Silicon dioxide aerogel composite thermal insulation fabric and preparation method thereof

Abstract

The invention discloses a silicon dioxide aerogel composite thermal insulation fabric and a preparation method thereof. The silicon dioxide aerogel composite thermal insulation fabric is mainly formedby weaving composite fibers with a shell-core structure, a core material of the composite fibers is a modified long fiber, and a shell material of the composite fibers is mainly formed by mixing modified silicon dioxide aerogel and a fiber base material; the composite fiber obtained by compounding the modified long fiber and the shell material is good in heat insulation and preservation effect, high in antibacterial rate and excellent in mechanical property, the heat preservation fabric prepared from the composite fiber is good in washing resistance, the heat preservation, heat insulation andantibacterial properties are not obviously reduced after washing is conducted for 30 times, the service life is long, and high practical value is achieved.

Description

technical field [0001] The invention relates to the technical field of fabrics, in particular to a silica airgel composite thermal insulation fabric and a preparation method thereof. Background technique [0002] Whenever the weather cools down, people usually choose to add clothes to resist the cold, but wearing too many clothes will cause cumbersome and inconvenient problems for people, especially when people need to attend some formal occasions, they urgently need a Clothing made of light and warm fabrics to meet people's needs. [0003] Silica airgel is a material with a porous network structure, which has a high specific surface area, low thermal conductivity, and low refractive index. The clothes made by adding it to the fabric have ultra-thin, thermal insulation, and hydrophobic properties. Excellent air permeability, but silica airgel has poor mechanical properties, brittle and easy to crack, which limits its development; at present, there are two main methods for i...

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Problems solved by technology

[0002] Whenever the weather cools down, people usually choose to add clothes to resist the cold, but wearing too many clothes will cause cumbersome and inconvenient problems for people, especially when people need to attend some formal occasions, they urgently need a Clothing made of light and warm fabrics to meet people's needs

[0003] Silica airgel is a material with a porous network structure, which has a high specific surface area, low thermal conductivity, and low refractive index. The clothes made by adding it to the fabric have ultra-thin, thermal insulation, and hydrophobic properties. Excellent air permeability, but silica airgel has poor mechanical properties, brittle and easy to crack, which limits its development; at present, there are two main methods for introducing silica airgel into fabrics, one is to directly incorporate silica airgel Silica airgel is coated on the surface of fabrics; the other is to directly mix silica with spinning solution to make fabrics; the silica in the fabrics prepared by the former will gradually lose with daily use and washing process, And the thermal insulation performance of the thermal insulation fabric gradually decreases until it disappears; in the second method, because the silica airgel is prone to agglomeration in the spinning solution, it is easy to cause the blockage of the outlet of the spinning pipeline and increase the maintenance cost of the machine. The direct addition of silica airgel also has a certain effect on the fiber properties

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