Nonwoven Molecular Sieve Package on Vacuum Interlayer of Cryogenic Insulated Cylinder
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摘要: 为改进低温吸附剂在低温绝热气瓶制造中的应用工艺，采用高分子无纺布对出炉时的低温吸附剂分子筛实施密封包装，这种新方法可以免去吸附剂在装填前的活化工艺、减少工艺成本和能源消耗，有助于提高吸附剂的使用性能。针对所选择的高分子无纺布材料是否对低温绝热气瓶真空夹层带来出气污染进行了试验研究。介绍了高分子无纺布出气试验装置、试验方法及试验结果。给出了在常温下和高温下试验的出气速率曲线。试验表明，所选择的高分子无纺布出气量远小于多层绝热材料的出气量，因而对低温绝热气瓶真空夹层的影响可忽略。Abstract: In order to improve the application process of cryogenic adsorbent in cryogenic insulated cylinders,a new method of sealed packaging of low temperature adsorbent molecular sieve was introduced by using polymer non-woven fabric.This will eliminate the activation process of adsorbent before loading,reduce the process cost and energy consumption,and help to improve the performance of adsorbent.In this paper,whether the selected polymer non-woven material can pollute the vacuum interlayer of cryogenic insulated cylinder was studied.The equipment,test steps and test results of the material outgassing test for polymer nonwoven fabrics are also introduced.Experiments show that the outgassing rate of polymer nonwovens is much lower than that of multi-layer insulation materials,so the influence on the vacuum interlayer of cryogenic insulated cylinder can be neglected.
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