Here, we investigate a wearable-based IR and thermal stealth structure that effectively blocks IR and thermal radiation from a human body or device using a polyurethane–antimony tin oxide (PU–ATO) composite fiber. The aging time of the ATO sol prepared by a sol–gel method, and the concentration of ATO with respect to that of the PU matrix were optimized to prepare PU–ATO composite fibers that simultaneously have an appropriate mechanical strength (strength of ~4 MPa and strain of ~340%) and IR- and thermal radiation-shielding properties with ~98% IR light, as determined by Fourier transform IR spectroscopic studies. The fabricated PU–ATO composite fiber showed stable IR- and thermal radiation-shielding properties even when exposed to ten cycles of repeated temperature changes of −20 and +80 °C and long-term temperature changes for 30 days. In addition, the surface of the PU–ATO composite fiber was rendered hydrophobic to prevent the distortion of the IR and thermal radiation due to the wetting of the PU–ATO composite fiber with absorbed water. The PU–ATO composite fiber-based textile proposed herein can be applied in wearable IR- and thermal radiation-shielding technologies to shield IR signals generated by objects of diverse and complex shapes.

在这里，我们研究了基于可穿戴的IR和热隐身结构，该结构使用聚氨酯-锑锡氧化物（PU-ATO）复合纤维有效地阻挡了来自人体或设备的IR和热辐射。通过溶胶-凝胶法制备的ATO溶胶的老化时间以及相对于PU基体浓度的ATO浓度进行了优化，以制备同时具有适当机械强度（强度约为4 MPa）的PU-ATO复合纤维（傅里叶变换红外光谱研究确定）和约340％的应变）以及约98％的红外光的红外和热辐射屏蔽性能。即使暴露于-20个和+80°C的重复温度变化和30天的长期温度变化的十个循环中，制成的PU–ATO复合纤维仍具有稳定的IR和热辐射屏蔽性能。另外，PU-ATO复合纤维的表面具有疏水性，以防止由于PU-ATO复合纤维被吸收的水润湿而导致IR和热辐射变形。本文提出的PU–ATO复合纤维基纺织品可用于可穿戴的IR和热辐射屏蔽技术，以屏蔽由各种形状和复杂形状的物体产生的IR信号。