Aerogel and temperature-sensitive hydrogel compound heat-insulating and heat-preserving glass

Abstract

The invention discloses aerogel and temperature-sensitive hydrogel compound heat-insulating and heat-preserving glass, which comprises a cavity formed by glass, wherein the temperature-sensitive hydrogel is filled in the cavity, the aerogel is dispersed in the temperature-sensitive hydrogel, the aerogel is hydrophobically modified porous SiO2 aerogel, and the temperature-sensitive hydrogel is polyacrylamide temperature-sensitive hydrogel or epoxy copolymer temperature-sensitive hydrogel. After the aerogel and the temperature-sensitive hydrogel are compounded, the deformation influence on an aerogel framework caused by long-term soaking of liquid can be resisted, so that the heat insulation and heat preservation characteristics of the heat insulation and heat preservation glass are remarkably enhanced, and the service life of the heat insulation and heat preservation glass is prolonged.

Description

technical field [0001] The invention belongs to the field of personal care, and in particular relates to a heat-insulating glass composited with airgel and temperature-sensitive hydrogel and a preparation method thereof. Background technique [0002] Airgel is a highly porous material formed by removing the liquid solvent in the gel while maintaining the three-dimensional network structure of the gel. In the 1930s, Kistler successfully prepared aerogels; since the 1970s, sol-gel technology has developed rapidly, and the related properties of aerogels, such as ultra-high porosity (80-99.8%), high specific Surface area (100-1600㎡ / g), ultra-low density (0.004-0.500g / cm 3 ) and other properties, it has broad application prospects in the fields of optics, electricity, acoustics, thermal and catalysis. [0003] Airgel has significant advantages as a high-temperature insulation product. The main principle is (1) convection: when the diameter of the pores in the airgel is less th...

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Problems solved by technology

However, mixing airgel and temperature-sensitive hydrogel also has some disadvantages. For example, one of the most obvious defects is that the long-term immersion of temperature-sensitive hydrogel will make the airgel skeleton collapse. If once the airgel If the skeleton structure collapses, most of the nanopores will be lost, thus making the product lose its original heat preservation function

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