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建立了基于Kubelka-Munk理论的红外隐身涂层发射率仿真计算模型。以Al粉颗粒作为颜料粒子,采用Maxwell-Garnett有效介质理论计算分析了涂层的等效折射率与波长的关系。从电磁波与颜料相互作用的机理出发,采用几何光学理论计算得到了涂层的吸收系数和散射系数。定量分析了铝粉颗粒粒径以及体积分数对涂层发射率的影响。结果表明,该模型对红外隐身涂层的制备具有一定的指导意义。
The simulation model of infrared stealth coating emissivity was established based on Kubelka-Munk theory. Using Al powder particles as pigment particles, the relationship between the equivalent refractive index of the coating and the wavelength was calculated by Maxwell-Garnett effective medium theory. Based on the mechanism of the interaction between electromagnetic wave and pigment, the absorption coefficient and scattering coefficient of the coating were calculated by using geometrical optics theory. The influence of aluminum particle size and volume fraction on the emissivity of the coating was quantitatively analyzed. The results show that the model has certain guiding significance for the preparation of infrared stealth coating.