(湖南大學(xué) 材料科學(xué)與工程學(xué)院， 長(zhǎng)沙 410082)
摘 要: 利用CVD法制備多壁碳納米管， 并對(duì)其進(jìn)行親水化表面處理。 在存在表面活性劑的情況下， 利用共沉積法制備碳納米管-超細(xì)銅粉復(fù)合粉體。 復(fù)合粉體經(jīng)還原后， 采用冷壓燒結(jié)、 六面頂熱壓、 真空熱壓燒結(jié)和真空熱壓后熱軋4種不同工藝成型。 利用SEM和XRD比較了這幾種工藝成型的復(fù)合材料結(jié)構(gòu)和被氧化的情況。 結(jié)果表明， 采用真空熱壓后熱軋工藝制備的碳納米管銅基復(fù)合材料的致密度較高且能有效地防止被氧化。
關(guān)鍵字: 碳納米管； 復(fù)合粉體； 分散； 復(fù)合材料
XU Hai-yang, ZHANG Hua
（College of Materials Science and Engineering, Hunan University,
Changsha 410082, China）
Abstract: The multi-walled carbon nanotubes were synthesized by chemical vapor deposition (CVD), and the surface pretreatment was carried out to modify carbon nanotubes with some hydrophilic groups. The superfine CNTs/Cu composite powder was obtained by co-deposition method with the addition of some surfactants. After deoxidation of the composite powder, four kinds of pressing forming methods were used to prepare the CNTs/Cu bulk, which are cold pressing and sintering, hot pressing with cubic superhigh-pressure device, vacuum forming and sintering and hot rolling after vacuum forming. SEM and XRD results show that the composite that is hot rolled after vacuum forming, has relatively high density and can avoid being oxidized effectively.
Key words: carbon nanotubes; composite powder; dispersion; matrix composites
