Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR PRODUCING AN AEROGEL MATERIAL
The present invention relates to a method for producing an aerogel material based on amorphous silicon dioxide, comprising the following steps: a) preparing a mixture containing silicon dioxide sol, alcohol and an acid-catalytically activatable hydrophobicization agent; b1) adding a base to the mixture formed in step a) and mixing the resulting mixture; b2) gelating the mixture obtained in step b2) containing silicon dioxide sol, wherein a silicon dioxide gel is created, and optional ageing of the gel; c) adding a hydrophobicization catalyst to the optionally aged silicon dioxide gel formed instep b2), in situ formation or controlled release of a hydrophobicization catalyst and initiating catalysed hydrophobicization of the silicon dioxide; d) removing the volatile components from the mixture formed in step c) by subcritical drying, wherein the aerogel material is formed, wherein at least steps b2) to d) are carried out in one and the same reactor.
本发明涉及一种用于生产基于无定形二氧化硅的气凝胶材料的方法，该方法包括以下步骤：a)制备包含硅溶胶、醇和能通过酸催化活化的疏水剂的混合物；b1)向步骤a)中形成的混合物中加入碱并混合所得混合物；b2)使步骤b2)中获得的包含硅溶胶的混合物凝胶化，从而形成硅凝胶，并且任选地使该凝胶老化；c)向步骤b2)中形成的硅凝胶中添加疏水催化剂，并任选地使该硅凝胶老化，原位形成或受控制释放疏水催化剂，并引起硅凝胶的催化疏水化；d)通过亚临界干燥除去步骤c)中形成的混合物的挥发性成分，从而形成气凝胶材料，其中至少步骤b2)至d)在同一反应器中进行。
METHOD FOR PRODUCING AN AEROGEL MATERIAL
The present invention relates to a method for producing an aerogel material based on amorphous silicon dioxide, comprising the following steps: a) preparing a mixture containing silicon dioxide sol, alcohol and an acid-catalytically activatable hydrophobicization agent; b1) adding a base to the mixture formed in step a) and mixing the resulting mixture; b2) gelating the mixture obtained in step b2) containing silicon dioxide sol, wherein a silicon dioxide gel is created, and optional ageing of the gel; c) adding a hydrophobicization catalyst to the optionally aged silicon dioxide gel formed instep b2), in situ formation or controlled release of a hydrophobicization catalyst and initiating catalysed hydrophobicization of the silicon dioxide; d) removing the volatile components from the mixture formed in step c) by subcritical drying, wherein the aerogel material is formed, wherein at least steps b2) to d) are carried out in one and the same reactor.
本发明涉及一种用于生产基于无定形二氧化硅的气凝胶材料的方法，该方法包括以下步骤：a)制备包含硅溶胶、醇和能通过酸催化活化的疏水剂的混合物；b1)向步骤a)中形成的混合物中加入碱并混合所得混合物；b2)使步骤b2)中获得的包含硅溶胶的混合物凝胶化，从而形成硅凝胶，并且任选地使该凝胶老化；c)向步骤b2)中形成的硅凝胶中添加疏水催化剂，并任选地使该硅凝胶老化，原位形成或受控制释放疏水催化剂，并引起硅凝胶的催化疏水化；d)通过亚临界干燥除去步骤c)中形成的混合物的挥发性成分，从而形成气凝胶材料，其中至少步骤b2)至d)在同一反应器中进行。
METHOD FOR PRODUCING AN AEROGEL MATERIAL
生产气凝胶材料的方法
NUMRICH UWE (Autor:in) / LAZAR BJORN (Autor:in) / OST KARL (Autor:in) / KOEBEL MATTHIAS (Autor:in) / STOJANOVIC ANA (Autor:in) / HUBER LUKAS (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
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