotubes grown onto the carbon fibers. When the reaction temperature and concentration of ferrocene were fixed at 820℃ and 2g/100ml, respectively, the diameters of as-synthesized CNTs de- creased from 86nm to 39nm with 0-100% content of hydrogen in the carrier gas. Compared with the as-received carbon fibers, single fiber tensile tests showed that the tensile strength degraded within 10% for different lengths of single CNTs/ CF.

关 键 词：碳纳米管 环己烷 碳纤维 二茂铁 

分 类 号：TB383.1[一般工业技术—材料科学与工程]