氧化锌/碳复合材料的合成、表征及吸波性能研究

ZnO /C Material's Composed and Microwave Property

本文先以二水合醋酸锌和氢氧化钠为原料,得到了氧化锌微晶;以合成的氧化锌为前驱物,葡萄糖为碳源,由水热法合成了产物氧化锌/碳(ZnO/C)复合材料。用X射线衍射(XRD),拉曼光谱(RM),扫描电镜(SEM),透射电镜(TEM),热重分析(TG)等,对产物进行了表征,讨论了不同反应条件(添加剂,时间,溶剂)对合成氧化锌/碳微晶的影响,并对产物的微波性能进行了测试。结果表明,所得产物为氧化锌/碳,呈棒状形貌,热稳定性好,并具有优异的吸波性能。在频率为17GHz时,3mm厚度的产物微波吸收达到-12dB。

With zinc acetate dehydrate and sodium hadroxide as raw materials, hydrothermal react 12 hours in 180 ℃, we composed the zinc oxide material; with the composed zinc oxide as precursor, glucose as carbon material, hydrothermal react 12 hours in 170℃, we composed the product zinc oxide/carbon （ZnO/C） composite materials at last. We used X - ray diffractometer （ XRD ）, Raman spectrum （ RM ）, scanning electron microscope （ SEM ）, transmission electron microscopy （TEM）, Thermogravimetric analysis （TG） and so on to representing the products, discussing the different reaction conditions （additive agent, time, slovent） to reflect the oxide zinc/carbon particles, analyzes the product ＂s dielectric constant, permeability, microwave absorption. The results show all products are oxide zinc/carbon products. The products are rod- shaped morphology and stability thermostability in Nitrogen＇s conditions, the different reaction elements reflect the oxide zinc/carbon＇ morphology, when the frequency is 1GHz, dielectric constant reach 40dB, magnetic conductivity reach 30dB maximum respectively; when the frequency is 17GHz, zinc oxide/carbon＇ microwave absorption reach the maximum - 12dB with 3mm thickness.