Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing hyperelastic silicon oxide nano ceramic aerogel based on graphene as template
The invention relates to the technical field of ceramic preparation, in particular to a method for preparing hyperelastic silicon oxide nano ceramic aerogel based on graphene as a template. The preparation method comprises the following steps: firstly, carrying out hydrothermal treatment, freeze drying and thermal annealing treatment on a graphene oxide solution with a certain concentration to prepare porous graphene aerogel; then, depositing organic silicon sources with different concentrations on the graphene aerogel through vapor deposition, completely attaching organic silicon to the surfaces of inner and outer graphene sheet layers through a vacuum auxiliary means, and forming a framework and organic silicon two-phase body; then heating and curing to form an interlayer bracket composite aerogel; and finally, heating the aerogel composite material in an air or oxygen flowing atmosphere to obtain the superelastic silicon oxide nano ceramic aerogel. The preparation method has the beneficial effects that the superelastic silicon oxide nano ceramic aerogel prepared by taking the graphene aerogel as a template has the characteristics of flexibility, light weight, high purity and superelasticity; and the method has the advantages of simple preparation process, low cost, easy control of preparation conditions, short synthesis period, low energy consumption and the like.
本发明涉及陶瓷制备技术领域，具体为一种基于石墨烯为模版制备超弹性氧化硅纳米陶瓷气凝胶的方法；首先利用一定浓度的氧化石墨烯溶液经水热、冷冻干燥以及热退火处理，制备成多孔石墨烯气凝胶；然后将石墨烯气凝胶通过气相沉积不同浓度有机硅源，利用真空辅助手段使有机硅完全附着于石墨烯内外片层表面，形成骨架、有机硅二相体；之后通过加热将其固化形成夹层支架复合气凝胶；最后在空气或氧气流动气氛下加热处理气凝胶复合材料得到超弹性氧化硅纳米陶瓷气凝胶；其有益效果在于：以石墨烯气凝胶为模版制备得到的超弹性氧化硅纳米陶瓷气凝胶具有柔性轻质、高纯度、超弹性的特点；该方法具有制备工艺简单、成本低、制备条件易于控制、合成周期短、能耗低等优点。
Method for preparing hyperelastic silicon oxide nano ceramic aerogel based on graphene as template
The invention relates to the technical field of ceramic preparation, in particular to a method for preparing hyperelastic silicon oxide nano ceramic aerogel based on graphene as a template. The preparation method comprises the following steps: firstly, carrying out hydrothermal treatment, freeze drying and thermal annealing treatment on a graphene oxide solution with a certain concentration to prepare porous graphene aerogel; then, depositing organic silicon sources with different concentrations on the graphene aerogel through vapor deposition, completely attaching organic silicon to the surfaces of inner and outer graphene sheet layers through a vacuum auxiliary means, and forming a framework and organic silicon two-phase body; then heating and curing to form an interlayer bracket composite aerogel; and finally, heating the aerogel composite material in an air or oxygen flowing atmosphere to obtain the superelastic silicon oxide nano ceramic aerogel. The preparation method has the beneficial effects that the superelastic silicon oxide nano ceramic aerogel prepared by taking the graphene aerogel as a template has the characteristics of flexibility, light weight, high purity and superelasticity; and the method has the advantages of simple preparation process, low cost, easy control of preparation conditions, short synthesis period, low energy consumption and the like.
本发明涉及陶瓷制备技术领域，具体为一种基于石墨烯为模版制备超弹性氧化硅纳米陶瓷气凝胶的方法；首先利用一定浓度的氧化石墨烯溶液经水热、冷冻干燥以及热退火处理，制备成多孔石墨烯气凝胶；然后将石墨烯气凝胶通过气相沉积不同浓度有机硅源，利用真空辅助手段使有机硅完全附着于石墨烯内外片层表面，形成骨架、有机硅二相体；之后通过加热将其固化形成夹层支架复合气凝胶；最后在空气或氧气流动气氛下加热处理气凝胶复合材料得到超弹性氧化硅纳米陶瓷气凝胶；其有益效果在于：以石墨烯气凝胶为模版制备得到的超弹性氧化硅纳米陶瓷气凝胶具有柔性轻质、高纯度、超弹性的特点；该方法具有制备工艺简单、成本低、制备条件易于控制、合成周期短、能耗低等优点。
Method for preparing hyperelastic silicon oxide nano ceramic aerogel based on graphene as template
一种基于石墨烯为模版制备超弹性氧化硅纳米陶瓷气凝胶的方法
ZHANG QIANGQIANG (Autor:in) / HE PENG (Autor:in) / ZHANG BAOQIANG (Autor:in) / ZHANG XINGYI (Autor:in)
14.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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