A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of fiber-reinforced flexible silica aerogel
The invention belongs to the technical field of aerogel preparation, and discloses a preparation method of a fiber-reinforced flexible silica aerogel. The preparation method comprises the following steps: designing fibers into a comb tooth shape; taking and uniformly mixing a silicon source, ethanol and water, sequentially adding an NH4F solution and ammonia water, and uniformly stirring to obtaina silica sol, wherein the silicon source is a composite silicon source composed of a silicon source A and a silicon source B, the silicon source A is at least one of alkyl trialkoxysilanes, and the silicon source B is at least one of dialkyldialkoxysilane and hydroxyl silicone oil; soaking the fibers into the silica sol, and standing and aging after soaking to obtain a silica gel; and carrying out solvent replacement on the silica gel, and drying to obtain the product. The aerogel prepared in the invention has good hydrophobic property and greatly improved deformability and flexibility.
本发明属于气凝胶的制备技术领域，公开一种纤维增强柔性二氧化硅气凝胶的制备方法。将纤维设计成梳齿状；取硅源、乙醇和水混匀，之后依次加入NHF溶液和氨水搅拌均匀得到硅溶胶；所述硅源为硅源A和硅源B组成的复合硅源，硅源A为烷基三烷氧基硅烷中的至少一种，硅源B为二烷基二烷氧基硅烷、羟基硅油中的至少一种；将纤维浸渍于硅溶胶中，浸渍完成后静置，老化，得到二氧化硅凝胶；将二氧化硅凝胶进行溶剂置换，再干燥，即得。本发明制备得到的气凝胶具有良好的疏水特性以及变形能力和柔韧特性大大提高。
Preparation method of fiber-reinforced flexible silica aerogel
The invention belongs to the technical field of aerogel preparation, and discloses a preparation method of a fiber-reinforced flexible silica aerogel. The preparation method comprises the following steps: designing fibers into a comb tooth shape; taking and uniformly mixing a silicon source, ethanol and water, sequentially adding an NH4F solution and ammonia water, and uniformly stirring to obtaina silica sol, wherein the silicon source is a composite silicon source composed of a silicon source A and a silicon source B, the silicon source A is at least one of alkyl trialkoxysilanes, and the silicon source B is at least one of dialkyldialkoxysilane and hydroxyl silicone oil; soaking the fibers into the silica sol, and standing and aging after soaking to obtain a silica gel; and carrying out solvent replacement on the silica gel, and drying to obtain the product. The aerogel prepared in the invention has good hydrophobic property and greatly improved deformability and flexibility.
本发明属于气凝胶的制备技术领域，公开一种纤维增强柔性二氧化硅气凝胶的制备方法。将纤维设计成梳齿状；取硅源、乙醇和水混匀，之后依次加入NHF溶液和氨水搅拌均匀得到硅溶胶；所述硅源为硅源A和硅源B组成的复合硅源，硅源A为烷基三烷氧基硅烷中的至少一种，硅源B为二烷基二烷氧基硅烷、羟基硅油中的至少一种；将纤维浸渍于硅溶胶中，浸渍完成后静置，老化，得到二氧化硅凝胶；将二氧化硅凝胶进行溶剂置换，再干燥，即得。本发明制备得到的气凝胶具有良好的疏水特性以及变形能力和柔韧特性大大提高。
Preparation method of fiber-reinforced flexible silica aerogel
一种纤维增强柔性二氧化硅气凝胶的制备方法
YAO DONGJIA (author) / DONG HUINA (author) / YUAN LIJUAN (author) / LIU XIZONG (author) / YANG CHAO (author) / NIU LIWEI (author) / ZHANG DONGSHENG (author) / ZHANG JICHENG (author)
2020-04-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
Preparation method of fiber-reinforced silicon dioxide aerogel
| European Patent Office | 2020
Preparation method of sepiolite fiber reinforced silicon dioxide aerogel
| European Patent Office | 2023