Morphological Evolutions and Optical Properties of Polymers in the Space Electric Field
The micro-nano structures of the polymer film surfaces have unique optical properties,which have potential applications in flexible electronics and display devices.The space electric field is an effective method to construct the surface morphology.The object of this study was photocurable polyurethane(PU),the comsol software was used to simulate the effects of dielectric constant,viscosity,surface tension,and voltage on the morphology of PU prepolymer in the space electric field.The results show that the PU transparent film containing columnar array microstructures with a height of 327 μm is prepared in a space electric field of 600 V.In the band of 380-750 nm,the luminous efficiency of the film is 18%higher than that before the film is placed,and the microstructures have no effect on the color temperature.
Space Electric FieldPolyurethane FilmMicrostructureAnalogue SimulationLuminous Efficiency
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