| 膨胀石墨体积膨胀率对红外遮蔽性能的影响 |
| |
| 引用本文： | 赵纪金,李晓霞,郭宇翔,杨莉.膨胀石墨体积膨胀率对红外遮蔽性能的影响[J].红外与激光工程,2014,43(2):434-437. |
| |
| 作者姓名： | 赵纪金 李晓霞 郭宇翔 杨莉 |
| |
| 作者单位： | 1.脉冲功率激光技术国家重点实验室,安徽 合肥 230037; |
| |
| 基金项目： | 脉冲功率激光技术国家重点实验室基金(SKL20132R03) |
| |
| 摘 要： | 膨胀石墨是一种具有潜在军事应用价值的新型光电无源干扰材料。依次以硝酸和磷酸、硝酸和乙酸的混酸为插层剂，高锰酸钾为氧化剂，采用分步插层法制备出了不同体积膨胀率的膨胀石墨；采用扫描电镜分析了膨胀石墨微观结构随膨胀体积的变化；采用静态测试方法测试了不同体积膨胀率膨胀石墨的红外遮蔽性能。结果表明:随膨胀体积的增大，膨胀石墨的孔隙率增大，石墨片层被充分打开；膨胀石墨对红外辐射的遮蔽性能随膨胀体积的增大而增大，当膨胀体积从233 mlg-1增大到450 mlg-1时，其红外遮蔽率从66.43%增大到90.77%。
|
| 关 键 词： | 膨胀石墨 膨胀体积 红外 遮蔽性能 |
| 收稿时间： | 2013-06-10 |
Effect of expanding volume of exfoliated graphite on infrared screening performance |
| |
| Affiliation: | 1.State Key Laboratory of Pulsed Power Laser Technology,Hefei 230037,China;2.Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province,Electronic Engineering Institute,Hefei 230037,China |
| |
| Abstract: | Exfoliated graphite is a new kind of composite interfering materials used in electro-optical countermeasure. Exfoliated graphite with different expanding volume was prepared by two-step intercalation, in which the mixture of nitric acid and phosphoric acid and that of nitric acid and acetic acid were employed as intercalating agent step by step, and potassium permanganate was used as oxidant. The microstructure of exfoliated graphite with different expanding volume was analyzed by scanning electron microscope. The infrared screening performance of exfoliated graphite with different expanding volumes was measured by a static method. The results show that the porosity of exfoliated graphite rises with the increasing of expanding volume, the interlayers of graphite are fully opened. And the infrared screening performance enhances with the increasing of expanding volume. When the expanding volume increases from 233 mlg-1 to 450 mlg-1, the infrared screening rate rises from 66.43% to 90.77%. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
