The invention discloses a preparation method of a bamboo carbon tube microwave absorbent, which comprises the following steps: step 1, dissolve the required amount of cobalt acetate and nickel acetate in a certain amount of ethanol to obtain a mixed liquid A; step 2, weigh the required amount of dicyandiamine and dissolve in a certain amount of ethanol to obtain a mixed liquid B; step 3, mix the mixed liquid A and the mixed liquid B evenly and then dry at a certain temperature; The precursor particles were obtained; step 4, the precursor particles of step 3 were calcined in the rare gas atmosphere to obtain the bamboo carbon tube absorbent. The preparation method of the invention uses cobalt and nickel as catalyst to prepare bamboo-shaped carbon tube absorbent in one step. The product obtained not only maintains the one-dimensional structure of the carbon tube, but also exhibits a special shape similar to that of the bamboo. After testing, the bamboo-shaped carbon tube absorbent has the absorbing property comparable to that of the traditional carbon tube, and the method has obvious superiority to the traditional method of preparing the carbon tube. Potential, that is, simple process, large output, low production cost.
【技术实现步骤摘要】
一种竹节状碳管吸波剂的制备方法
本专利技术涉及一种竹节状碳管吸波剂的制备方法,该方法以钴镍为催化剂一步制备竹节状碳管吸波剂,属于微波吸收材料
技术介绍
随着电子电器化的快速发展,与之带来的电磁辐射不仅干扰精密电子仪器的运转,更对人类的健康产生严重伤害,因此发展高效电磁波吸收材料具有重要意义。相较于传统吸波材料,新型吸波材料对电磁吸收性能提出了更高的要求,要求具有“轻质、宽频、薄厚度、强吸收、热稳定”等优势。碳管作为一种典型的碳材料,具有独特的一维结构和优异的机械强度,具备潜力成为优异的吸波剂。当前的众多研究者也对碳管做了相关的研究,如Yang等人利用共沉淀法将碳管与石墨烯和四氧化三铁复合作为吸波材料,在2-18GHz实现了良好的电磁吸收(WangL.N.,JiaX.L.,LiY.F.,etal;Synthesisandmicrowaveabsorptionpropertyofflexiblemagneticfilmbasedongrapheneoxide/carbonnanotubesandFe3O4nanoparticles,J.Mater.Chem.A,2014,2,14940-14946)。Huang等人则通过水热法合成了多壁碳管和石墨烯泡沫,并且通过调整碳管的含量可以调控泡沫的复介电常数和导电性,实现在C频带和X频带的有效吸收(ChenH.H.,HuangZ.Y.,HuangY.,etal;SynergisticallyassembledMWCNT/graphenefoamwithhighlyefficientmicrowaveabsor ...
【技术保护点】
1.一种竹节状碳管吸波剂的制备方法,其特征在于,包括如下步骤:步骤1,将所需量的乙酸钴和乙酸镍溶于一定量的乙醇中,得到混合液A;步骤2,称取所需量的二氰二胺溶于一定量的乙醇中,得到混合液B;步骤3,将混合液A和混合液B混合均匀后于一定温度下干燥,得到前驱体颗粒;步骤4,将步骤3的前驱体颗粒在稀有气体氛围下进行煅烧处理,得到竹节状碳管吸波剂。
【技术特征摘要】
1.一种竹节状碳管吸波剂的制备方法,其特征在于,包括如下步骤:步骤1,将所需量的乙酸钴和乙酸镍溶于一定量的乙醇中,得到混合液A;步骤2,称取所需量的二氰二胺溶于一定量的乙醇中,得到混合液B;步骤3,将混合液A和混合液B混合均匀后于一定温度下干燥,得到前驱体颗粒;步骤4,将步骤3的前驱体颗粒在稀有气体氛围下进行煅烧处理,得到竹节状碳管吸波剂。2.根据权利要求1所述的竹节状碳管吸波剂的制备方法,其特征在于:步骤1中,乙酸钴和乙酸镍的加入摩尔比为1∶1。3.根据权利要求1所述的竹节状...
【专利技术属性】
技术研发人员:姬广斌,成岩,赵唤琴,赵越,
申请(专利权)人:南京航空航天大学,
类型:发明
国别省市:江苏,32
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