抗紫外线涂层延缓氧化石墨烯薄膜光感速率变化

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中图分类号：TQ317.6 文献标志码：A 文章编号： 1000-5013（2025）06-0654-06

Abstract：Graphene oxide （GO） was dispersed in a waterborne polyurethane （WPU） matrix by a homogenizer，and a GO/WPU photosensitive film was prepared on a mirror stainless steel plate adopting the blade coating process. Subsequently，ultraviolet （UV） absorbers were dispersed in varnish to form an anti-UV varnish coating on the surface of the GO/WPU photosensitive film，in order to systematically investigate the effects of coating thickness and the types of UV absorbers on the film photosensitive properties. The results show that GO could be uniformly dispersed in the WPU matrix. Compared with the GO/WPU photosensitive film，when UV-531 was used as the UV absorber and the coating thickness was controlled at 0.2mm ，the photosensitive rate of the film was improved significantly，and the photosensitive change time was delayed obviously. The anti-UV coating significantly enhanced the hydrophobicityof the film with its water contact angle

reaching 80.27∘

Keywords：graphene oxide； waterborne polyurethane； photosensitive film； photostability；ultraviolet absorb-

er

石墨烯及其衍生材料因其优异的电学、力学和光学性能在能源、电子器件和复合薄膜等领域引起了广泛关注[1-2]。（剩余7378字）