Black thermal control blankets have been widely used in spacecraft for eliminating stray light around high-resolution optical instruments. However, the limited absorption in visible light range, the fast degradation upon hyperthermal atomic oxygen (AO) in low Earth orbit (LEO), and the poor adhesion of black coatings with substrate confined their applications into board solar spectrum and multi-layer interface engineering. In this work, a nanocomposite polyimide film containing a trisilanolphenyl POSS, a dye of solvent black 34, and a carbon black of CABOT M800 has been designed. With an ingredient of 20 wt% POSS, 5 wt% dye, and 10 wt% carbon black, the nanocomposite polyimide film PPIBC10 exhibited an ultra-low transmittance near zero in the range 200–2000 nm, a low reflectance below 5% in UV range and below 2% in VIS-IR range, and a low erosion yield of 0.49 ± 0.11 × 10⁻²⁴ cm³ atom⁻¹ upon a 2.27 × 10²⁰ atoms cm⁻² hyperthermal AO exposure, with an absorptance of 0.983, an emissivity of 0.86, and a coefficient of thermal expansion of 20 ppm ^oC⁻¹. SEM and XPS analysis indicated that a uniform SiO_x passivating network was formed on surface upon the hyperthermal AO exposure. The tensile strength decreased with increasing additives, and kept stable upon the AO exposure, for there was only sub-micrometer in erosion depth. The thermal expansion coefficients of the nanocomposite films are comparable to that of Kapton, which benefits interface engineering. The small granularity of tens of micrometers and good solubility in poly(amic acid) of additives POSS, dye, and carbon black benefit potential manufacture. This study suggests an ultra-black AO durable polyimide film for potential applications in LEO.

黑色热控制毯已被广泛用于航天器中，以消除高分辨率光学仪器周围的杂散光。但是，在可见光范围内的吸收受限，在低地球轨道（LEO）中由于高温原子氧（AO）的快速降解以及黑色涂层与基材的不良粘合性，将其应用于板状太阳光谱和多层界面工程中。在这项工作中，已经设计了包含三硅烷醇苯基POSS，溶剂黑34的染料和CABOT M800的炭黑的纳米复合聚酰亚胺薄膜。纳米复合聚酰亚胺薄膜PPIBC10具有20 wt％的POSS，5 wt％的染料和10 wt％的炭黑的成分，在200-2000 nm范围内显示出接近零的超低透射率，在5％以下的紫外线下具有低反射率范围并且在VIS-IR范围内低于2％，在2.27×10 ²⁰原子cm ^-2的高温AO暴露下，具有⁻²⁴  cm ³原子^-1，吸收率为0.983，发射率为0.86，热膨胀系数为20 ppm ^o C ^-1。SEM和XPS分析表明均匀的SiO _x高温AO暴露在表面形成钝化网络。拉伸强度随添加剂的增加而降低，并在暴露于AO时保持稳定，因为腐蚀深度只有亚微米。纳米复合膜的热膨胀系数与Kapton相当，这有利于界面工程。数十微米的小粒度以及添加剂POSS，染料和炭黑在聚（酰胺酸）中的良好溶解性有利于制造。这项研究提出了一种超黑AO耐久聚酰亚胺薄膜，可用于LEO中。