Method for Continuously Preparing Core-Shell Phophilic Bipolar Composite Airgel Powder

An airgel particle and core-shell technology, which is applied in the field of airgel, can solve the problems of uneven processing and dispersion, and the decline of heat insulation properties of post-processed products, so as to achieve excellent dispersion and improve practicability

Active Publication Date: 2022-05-13
TAIWAN AEROGEL TECH MATERIAL CO LTD
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  • Abstract
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Problems solved by technology

[0008] In order to improve the past problems such as uneven dispersion of single hydrophilic or hydrophobic airgel powder in post-processing or the decline in heat insulation properties of post-processing products

Method used

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  • Method for Continuously Preparing Core-Shell Phophilic Bipolar Composite Airgel Powder
  • Method for Continuously Preparing Core-Shell Phophilic Bipolar Composite Airgel Powder
  • Method for Continuously Preparing Core-Shell Phophilic Bipolar Composite Airgel Powder

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Embodiment Construction

[0030] In order to make the above and / or other purposes, effects, and features of the present invention more obvious and understandable, the preferred implementation modes are specifically cited below, which are described in detail as follows:

[0031] The continuous preparation technology of the core-shell bipolar airgel powder in the embodiment of the present invention can prepare shell surface hydrophilic-core hydrophobic airgel particles and shell surface hydrophobic-core hydrophilic airgel particles, and The main functions of its preparation method will be clearly presented below.

[0032] Please see first figure 1 , which discloses a method for preparing airgel particles according to an embodiment of the present invention, comprising the following steps: a mixing step (S1), a hydrolysis step (S2), a condensation and dispersion step (S3), and a post-processing step (S4).

[0033] Mixing step (S1): The hydrophilic silicon alkoxide compound is one or more substances select...

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Abstract

The invention relates to the field of airgel, in particular to a method for continuously preparing core-shell affinity-phobic bipolar composite airgel powder. A method for preparing a core-shell hydrophilic bipolar composite airgel powder is as follows: a mixing step: mixing a hydrophilic silicon alkoxide compound, a hydrophobic alkyl-substituted silicon alkoxide compound, and an organic mixed solvent to form a mixed solution; a hydrolysis step : the acid catalyst is added to the mixed solution for hydrolysis reaction; condensation and dispersion step: the alkali catalyst is added to the mixed solution to carry out the condensation reaction, and a dispersion solvent is added during the condensation reaction, and stirred, so that the mixed solution is phase-separated during the stirring process and Gelation to form core-shell affinity bipolar airgel particles. After filtration and drying, the core-shell affinity-phobic bipolar airgel powder can be obtained, thereby improving the overall production speed of core-shell affinity-phobic bipolar airgel particles and powders, improving the mixing efficiency of post-processing and improving the heat insulation effect of the product .

Description

technical field [0001] The invention relates to the field of airgel, in particular to a method for continuously preparing core-shell affinity-phobic bipolar composite airgel powder. Background technique [0002] Airgel is a porous material with a three-dimensional network structure, and is a technological product with low density, high specific surface area, and low thermal conductivity. It is currently mainly used in heat insulation materials. Airgel powder has high porosity (the pore content accounts for more than 90%) and extremely low bulk density (about 0.04~0.2g / cm 3 ). Due to the high porosity of the aerogel, the specific surface of the aerogel is extremely large (generally, the specific surface area of ​​the silica aerogel is > 500m 2 / g). In addition, the functionality of airgel is related to the proportion of pores not occupied by solvents, so it is expected that the added airgel will achieve effective functionality, such as: light weight, high heat insulatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08G77/26C08G77/24C08G77/20C08L83/08C08L83/07
CPCC08J9/28C08G77/26C08G77/24C08G77/20C08J2383/08C08J2383/07
Inventor 陈建宏
Owner TAIWAN AEROGEL TECH MATERIAL CO LTD
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