A kind of high thermal insulation clothing material and preparation method thereof

A technology for clothing and reinforcing materials, applied in clothing, chemical instruments and methods, clothing, etc., can solve the problems of insignificant improvement in performance of silicon aerogel, single function of reinforcing fibers, insufficient softness, etc., so as to avoid fragmentation and particle shedding. phenomenon, the effect of improving thermal insulation performance and comfort, increasing flexibility and stability

Active Publication Date: 2021-07-02
HAIYAN SHUOCHUANG CLOTHING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its low strength, high brittleness, lack of softness, and the phenomenon that the particles are easy to fall off, the silica airgel in the prior art is subject to many restrictions when used.
In order to improve this defect, the method of adding reinforcing fibers is usually used to make up for it. However, the general reinforcing fibers have a single function, and the effect gap between similar reinforcing fibers is not large, and the performance improvement of silica airgel is not obvious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of high thermal insulation clothing material,

[0031] 1) Reinforcing material preparation: Take amorphous nano-silica aqueous solution with a particle size of 1-300nm, redox graphene aqueous solution and aramid pulp at a mass ratio of 1:3:3.5, add 0.35% CTAB, and stir thoroughly Mix evenly to obtain reinforcement materials;

[0032] 2) Take water glass or alkoxysilane, add 2.5 times of absolute ethanol, stir to form an alcohol sol, add 10% reinforcing material to strengthen the silica skeleton, and prepare a modified alcohol sol;

[0033] 3) Add the modified alcohol sol into a container containing n-hexane for solvent replacement. The replacement time is 6 hours. Repeat the replacement 4 times until it is completely replaced. Then introduce the modified alcohol sol into the radio frequency aging equipment for radio frequency Aging to prepare modified airgel;

[0034] 4) Put the quartz fiber into the mold, introduce the modified airgel, dry at nor...

Embodiment 2

[0038] A preparation method of high thermal insulation clothing material,

[0039] 1) Reinforcing material preparation: Take amorphous nano-silica aqueous solution, redox graphene aqueous solution and aramid pulp with a particle size of 1-300nm and weigh them at a mass ratio of 1: 3.5: 3, add 0.35% CTAB, and stir well Mix evenly to obtain reinforcement materials;

[0040] 2) Take water glass or alkoxysilane, add 2 times of absolute ethanol, stir to form an alcohol sol, add 10% reinforcing material to strengthen the silica skeleton, and prepare a modified alcohol sol;

[0041] 3) Add the modified alcohol sol into a container containing n-hexane for solvent replacement. The replacement time is 4 hours. Repeat the replacement twice until it is completely replaced. Then introduce the modified alcohol sol into the radio frequency aging equipment for radio frequency Aging to prepare modified airgel;

[0042] 4) Put the quartz fiber into the mold, introduce the modified airgel, dry a...

Embodiment 3

[0046] Thermal conductivity measurement: The measurement results are shown in Table 1.

[0047] Sample preparation: use a blade with a blade angle of about 20-25 degrees to process the airgel composite block into 300×300×100mm 3 size, as a sample for measurement. In order to ensure the parallelism of the surfaces, the measurement sample was reshaped with sandpaper of #1500 or more as necessary. The test samples were dried at 100°C for 30 minutes, cooled to room temperature naturally, and set aside.

[0048] Test method: The test conditions are set at atmospheric pressure and an average temperature of 25°C. The measurement sample obtained as described above was sandwiched between the upper heater and the lower heater with a load of 0.3 MPa, and the temperature difference ΔT was 20°C. Measure the upper surface temperature, lower surface temperature, etc., and obtain the thermal resistance R of the measured sample by the following formula S .

[0049] R S =N((T U -T L ) / Q...

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Abstract

The invention discloses a high thermal insulation clothing material and a preparation method thereof. The high thermal insulation clothing material comprises an inner layer, a surface layer and an interlayer; the interlayer is sequentially composed of polyimide fiber fabric and composite airgel material from outside to inside. , camel hair fiber fabrics, composite airgel materials include quartz fibers and modified aerogels, modified aerogels are made of nano-silica, graphene and aramid pulp formed by reinforcing materials and alcohol sol gelation . Beneficial effects are: the present invention uses graphene, aramid pulp, and nano-silicon dioxide free particles as the supporting framework and reinforcing materials to match with the nano-network structure of the airgel, so as to improve the thermal insulation performance and compression resistance of the airgel. Strength, flexibility, elasticity and stability; compounded with polyimide fiber fabric and camel hair fabric with thermal insulation function, it can effectively avoid the phenomenon of composite airgel breaking and particle shedding, and further improve the thermal insulation performance of the insulation layer and comfort.

Description

technical field [0001] The invention relates to the field of preparation and application of clothing materials, in particular to a high heat-retaining clothing material and a preparation method thereof. Background technique [0002] Low-temperature operation requires staff to work in an environment below zero or even tens of degrees below zero for a long time, and ordinary fabrics cannot meet people's resistance to cold. In this regard, some people choose extremely thick cotton wool clothing, but it has the disadvantages of being bloated, inconvenient, and poor in flexibility; some people choose metal wool as a thermal insulation material, but its moisture permeability, moisture conductivity and softness are poor; Synthetic thin-film thermal materials are used to make thermal clothing, but they have disadvantages such as airtightness, impermeability, poor perforation effect, and poor skin feel. [0003] Airgel is a product obtained by drying the solvent in the gel while mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/02B32B9/04B32B27/02B32B27/28B32B27/12B32B7/12
CPCB32B5/02B32B5/26B32B7/12B32B2262/02B32B2262/08B32B2437/00
Inventor 王硕
Owner HAIYAN SHUOCHUANG CLOTHING RES INST
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