真空中材料出气过程曾有Dayton,Schram,Jaeckel分别给出过理论假设和模型,这些理论仍为当前研究出气过程的基本依据。 但是人们早已发现,当测量非晶体材料,例如:塑料、橡胶等的出气过程时,实验与理论之间仍然有矛盾。1964年我们曾提出了“双重叠加扩散”和“非均匀浓度扩散”两个理论模型,能够解释实验结果中的各种现象。 在测量出气速率的工作中,我们还对实验方法做了改进。 The hypothesis and model have been given respectively by Dayton, Schram and Jaeckel in the process of material evacuation in vacuum. These theories are still the basic basis for the current research of gas evacuation. However, it has long been found that there is still a contradiction between experiment and theory when measuring the exit process of non-crystalline materials, such as plastics and rubber. In 1964, we proposed two theoretical models, “double overlapping diffusion” and “non-uniform concentration diffusion”, which can explain various phenomena in the experimental results. In the work of measuring the gas velocity, we also made improvements to the experimental method.