To improve the atomic oxygen (AO) resistance of the spacecraft resin matrix material, inorganic silica nanoparticles were filled into the epoxy resin. Samples of the epoxy/silica nanocomposites were prepared and AO exposure experiments were conducted in a ground-based AO effects simulation facility. The samples exhibited significantly less mass loss and erosion yield than the corresponding pristine epoxy resin. Analysis of the surface morphology, composition and chemical structures showed that some organic structures still resides on the nanocomposites surface after the AO exposure experiment. The silica nanoparticles and the organic structures could serve as a barrier to resist further erosion.
An experimental study on improving the atomic oxygen resistance of epoxy resin/silica nanocomposites
Polymer Engineering and Science, Greenwich ; 47 , 7 ; 1156-1162
2007
7 Seiten, 11 Bilder, 25 Quellen
Article (Journal)
English
Anwendung in der Luft- und Raumfahrt , atomares Gas , Barriereschicht , Epoxidharz , Erdatmosphäre , Erdumlaufbahn , Erosionskorrosion , FTIR-Spektroskopie , Mikrosilica , mineralischer Füllstoff , Nanopartikel , Nanoverbundwerkstoff , Oberflächeneigenschaft , Oxidationsbeständigkeit , Polymermatrix-Verbundwerkstoff , Rasterelektronenmikroskopie , Röntgenphotoelektronenspektroskopie , Sauerstoff , Sauerstoffdurchlässigkeit , Schadenanalyse
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