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基于静电纺丝技术和逐层自组装技术制备得到了组装层数分别为0、2、4和6的纳米TiO_2/纤维复合材料。基于SEM和FT-IR等性能测试与理论计算方法,获得了纳米TiO_2/纤维复合材料的结构和热辐射性能。在结构方面,随着TiO_2组装层数的增多,纳米TiO_2/纤维复合材料的平均纤维直径增大,TiO_2在组装层中的百分比也增大;在热性能方面,纳米电纺纤维组装TiO_2(2层)后,红外光谱透过率和辐射热导率均显著减小;随着组装TiO_2层数的增多,纳米TiO_2/纤维复合材料的辐射热导率得到了进一步的减小,指出了这是由于纳米TiO_2颗粒表现出很强的散射和吸收消光的结果。
Based on the electrospinning technology and layer by layer self-assembly technology, nano-TiO 2 / fiber composites with assembly layers of 0, 2, 4 and 6 respectively were prepared. The structure and thermal radiation properties of nano-TiO 2 / fiber composites were obtained based on the performance testing and theoretical calculation methods such as SEM and FT-IR. In the aspect of structure, the average fiber diameter of nano-TiO 2 / fiber composite increases and the percentage of TiO 2 in the assembled layer increases with the increase of the number of TiO 2 layers. In terms of thermal properties, nano-electrospun fibers assemble TiO 2 Layer), the infrared spectral transmittance and radiant thermal conductivity decreased significantly. With the increase of the number of assembled TiO 2 layers, the radiative thermal conductivity of the nano-TiO 2 / fiber composite material was further reduced, indicating that this is Due to the nano-TiO 2 particles showed strong scattering and absorption extinction results.