摘要
通过调整工艺条件,制得不同分散性的碳管改性环氧树脂,分别采用静置观察法、黏度法、细度法对分散性进行宏观表征。结果表明:碳管的分散性越好,环氧树脂的黏度越大、细度越低、保存时间越长;三种方法均可以表征碳纳米管的分散均匀性;黏度法和细度法可以实现碳管分散性的快速评价,但均需找出具体的评价标准。通过建立刮板细度与碳管分散性的对应关系,可以快速表征碳管的分散性,简便易行。
The dispersion of carbon nanotubes in epoxy resin fabricated in different technological conditions was macroscopical characterized by stewing oberservation, viscosity and fineness respectively. The results reveal that as the dispersion of carbon nanotubes is good, the v!scosity of epoxy is big, the fineness is low, and the conserving time is long. There are three means could all characterize the dispersion uniformity of carbon nanotubes, viscosity and fine- ness could characterize the dispersion of carbon nanotubes quickly, but the specific evaluation criterion should be found before. In this paper, the dispersions of carbon nanotubes were characterized quickly by establishing the corre- sponding relation of scraper fineness and the dispersion. This method is quick, direct, accurate and easily operated, compared to conventional micro-characterization technique.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2015年第2期33-36,共4页
Aerospace Materials & Technology
关键词
碳纳米管
分散性
宏观
表征
Carbon nanotubes, Dispersion, Macroscopy, Characterization
