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中文摘要：
采用溶胶-凝胶法和原位聚合法制备纳米钛酸钡（BaTiO3）和钛酸钡-聚苯胺（BaTiO3-PANI）复合材料。通过X-射线衍射（XRD）、红外光谱（FT-IR）和矢量网络分析（PNA）等测试手段对材料的物相、结构和吸波性能进行了表征和分析。结果表明：制备出的样品分别为四方晶相的纳米BaTiO3和BaTiO3-PANI复合材料。在0-6 000 MHz，BaTiO3-PANI复合材料的吸波性能较纯PANI有了很大的提高。当m（BaTiO3）/m（PANI）=4.0，吸收厚度为3 mm时，BaTiO3-PANI复合材料的吸波性能最佳，其最大吸收峰值为-14.4 dB，-5 dB频宽为1 114 MHz。
英文摘要：
Nano-BaTiO3 and BaTiO3-PANI composites were prepared by sol-gel method and in-situ polymerization. The phase, structure and wave-absorbing property of the materials were analyzed and characterized by XRD, FT-IR and vector network analyzer （PNA）. Results show that the samples are square crystalloid of nano-BaTiO3 and BaTiO3-PANI composites. The absorption ability of the BaTiO3-PANI composites is better than pure PANI in the frequency range of 0 — 6 000 MHz. When the mass ratio of BaTiO3 to PANI is 4.0 and absorption thickness is 3 mm, BaTiO3-PANI exhibits the best wave-absorbing property, of which the maximum absorption can reach -14.4 dB and the -5 dB bandwidth is 1 114 MHz.
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