【摘要】 论述了温度对泡沫衰变过程,对泡沫表面膜性质(包括表面吸附、Marangoni效应、表面弹性和表面粘度)和对表面活性剂溶液的影响。结论是:(1)低温时,主要是气体扩散;高温时,泡沫破灭由顶端开始,泡沫体积随时间延长而有规律地减小;(2)随温度升高,吸附量减少,分子独占面积增大,表面粘度降低,Marangoni效应作用减弱,表面弹性降低,导致泡沫稳定性降低;(3)随温度升高,泡沫体系的表面张力减小,有利于泡沫的稳定性提高,但此时表面张力不是影响泡沫稳定性的主导因素。另外,温度升高,溶液粘度降低,排液速率加快,泡沫稳定性下降。更多还原

【Abstract】 The effects of temperature on decay process of foam and surfactant solution were discussed. The effects of temperature on such properties of foam surface film as adsorption, Marangoni effect and surface elasticity and viscosity were also stated. Some conclusions obtained were as follows: (l)Gas diffusion was key when temperature was lower. Foam begins to shatter from peak and foam volume decreases regularly with the increase of time when temperature was higher. (2)With the increase of temperature, the decreased adsorbance and surface viscosity, the increased area occupied by single molecule, the shrinkaged Marangoni effect and foam stability decline as a result of decreased surface elasticity can be observed. (3) With the increase of temperature, the surface tension of foam system decreases. It was favor of improving foam stability, however it was not a dominant factor. The viscosity of solution also decreases with the increase of temperature and thus faster delivery speed can deteriorate foam stability.更多还原