Electrically conductive polyaniline (PANI)/polyimide (PI) composite fabric was prepared by in situ polymerized aniline on PI fabric in the acid solution using ammonium persulfate as the oxidant. PANI nanoflowers and nanofibers was obtained on the surface of PI fabric by controlling the molar ratio of aniline/oxidant and the acidity of the polymerization solution. Field Emission Scanning Electron Microscope (FESEM) results demonstrated that a continuous PANI nanofiber network with an average fiber diameter of 80–100 nm was successfully constructed on PI fabric when the doping acid was HNO₃, the aniline to oxidant molar ratio was 4:5, and the pH value was 2.32. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis indicated that the PANI nanofibers was combined on PI fabric through hydrogen bonding. The conductivity of the composite fabric was 0.53 S/m, the contact angle of the composite fabric was increased from 50.6° to 84.7° due to the uniform nanofiber network structure, and the decomposition temperature (Td) of the composite fabrics was beyond 580.0 °C. Remarkably, the prepared PANI/PI composite fabric exhibited excellent electromagnetic wave absorption features (reflection loss of −57.99 dB), which implied it could be a good candidate for the electromagnetic wave absorbing materials.

以过硫酸铵为氧化剂，在酸性溶液中，在PI织物上原位聚合苯胺，制备导电聚苯胺（PANI）/聚酰亚胺（PI）复合织物。通过控制苯胺/氧化剂的摩尔比和聚合溶液的酸度，在PI织物表面获得了PANI纳米花和纳米纤维。场发射扫描电子显微镜 (FESEM) 结果表明，当掺杂酸为 HNO ₃时，在 PI 织物上成功构建了平均纤维直径为 80-100 nm 的连续 PANI 纳米纤维网络，苯胺与氧化剂摩尔比为4:5，pH值为2.32。傅里叶变换红外光谱 (FTIR) 和 X 射线光电子能谱 (XPS) 分析表明 PANI 纳米纤维通过氢键结合在 PI 织物上。复合织物的电导率为0.53 S/m，由于纳米纤维网状结构均匀，复合织物的接触角从50.6°增加到84.7° ，复合织物的分解温度（Td）超过580.0° C。值得注意的是，制备的 PANI/PI 复合织物表现出优异的电磁波吸收特性（反射损耗为 -57.99 dB），这意味着它可能是电磁波吸收材料的良好候选者。