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Aerogel based high-heat retention textile composite and preparation method thereof

An airgel thermal insulation layer and composite material technology, applied in the field of textile materials, can solve the problems of large thermal radiation heat loss, airgel powder loss, three-dimensional space structure damage, etc., to achieve good warmth retention, washability, The effect of improving usability

Inactive Publication Date: 2019-08-02
上海驰纺材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a high heat-retaining textile composite material based on airgel and its preparation method, which solves the problem of powder falling when airgel is used as a heat-retaining material, and avoids the problem of airgel being lost during the application process. Re-drying destroys its three-dimensional space structure, protecting its thermal conductivity from being destroyed, and improving the defect of aerogel as a thermal insulation material due to the large thermal radiation heat loss of the main body, further improving the wearability and warmth retention of the material , which endows the material with the function of self-temperature adjustment and has a good market application prospect

Method used

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  • Aerogel based high-heat retention textile composite and preparation method thereof
  • Aerogel based high-heat retention textile composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] a. Finishing process of waterproof weft-knitted jersey fabric:

[0055] 2% TG-5671, padding liquid rate 60%, setting machine temperature 160 ℃, setting time 60s.

[0056] b. Hydrophobic airgel powder preparation:

[0057] Use methyltrimethoxysilane as the silicon source, mix it with isopropanol at a ratio of 1:4, stir vigorously at 30°C, then add deionized water and oxalic acid or hydrochloric acid as an acid catalyst, and stir for 1.5h to make The silicon source is fully hydrolyzed under acidic conditions, and the methoxyl group is hydrolyzed into hydroxyl groups. The above reaction process is maintained in a water bath at 30°C; then ammonia water is added dropwise to adjust the pH of the system to 8, and stirred for 10 minutes, and then the temperature of the water bath is adjusted to 40°C. Insulation for 3 hours, under the action of alkali catalysis, condensation reactions will occur between the hydroxyl groups produced by the hydrolysis of the silicon source and th...

Embodiment 2

[0067] a. Outer waterproof fabric finishing process:

[0068] 1% TG-5671, padding liquid rate 60%, setting machine temperature 150 ℃, setting time 60s.

[0069] b. Hydrophobic airgel powder preparation:

[0070] The preparation and grinding process of the airgel are the same as in Example 1, and the parameters are slightly changed, mainly including the molar ratio of silicon source to isopropanol 1:2, after the system conditions, the gel is incubated at 40°C for 4h, and the aging at 60°C for 36h, The drying time of each stage under normal pressure is 1h.

[0071] c. Phase change material microcapsule preparation:

[0072] The preparation of the microcapsules is the same as in Example 1, and the process parameters are slightly changed mainly including: the core material is selected from n-octadecane, the mass ratio of the core material to the capsule wall is 1:3, and the emulsifier selected when the core material is emulsified is polyvinylpyrrolidone , the dosage is 1.5%, an...

Embodiment 3

[0080] a. Outer waterproof fabric finishing process:

[0081] 1% TG-5671, padding liquid rate 60%, setting machine temperature 150 ℃, setting time 60s.

[0082] b. Hydrophobic airgel powder preparation:

[0083] The preparation and grinding process of the airgel are the same as in Example 1. The parameters are slightly changed, mainly including the molar ratio of silicon source to isopropanol 1:3, after the system conditions, the gel is incubated at 40°C for 3h, and the aging at 60°C for 48h, The drying time at each level of temperature under normal pressure is 2h.

[0084] c. Phase change material microcapsule preparation:

[0085] The preparation of the microcapsules is the same as in Example 1, and the process parameters are slightly changed mainly including: the core material is selected from the compound of n-17 and n-eicosane at 1:1, the mass ratio of the core material to the capsule wall is 1:2, and the core material is emulsified The selected emulsifier is the compo...

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Abstract

The invention relates to an aerogel based high-heat retention textile composite and a preparation method of the aerogel based high-heat retention textile composite, and the aerogel based high-heat retention textile composite sequentially comprises a waterproof and moisture permeable layer, an aerogel heat insulation layer, a far infrared light shielding layer, a phase change energy storage layer and a waterproof and moisture permeable layer from outside to inside. The aerogel based high-heat retention textile composite solves the problem that a powder of an aerogel falls off when the aerogel is used as a heat insulation material, the aerogel is prevented from being dried again in the application process of the aerogel to break the three-dimensional space structure, the advantage of the heat conductivity coefficient is protected against damages, the defect of high loss of the thermal radiation heat of the aerogel, as a main body of the heat insulation material, is improved, the serviceability and the heat retention of the material are further improved, the material achieves the self-temperature regulation function, and the aerogel based high-heat retention textile composite has an excellent market application prospect.

Description

technical field [0001] The invention belongs to the field of textile materials, and in particular relates to an airgel-based high heat-retaining textile composite material and a preparation method thereof. Background technique [0002] Airgel is a nanoporous amorphous material with a continuous three-dimensional network structure. It is the lightest solid in the world and is known as "solid smog". It has a low density (0.003-0.3g / cm 3 ), high porosity (80%-99.8%), large specific surface area (100-1600m 2 / g) and low thermal conductivity (10-40mW / (m K)), etc., are expected to be: "magical materials that change the world", in aerospace, petrochemical, environmental treatment, energy storage and conversion, building insulation It has potential application value in many fields. [0003] Among the chemical preparation methods of airgel, the sol-gel method is the most commonly used at home and abroad at present. The preparation of silica airgel mainly involves the following thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/12B32B27/36B32B27/40B32B27/32B32B27/34B32B23/10B32B7/12B32B33/00C01B33/158B82Y30/00B82Y40/00
CPCB32B5/02B32B7/12B32B27/12B32B27/20B32B27/322B32B27/40B32B37/06B32B37/10B32B2262/0261B32B2262/0276B32B2262/04B32B2262/062B32B2307/304B32B2307/724B32B2307/73B32B2437/00B82Y30/00B82Y40/00C01B33/1585C01P2004/60C01P2004/61C01P2004/62C01P2004/64
Inventor 靳晓松王先锋杜博超纪新颖杨兴友周盼红李晓宇
Owner 上海驰纺材料科技有限公司
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