Compatibility test of a complex film in emiction with additive used in space station

摘要

A new nine layer film of liquid tank in China space station is used to store emiction with additive in urine treatment subsystem. It is the main material for storing strongly corrosive medium. There should be no leakage during the storing process. Compatibility of the nine layer film with emiction with additive is very important. In order to test the life of this material, experiment for compatibility test is performed. 1-liter complex film bag made by this film is designed to store the emiction with additive. The compatibility test and mechanical properties test showed that the nine layers complex film has good compatibility with emiction with additive used in in China space station. The height of nine layers film decreases by 5% after 90 days and it decreases by 13.6% after 750 days. Stretching intensity and stretching strain decrease during the storage process, while the elongation at break has no change basically. The nine layers film material offers a new method for the design and application of liquid container in space station.