Nanofiber thermal insulation material and preparation method thereof

A nanofiber and thermal insulation layer technology, applied in the field of nanocomposite fabrics and their preparation, can solve the problems of poor thermal insulation performance, lack of far-infrared self-heating function, complicated preparation process of aerogel, etc., and achieves high moisture permeability. Effect

Pending Publication Date: 2022-07-08
昆承新材料科技江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of airgel at this stage is complex and expensive
And this material does not have far-infrared self-heating function, which will be poor in thermal performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Nanofiber thermal insulation material and preparation method thereof
  • Nanofiber thermal insulation material and preparation method thereof
  • Nanofiber thermal insulation material and preparation method thereof

Examples

Experimental program
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Effect test

example 1

[0037] Polyurethane with a molecular weight of 200k was dissolved in DMF and HFIP was added, wherein the concentration of polyurethane was 25wt%, the concentration of DMF was 45wt%, and the concentration of additives was 20wt%. The solution was stirred evenly and divided into 2 equal parts.

[0038] A polyurethane solution is mixed with nano-zirconia particles to prepare a polyurethane-zirconia emulsion. The average diameter of the zirconia nanoparticles is 10 nm, and the solid content of the particles in the emulsion is 1 wt%.

[0039]The polyurethane-zirconia emulsion was spun with needle electrospinning equipment to prepare nanofiber waterproof and moisture-permeable porous membrane with far-infrared function. The film thickness is 15μm, the gram weight is 6gsm, and the moisture permeability is 20000g / m 2 / 24h or more, the hydrostatic pressure resistance performance is more than 10m.

[0040] Another part of the polyurethane solution was taken as the shell solution of coa...

example 2

[0047] A high molecular weight polyurethane with a molecular weight of 800k was dissolved in DMF and HFIP was added, wherein the concentration of polyurethane was 8wt%, the concentration of DMF was 88wt%, and the concentration of additives was 4wt%. The solution was stirred evenly and divided into 2 equal parts.

[0048] A polyurethane solution was mixed with nano-zirconia particles to prepare a polyurethane-zirconia emulsion. The average diameter of the zirconia nanoparticles was 300 nm, and the solid content of the particles in the emulsion was 10 wt%.

[0049] The polyurethane-zirconia emulsion was spun with needle electrospinning equipment to prepare nanofiber waterproof and moisture-permeable porous membrane with far-infrared function. The film thickness is 20μm, the gram weight is 15gsm, and the moisture permeability is 10000g / m 2 / 24h or more, the hydrostatic pressure resistance is more than 20m.

[0050] Another part of the polyurethane solution was taken as the shel...

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Abstract

The invention provides the composite fabric which has warm-keeping, far infrared, moisture-permeable and waterproof effects and also has the characteristics of lightness and thinness, and the preparation method of the composite fabric. The light and thin nanofiber warm-keeping and moisture-permeable fabric comprises an outer-layer supporting fabric, a nanofiber far-infrared waterproof and moisture-permeable layer, a nanofiber warm-keeping layer and a heating fabric. The porous reticular fiber structure with far-infrared ceramic particles prepared by an electrostatic spinning process has a far-infrared function, and also has the moisture permeability of 10000-20000 g / m < 2 > / 24h and the hydrostatic pressure resistance of 10-20 m. The polyurethane hollow nanofibers prepared by a coaxial electrostatic spinning process are used as the warm-keeping layer, so that an excellent warm-keeping effect is achieved. The thickness range of the warm-keeping fabric is 2-4.5 mm, and compared with traditional warm-keeping fabric, the warm-keeping fabric is lighter and more widely applicable to the fields of outdoor sports, travel, exploration and the like.

Description

technical field [0001] The patent of the present invention belongs to the technical field of composite fabrics, and particularly relates to nano-composite fabrics and a preparation method thereof. Background technique [0002] Now, tourism, adventure and extreme sports have become an important part of people's lives. Especially in recent years, more and more winter sports have entered the lives of the public. Therefore, in harsh environments such as low temperature, severe cold, wind and rain, and even dark and humid environments, clothing has become an indispensable and important equipment to resist the harsh external environment. Although traditional thermal fabrics can achieve a certain thermal function, the defects such as suffocation, non-waterproof and bulky have become the pain points that affect their use. [0003] Polymer nanomaterials have many excellent properties, such as extremely small fiber diameter, extremely high porosity and extremely large specific surfa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B32B9/02
CPCB32B5/02B32B5/26B32B9/025B32B9/047B32B5/06B32B37/06B32B37/10B32B38/00B32B37/12B32B7/12D04H1/728D04H1/4358D04H1/43914D01F1/106D01F6/94D01F1/08D01F8/16D01F8/18D01F11/08D06M17/00B82Y40/00B82Y30/00B32B2038/008B32B2262/0292B32B2262/0276B32B2264/1024B32B2307/718B32B2307/724B32B2437/00
Inventor 蔡云屾董祥
Owner 昆承新材料科技江苏有限公司
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