本发明公开了一种复合薄膜及其制备方法 和在防冰除冰中的应用，所述复合薄膜包括基底 和附着在基底上的具有光热转换功能聚合物；所 述复合薄膜具有褶皱结构和多孔结构。本申请制 备的复合薄膜在白天太阳光照充足的时候，利用 薄膜分级结构方面的优势和聚吡咯的光热转换 性能，有效吸收太阳光并转化成热能，复合薄膜 表面温度升高，在400s内从室温21 .3℃升到88 .4 ℃，可在太阳光光照条件下维持表面无冰的状 态，且样品表面温度的变化受光照位置变化的影 响较小；夜晚无光照时，对复合薄膜进行通电，使 电热效果发挥作用。光电热三者协同作用可使复 合薄膜表面维持全天无冰的状态，不必掺杂多种 材料即可实现光电热转换的协同作用，维持全天 表面无冰的状态。 

The present invention discloses a composite film and its preparation method and application in anti-icing and de-icing, said composite film comprising a substrate and a polymer having a photo-thermal conversion function attached to the substrate; the said composite film has a pleated structure and a porous structure. The composite film prepared in this application has a pleated structure and a porous structure. The composite film prepared in this application utilizes the advantages of the hierarchical structure of the film and the porous structure during the daytime when the sunlight is sufficient. The composite film prepared in this application can effectively absorb and convert sunlight when there is sufficient sunlight in the daytime by utilizing the advantages of the hierarchical structure of the film and the photothermal conversion performance of polypyrrole, effectively absorbs sunlight and converts it into heat energy, and the surface temperature of the composite film increases. The surface temperature of the composite film rises from room temperature of 21.3℃ to 88.4℃ in 400s. ℃, can be maintained under the sunlight illumination conditions of the surface of the ice-free state, and the surface temperature of the sample The surface temperature of the samples was less affected by the change of illumination position; at night, without illumination, the surface temperature of the composite film increased from 21.3℃ to 88.4℃. The composite film was energized at night when there was no light to make the At night, when there is no light, the composite film is energized, so that the effect of electric heat plays a role. When there is no light at night, the composite film is energized, so that the electric heat effect comes into play. The synergistic effect of photoelectricity and heat can make the surface of the composite film maintain the ice-free state all day long. materials can realize the synergistic effect of photoelectricity and heat conversion to maintain a full-day The synergistic effect of photovoltaic heat conversion can be realized without mixing multiple materials, maintaining an ice-free surface all day.