Jifen Wang
材料科学技术（英）
Oleylamine (G18) and octanol (G8) were grafted onto the surfaces of the multi-walled carbon nanotubes (CNTs). The grafted CNTs were dispersed into palmitic acid (PA) and paraffin wax (PW) to prepare phase change composites. The heat storage/retrieval experiments showed that the composites kept stable after repeating melting and solidification for 80 times. The structure of the G18-CNT/PA and G8-CNT/PA was homogenous compared with the pristine CNT (P-CNT)/PA. The latent heat capacity (Ls) of solid liquid phase change of G18-CNT/PW was higher than that of PW while those of the G8-CNT/PW and P-CNT/PW were lower than that of PW. Compared with PA, all PA based composites with both P-CNTs and grafted CNTs decreased Ls evidently. The Ls values of G18-CNT composites in both matrices were higher than that of the counterparts of G8-CNT. The thermal conductivities of all the PA based composites in the study were higher than that of PA, as well as those of all the PW based composites. However, the thermal conductivities of the
G18-CNT composites in both matrixes were lower than those of the G8-CNT composites in both matrixes at all measured temperatures.
关键词:
Carbon nanotube (CNT)
Jifen Wang
材料科学技术（英）
Oleylamine (G18) and octanol (G8) were grafted onto the surfaces of the multi-walled carbon nanotubes (CNTs). The grafted CNTs were dispersed into palmitic acid (PA) and paraffin wax (PW) to prepare phase change composites. The heat storage/retrieval experiments showed that the composites kept stable after repeating melting and solidification for 80 times. The structure of the G18-CNT/PA and G8-CNT/PA was homogenous compared with the pristine CNT (P-CNT)/PA. The latent heat capacity (Ls) of solid liquid phase change of G18-CNT/PW was higher than that of PW while those of the G8-CNT/PW and P-CNT/PW were lower than that of PW. Compared with PA, all PA based composites with both P-CNTs and grafted CNTs decreased Ls evidently. The Ls values of G18-CNT composites in both matrices were higher than that of the counterparts of G8-CNT. The thermal conductivities of all the PA based composites in the study were higher than that of PA, as well as those of all the PW based composites. However, the thermal conductivities of the
G18-CNT composites in both matrixes were lower than those of the G8-CNT composites in both matrixes at all measured temperatures.
关键词:
Carbon nanotube (CNT)
林丽锋
,
陈奕卫
,
钱敏
,
李天军
,
丁慧
,
张哲娟
,
孙卓
,
冯涛
功能材料与器件学报
doi:10.3969/j.issn.1007-4252.2009.01.018
介绍了一套简单、低成本的制作二极管型碳基膜场发射显示器模块的制作方法.该显示单元模块为16 * 16矩阵型点阵,可根据实际需要拼接成各种尺寸.器件的阴极和阳极均采用丝网印刷技术,包括:阴极导电图形、CNT图形、阳极荧光图形的印刷.各膜层图形经过精心设计以实现矩阵选址.使用低玻粉将阴极和阳极烧结之后,采用超高真空排气台进行排气,然后装配上驱动电路,即实现了单元碳基膜场发射显示器模块的制作.另外,为了改善CRT荧光粉的黏附性差和电阻率低的问题,我们往CRT荧光粉浆料中分别加入了碳纳米管和硝酸镁,得到了更好的发光性能.
关键词:
碳纳米管
,
场发射显示器
,
丝网印刷
,
荧光粉
