泡沫红外消光影响因素的实验研究

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.

Experimental Study on Infrared Attenuation Factors of Foam

The infrared spectral and thermal imaging experiments on infrared attenuation factors of foam were carried out. The infrared spectral characteristics of solution determine the absorption peaks, with a stronger absorption for a higher content. The foam structure is an important factor of attenuation, the transmission intensity decreases by the times of transmission through foam interfaces, and the smaller bubble diameter it is, the less dosage is used with the same shield effect. Once the bubble diameter is much larger than radiation wavelength, the transmissivity will depend less on the sizes of beam. Temperature rising can increase the infrared absorption intensity in some extent. The grade of impact factors declines in the sequence of foam structure, spectral characteristics, refractive index of inner gas, bubble diameter, and temperature.