Ultra-light aerogel heat insulation material with waterproof and moisture permeation functions and preparation method thereof

A technology of waterproof and moisture-permeable and waterproof and moisture-permeable membranes, which is applied in the field of clothing thermal insulation materials, can solve the problems of poor mechanical strength, hindering thermal insulation performance, and restrictions, and achieve the effects of reducing thermal conductivity, improving thermal insulation performance, and reducing heat loss

Active Publication Date: 2017-08-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its porosity is as high as 80-99.8%, and the pore size is generally between 1-100nm, which makes it have ultra-low thermal conductivity. However, the current preparation method of airgel materials is mainly the sol-gel method, and the obtained airgel materials are brittle. Large, poor mechanical strength and other shortcomings, so that it is greatly restricted in the actual application environment
Domestic patent CN20131020229

Method used

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  • Ultra-light aerogel heat insulation material with waterproof and moisture permeation functions and preparation method thereof
  • Ultra-light aerogel heat insulation material with waterproof and moisture permeation functions and preparation method thereof
  • Ultra-light aerogel heat insulation material with waterproof and moisture permeation functions and preparation method thereof

Examples

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Effect test

Embodiment 1

[0058] like figure 1 As shown, an ultra-light airgel thermal insulation material with waterproof and moisture-permeable function includes down-like structural fiber airgel 2 and a waterproof and moisture-permeable membrane 1 compounded on the down-like structural fiber airgel 2 .

[0059] like figure 2 As shown, the down-like structural fiber airgel 2 includes thick fibers 3 and thin fibers 4 .

[0060] The preparation method of the ultra-light airgel thermal insulation material with waterproof and moisture-permeable function is:

[0061] The first step: using electrospinning technology, inject 25g of cellulose acetate spinning solution with a mass fraction of 8% into a fine-needle syringe with a needle diameter of 0.38mm, and inject 25g of polyvinyl butyral with a mass fraction of 20% The spinning solution is injected into a thick needle syringe with a needle diameter of 1.2mm, and the two syringes are placed alternately, with non-woven fabric as the receiving substrate an...

Embodiment 2

[0068] like figure 1 As shown, an ultra-light airgel thermal insulation material with waterproof and moisture-permeable function includes down-like structural fiber airgel 2 and a waterproof and moisture-permeable membrane 1 compounded on the down-like structural fiber airgel 2 .

[0069] like figure 2 As shown, the down-like structural fiber airgel 2 includes thick fibers 3 and thin fibers 4 .

[0070] The preparation method of the ultra-light airgel thermal insulation material with waterproof and moisture-permeable function is:

[0071] The first step: using electrospinning technology, inject 25g of polyvinyl alcohol spinning solution with a mass fraction of 10% into a fine-needle syringe with a needle diameter of 0.28mm, and spin 20g of polycaprolactone with a mass fraction of 16% The liquid is injected into a thick needle syringe with a needle diameter of 1.1mm, and the two syringes are placed alternately, with non-woven fabric as the receiving substrate and the electro...

Embodiment 3

[0078] like figure 1 As shown, an ultra-light airgel thermal insulation material with waterproof and moisture-permeable function includes down-like structural fiber airgel 2 and a waterproof and moisture-permeable membrane 1 compounded on the down-like structural fiber airgel 2 .

[0079] like figure 2 As shown, the down-like structural fiber airgel 2 includes thick fibers 3 and thin fibers 4 .

[0080] The preparation method of the ultra-light airgel thermal insulation material with waterproof and moisture-permeable function is:

[0081] The first step: using electrospinning technology, inject 20g of polyvinylpyrrolidone spinning solution with a mass fraction of 12% into a fine-needle syringe with a needle diameter of 0.18mm, and inject 20g of polymethyl methacrylate with a mass fraction of 10% The spinning solution is injected into a thick needle syringe with a needle diameter of 1.0mm, and the two syringes are placed alternately, with non-woven fabric as the receiving su...

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Abstract

The invention provides an ultra-light aerogel heat insulation material with waterproof and moisture permeation functions and a preparation method thereof. The ultra-light aerogel heat insulation material with the waterproof and moisture permeation functions is characterized by comprising down-like structure fiber aerogel and a waterproof moisture permeation film compounded on the down-like structure fiber aerogel. The volume density of the heat insulation material is 1 to 300 mg/cm<3>; the hole porosity and small-pore-diameter structure is realized; the air convection can be prevented; the heat radiation is effectively reduced, so that the heat conduction coefficient can reach 0.015 to 0.023 W/(m k); meanwhile, the waterproof moisture permeation function is also realized by the heat insulation material, so that the garment use comfort and the heat insulation performance of the aerogel material are further improved.

Description

technical field [0001] The invention relates to the field of thermal insulation materials for clothing, in particular to an ultra-light airgel thermal insulation material with waterproof and moisture permeable functions obtained by compounding a down-like structural fiber airgel and a waterproof and moisture-permeable membrane with a very small pore size or a non-porous structure. Background technique [0002] At present, the most used thermal insulation materials for clothing are mainly cotton batting, down and other flakes and filling materials. In order to achieve a higher heat retention effect, the thickness of the batting must be increased, so that the product is too fluffy, which easily causes the wearer to be bloated and inconvenient to move. In addition, natural materials also have problems such as easy moisture absorption, poor strength, and easy insects. At the same time, limited production makes them expensive and difficult to meet the growing market demand for wa...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B9/04B32B37/00B32B33/00A41D31/02B32B37/12B32B37/10B32B37/06
CPCA41D31/02B32B9/045B32B27/06B32B33/00B32B37/00B32B37/06B32B37/10B32B37/1207B32B2037/1215B32B2307/304B32B2307/73B32B2437/00
Inventor 丁彬吴红炎曹雷涛张世超印霞孙刚俞建勇
Owner DONGHUA UNIV
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