吸附钡铁氧体的多孔陶粒吸波材料制备及其性能
发布时间：2018-12-11 05:08
【摘要】：以硝酸铁、硝酸钡、柠檬酸为原料,采用溶胶-凝胶法合成钡铁氧体溶胶,将其吸附于多孔陶粒表面和微孔中,经焙烧制备得到电磁吸波功能陶粒;再将该功能陶粒用作集料制备新型水泥基复合吸波材料。研究了合成的钡铁氧体的物相、形貌、复介电常数和复磁导率;结果表明合成的钡铁氧体纯度高,合成温度对其结晶度和晶体形貌有影响,经1000℃煅烧制得的钡铁氧体具有良好的吸波能力;对制得的功能陶粒进行了测试,结果表明钡铁氧体能包覆至陶粒表面和孔壁上;采用弓形法测得的功能陶粒水泥基吸波材料在8~18GHz频率范围内的电磁波反射率明显优于采用碎石和普通陶粒制备的试样。
[Abstract]:Barium ferrite sol was synthesized by sol-gel method using ferric nitrate, barium nitrate and citric acid as raw materials. Barium ferrite sol was adsorbed on the surface and micropore of porous ceramsite. Then the functional ceramsite is used as aggregate to prepare new cement-based composite absorbing materials. The phase, morphology, complex permittivity and complex permeability of the synthesized barium ferrite were studied. The results show that the synthesized barium ferrite has high purity, and the synthesis temperature has an effect on its crystallinity and crystal morphology. The barium ferrite calcined at 1000 鈩，
本文编号：2371933
[Abstract]:Barium ferrite sol was synthesized by sol-gel method using ferric nitrate, barium nitrate and citric acid as raw materials. Barium ferrite sol was adsorbed on the surface and micropore of porous ceramsite. Then the functional ceramsite is used as aggregate to prepare new cement-based composite absorbing materials. The phase, morphology, complex permittivity and complex permeability of the synthesized barium ferrite were studied. The results show that the synthesized barium ferrite has high purity, and the synthesis temperature has an effect on its crystallinity and crystal morphology. The barium ferrite calcined at 1000 鈩，
本文编号：2371933
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