摘要
采用化学氧化法制备了可膨胀石墨,并将其分别与CuO、Fe_(3)O_(4)混合、高温(900℃)膨胀,得到了掺杂膨胀石墨;测试掺杂膨胀石墨的膨胀体积,并用静态测试方法对比测试了掺杂膨胀石墨的遮蔽率。结果发现,掺杂CuO膨胀石墨的膨胀体积从不掺杂膨胀石墨的245 mL·g^(-1)下降到130 mL·g^(-1),相应的遮蔽率从78.4%下降到48.3%。而掺杂Fe_(3)O_(4)的膨胀石墨的膨胀体积下降到190 mL·g^(-1),遮蔽率下降到73.7%。两种掺杂膨胀石墨的红外遮蔽效果均比不掺杂的膨胀石墨差。
The expandable graphite prepared by chemical oxidizing process was mixed with CuO and Fe304,respectively,and then expanded at 900℃.The expanded volumes of the doped exfoliated graphite(EGs)were tested,and the IR screening characteristics of the doped EGs were tested by a static screening testing system.Results show that the expanded volume of CuO doped EG decreases from 245 mL·g^(-1)to 130 mL·g^(-1),and the correspongding shielding efficiency decreases from 78.4%to 48.3%.The expanded volume of Fe_(3)O_(4)doped EG decreases to 190 mL·g^(-1),and its shielding efficiency decreases to 73.7%.The IR shielding efficiencies of the two doped EGs are both inferior to that of the EG.
作者
豆正伟
李晓霞
赵纪金
DOU Zheng-wei;LI Xiao-xia;ZHAO Ji-jin(State Key Laboratory of Pulsed Power Laser Technology,Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province,Electronic Engineering Institute of PLA,Anhui 230037,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2011年第1期82-85,共4页
Chinese Journal of Energetic Materials
关键词
复合材料
膨胀石墨
膨胀体积
遮蔽率
composite materials
exfoliated graphite
expanded volume
shielding efficiency
