Title :
The influence of ozone on the property of envelop materials of near space vehicle
Author :
Guochang Lin ; Huifeng Tan
Author_Institution :
Post-doctoral Res. Center in Mater. Sci. & Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
The ozone aging of PE-EVOH (ethylene-vinyl alcohol copolymer) films, which is a kind of envelop material of near space vehicle, is studied in the paper. The ozone aging test of PE-EVOH films was performed in an ozone aging environmental apparatus with 600pphm ozone concentration. The mechanical property variation of the PE-EVOH film after ozone aging was investigated by mechanical tensile test and the results show that tensile strength of the PE-EVOH films decreases as the ozone aging time increases. The aging mechanism of the PE-EVOH film was analyzed using FTIR spectra analysis and atomic force microscopy (AFM) images. The results reveal that mechanical and physical reactions were occurred between the PE-EVOH film and ozone, which leads to the decline of mechanical property of the PE-EVOH film.
Keywords :
Fourier transform spectra; Young´s modulus; ageing; atomic force microscopy; infrared spectra; ozone; polymer blends; polymer films; space vehicles; tensile strength; FTIR spectra analysis; Young modulus; atomic force microscopy; envelop materials; ethylene-vinyl alcohol copolymer films; mechanical tensile test; near space vehicle; ozone aging; physical reactions; tensile strength; Aging; Films; Mechanical factors; Space vehicles; Surface morphology; Surface roughness; AFM; FTIR spectra; PE-EVOH; ozone aging; tensile strength;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang, China
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6022992
