Optically transparent silica aerogel with high specific surface area and low density based on tetramethyl orthosilicate (TMOS) were prepared by using a two-step sol-gel process. Obtained aerogels are more transparent than conventional samples, and the refractive index is well controlled in the acetonitrile supercritical drying process. We developed monolithic aerogels with a density of 0.04g/cm3 as space dust capturer. The microstructure and morphology of highly transparence silica aerogels were characterized by the specific surface area, SEM, UV-Vis and the pore size distribution techniques. The results shown that highly transparence silica aerogels are with excellent performance in physical properties, such as high optical transmittance (86.4%, 800 nm), low density (0.04 g/cm3), high specific surface area (925.4 m /g) and large pore volume (2.4 cm3/g). Which are critical characteristics for practical applications of highly transparent silica aerogel, particularly in particle capture areas, for easy observation and lossless capture.


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    Title :

    Fabrication and properties of optically transparent silica aerogels for hypervelocity particle capture


    Contributors:
    Guangwu, Liu (author) / Yangang, Liu (author)


    Publication date :

    2016-07-01


    Size :

    461815 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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