The Total organic content analysis and its long-term forecast method for manned spacecraft crew cabin materials

摘要

The organic materials used in in the crew module in a confined space degradation of volatile gas,most of these gases are volatile organic compounds(VOC),is an important source of air pollution.Therefore, the test total organic content is one important criteria of the evaluation of the toxicity of cabin material.Presently evaluation method of the toxicity are mostly concerned about the short-term manned space flight material outgassing toxicity.This paper provide a method for evaluating a long-term manned flight materials outgassing toxicity.Using the outgassing gas evaluation device of crew module to test a rubber which used in cabin.The test method according to the standard Q/W 1155-2008《Detecting method of hazard gas from non-metal materials in spacecraft crew module》, collecting the outgassing products from materials in given condition, And quantitative analysis of the total organic content by gas chromatography.The method of quantitative analysis is n-pentane external standard.quantitative.The results show that the test device developed background pollution to meet the design requirements, the infection for the test results can be ignored.The content of VOC for the rubber is 1.93g/g.Base on the effect of mechanism of temperature-time for the material outgassing,we give the method for estimate the total organic content in long-term manned flight.