Aerogel phase change thermal insulation material and preparation method thereof

Abstract

The invention provides an airgel phase-change thermal insulation material and a preparation method thereof. The airgel phase-change thermal insulation material provided by the present invention comprises: a thermal insulation layer, which is an airgel sponge-like structure; and a thermal insulation layer, which is compounded on one side of the thermal insulation layer by a predetermined bonding method, wherein the thermal insulation layer It includes a moisture-conducting fiber net layer, a heat-storage fiber net layer and a heat-insulating fiber net layer arranged in sequence and connected to each other through a non-woven needle punching method. In contact with the human body, the moisture-conducting fiber web layer is made of ordinary fibers, special-shaped hollow microfibers and crimped fibers, and the heat storage fiber web layer is made of phase-change cellulose fibers. The thermal insulation fiber net layer is a fiber net layer made of airgel polyimide fibers. The airgel phase-change thermal insulation material provided by the present invention also includes: a waterproof and moisture-permeable layer, which is compounded on the other side of the thermal insulation layer through a predetermined bonding method.

Description

technical field [0001] The invention belongs to the field of clothing functional materials, and in particular relates to an airgel phase-change thermal insulation material and a preparation method thereof. Background technique [0002] The most used thermal insulation materials for clothing are mainly cotton batting, down and other flakes. In order to achieve a higher heat-retaining effect, the thickness of the flakes must be increased, which causes the heat-retaining clothing to be too fluffy, causing the wearer to appear bloated or even inconvenient to move, thus limiting the further improvement of the heat-retaining performance of the clothing. In recent years, with the improvement of textile technology, people have higher and higher requirements for thermal clothing. They all hope that the thermal insulation materials of clothing are not only excellent in warmth retention, light and flexible, but also able to buffer the impact of external temperature changes on the human...

AI Technical Summary

Problems solved by technology

However, there are the following problems in the thermal insulation flakes processed by mixing phase change fibers and ordinary fibers: the phase change microcapsules on the surface of the phase change fibers are easy to fall off during production and use, which greatly reduces the intelligent adjustment of the thermal insulation flakes. temperature function; moreover, the breathability and softness of this thermal insulation flake are relatively poor, which greatly reduces the wearing comfort of thermal clothing

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