碳纳米管/碳复合材料的研究  

Research on Carbon Nanotube/Carbon Composites

作　　者：高晓晴[1] 郭全贵[1] 史景利[1] 翟更太[1] 刘朗[1] 

机构地区：[1]中国科学院山西煤炭化学研究所炭材料重点实验室

出　　处：《宇航材料工艺》2005年第2期29-33,共5页Aerospace Materials & Technology

基　　金：国家自然科学基金(10205023)

摘　　要：以多壁碳纳米管和中间相沥青为原料制备了碳纳米管/碳复合材料,主要研究了碳管用量及热处理温度对材料制备的影响,考察了材料的弯曲强度、硬度和热、电传导性能。结果表明:随着热处理温度的增加,材料表现出较大的收缩和失重,碳管用量较少的样品失重、收缩更大,碳管用量15% (质量分数)的样品经2 500℃处理后密度可达1. 90g/cm3;复合材料表现了远高于基体碳的弯曲强度和硬度;然而热、电传导性能远远低于基体碳。Carbon nanotube(CNT)/ carbon composites are prepared from raw materials of Multi-wall nanotubes and mesophase pitch. Physical variations of the bulk materials with heat treatment temperature (HTT) for different CNT wt% are studied .The bending strength and stiffness and thermal/electrical conductive properties of the composites are also studied. Results show that the composites have great weight loss and volumetric shrinkage with increasing HTT, Greater loss and shrinkage appears with less CNT wt% .The density of composites with 15%wt CNT is as high as 1.90 g/cm 3 when temperature reaches 2 500℃.The composites exhibit higher bending strength and stiffness and lower thermal/electrical conduction than those of carbon matrix.

关 键 词：碳复合材料 热处理温度 多壁碳纳米管 弯曲强度 传导性能 中间相沥青 原料制备 材料制备 质量分数 材料表 基体碳 用量 碳管 硬度 失重 收缩 样品 

分 类 号：TB332[一般工业技术—材料科学与工程] TF534.2[冶金工程—钢铁冶金]