High-strength flexible polysiloxane aerogel and preparation method thereof

A technology of polysiloxane and airgel, which is applied in the field of preparation of high-strength flexible superhydrophobic polysiloxane airgel, and can solve problems such as low specific surface area, uneven airgel pore structure, and harsh control conditions
CN112708277AInactive Publication Date: 2021-04-27BEIJING UNIV OF CHEM TECH
7 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2021-04-27
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a high-strength flexible polysiloxane aerogel material and a preparation method thereof. The method comprises the following steps of: firstly, synthesizing a linear flexible polysiloxane monomer, then taking polyalkoxy polyhedral oligomeric silsesquioxane as a cross-linking agent, changing the proportion of side groups in the polysiloxane monomer and the ratio of the polysiloxane monomer to the polyhedral oligomeric silsesquioxane cross-linking agent, and preparing a series of high-strength flexible super-hydrophobic polysiloxane aerogel materials by adopting a sol-gel method and normal-pressure drying. The preparation process is simple, the mechanical property is excellent, normal-pressure drying is adopted, the material is suitable for industrial large-scale production and can be applied to the fields of adsorbents, thermal insulation materials, thermal insulation materials and the like, and the preparation method and variety of the aerogel material are expanded.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of airgel porous multi-material preparation, in particular to a preparation method of high-strength flexible superhydrophobic polysiloxane airgel. Background technique

[0002] Aerosilica has attracted much attention in the past few decades due to its unique three-dimensional nanostructure. This special structure endows it with characteristics such as low density, high porosity, ultra-low thermal conductivity and high specific surface area, making it widely used in aerospace, capacitors, absorbents, heat insulation materials, sound insulation materials, phase change materials, adsorbents It has broad application prospects in the fields of catalyst support and so on. However, the nanoscale framework structure of aerosil leads to its fragile mechanical properties, which severely limits its practical applications. Therefore, improving the brittleness of silica airgel and improving its mechanical properties has become t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More