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    • 8. 发明授权
    • Method for net-shaping using aerogels
    • 使用气凝胶进行净整形的方法
    • US06258305B1
    • 2001-07-10
    • US09539199
    • 2000-03-29
    • C. Jeffrey BrinkerCarol S. AsheyScott T. ReedChunangad S. SriramThomas M. Harris
    • C. Jeffrey BrinkerCarol S. AsheyScott T. ReedChunangad S. SriramThomas M. Harris
    • B29C7100
    • B01J13/0091
    • A method of net-shaping using aerogel materials is provided by first forming a sol, aging the sol to form a gel, with the gel having a fluid component and having been formed into a medium selected from the group consisting of a powder, bulk material, or granular aerobeads, derivatizing the surface of the gel to render the surface unreactive toward further condensation, removing a portion of the fluid component of the final shaped gel to form a partially dried medium, placing the medium into a cavity, wherein the volume of said medium is less that the volume of the cavity, and removing a portion of the fluid component of the medium. The removal, such as by heating at a temperature of approximately less than 50° C., applying a vacuum, or both, causes the volume of the medium to increase and to form a solid aerogel. The material can be easily removed by exposing the material to a solvent, thereby reducing the volume of the material. In another embodiment, the gel is derivatized and then formed into a shaped medium, where subsequent drying reduces the volume of the shaped medium, forming a net-shaping material. Upon further drying, the material increases in volume to fill a cavity. The present invention is both a method of net-shaping and the material produced by the method.
    • 通过首先形成溶胶,使溶胶老化以形成凝胶,使凝胶具有流体成分并形成介质,提供使用气凝胶材料的网状成形方法,所述介质选自粉末,散装材料 或颗粒状aerobeads,衍生化凝胶的表面以使表面不反应进一步冷凝,去除最终成形凝胶的流体组分的一部分以形成部分干燥的介质,将介质置于空腔中,其中体积 所述介质小于空腔的体积,并且去除介质的流体组分的一部分。 诸如通过在大约低于50℃的温度下加热,施加真空或两者的去除使得介质的体积增加并形成固体气凝胶。 通过将材料暴露于溶剂,可以容易地除去材料,从而减小材料的体积。 在另一个实施方案中,将凝胶衍生化,然后形成成形介质,其中随后的干燥减小成形介质的体积,形成网状成形材料。 在进一步干燥时,材料的体积增加以填充空腔。 本发明既是净成形方法,也是由该方法制造的材料。
    • 10. 发明授权
    • Method of patterning an aerogel
    • 图案化气凝胶的方法
    • US08226839B1
    • 2012-07-24
    • US12480158
    • 2009-06-08
    • Scott T. Reed
    • Scott T. Reed
    • C03C15/00
    • C03C17/30C03C17/006C03C2217/425C03C2218/118C03C2218/33G03F7/0043G03F7/2014
    • A method for producing a pattern in an aerogel disposed as a coating on a substrate comprises exposing the aerogel coating to the vapors of a hydrophobic silane compound, masking the aerogel coating with a shadow photomask and irradiating the aerogel coating with ultraviolet (UV) irradiation. The exposure to UV through the shadow mask creates a pattern of hydrophobic and hydrophilic regions in the aerogel coating. Etching away the hydrophilic regions of the aerogel coating, preferably with a 1 molar solution of sodium hydroxide, leaves the unwetted and unetched hydrophobic regions of the aerogel layer on the substrate, replicating the pattern of the photomask. The hydrophobic aerogel pattern can be further exposed to UV irradiation if desired, to create a hydrophilic aerogel pattern.
    • 用于在气相凝胶中制备作为涂层涂布在基质上的图案的方法包括将气凝胶涂层暴露于疏水硅烷化合物的蒸气,用阴影光掩模掩蔽气凝胶涂层并用紫外线(UV)照射照射气凝胶涂层。 通过荫罩暴露于UV会在气凝胶涂层中产生疏水和亲水区域的图案。 蚀刻气溶胶涂层的亲水区域,优选用1摩尔浓度的氢氧化钠溶液离开基底上的气凝胶层的未经蚀刻和未蚀刻的疏水区域,复制光掩模图案。 如果需要,疏水性气凝胶图案可以进一步暴露于UV照射,以产生亲水性气凝胶图案。