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通过红外光谱实验和红外热成像实验,研究了影响泡沫红外消光的因素,结果表明:泡沫溶液的红外光谱特征决定红外光谱吸收峰位,且溶质浓度越高,吸收越强;泡沫结构是造成光线强烈衰减的重要原因,透射光强随光线穿过泡沫液膜界面的次数成指数衰减,泡沫直径越小,达到相同遮蔽效果的泡沫溶液的用量就越少;当泡沫直径远大于入射光线波长时,透射比随光束大小变化不大;泡沫溶液升温可在一定程度上增强泡沫的红外吸收强度。各因素影响程度从大到小的次序为:泡沫结构,红外光谱特征,内充气体折射率,泡沫直径,温度。
Infrared spectroscopy experiments and infrared thermal imaging experiments were conducted to study the factors influencing infrared extinction of foam. The results show that the infrared spectral characteristics of foam solution determine the absorption peak of infrared spectrum, and the higher the solute concentration, the stronger the absorption; the foam structure is the cause of light The important reason of strong attenuation is the exponential decay of transmitted light intensity with the number of times the light passes through the foam liquid membrane interface. The smaller the foam diameter, the less the amount of foam solution reaching the same shielding effect. When the foam diameter is much larger than the incident light wavelength , The transmittance changes with the beam size is not big; foam solution temperature increase to a certain extent, enhance the foam infrared absorption intensity. The order of influence of each factor is as follows: foam structure, infrared spectrum characteristics, refractive index of inflatable body, foam diameter and temperature.