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Silicon dioxide aerogel compound fabric, preparation method and military tent cloth

A technology of silica and composite fabrics, applied in textiles and papermaking, fiber types, fiber treatment, etc., can solve the problems of inconvenient use and increased tent weight, and achieve the effects of non-combustibility, good explosion-proof performance, and good thermal insulation performance

Active Publication Date: 2013-11-20
陕西盟创纳米新型材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of silica airgel composite fabric, preparation method and military tent cloth, to overcome the military tent in the prior art, increase the weight of tent itself while ensuring thermal insulation performance and protection performance, and then Problems that lead to inconvenient use in military use

Method used

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  • Silicon dioxide aerogel compound fabric, preparation method and military tent cloth
  • Silicon dioxide aerogel compound fabric, preparation method and military tent cloth

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preparation example Construction

[0031] Such as figure 1 Shown, the silica airgel composite fabric preparation method provided by the invention comprises the following steps:

[0032] S1: Mix ethanol, tetraethyl orthosilicate, deionized water, ammonia water and polydimethylcyclosiloxane, and stir evenly to form a silica sol;

[0033] S2: Immerse a cloth made of high-strength synthetic fibers into the silica sol described in step S1; the high-strength synthetic fibers here can be one of aramid fibers, carbon fibers, and high-strength polyethylene fibers.

[0034] S3: After the cloth surface is completely impregnated, seal the cloth made of high-strength synthetic fibers impregnated with silica sol, and perform gel aging to obtain a silica gel molded body;

[0035] S4: Place the silica gel shaped body described in step S3 in a drying device for supercritical drying to obtain a silica airgel composite fabric.

Embodiment 1

[0038] First, 100 parts of ethanol with a concentration of 95%, 20 parts of ethyl orthosilicate (28% silicon dioxide content), 5 parts of deionized water, 3 parts of ammonia water (the content of ammonia gas is 30%), and 9 parts of polymer Dimethylcyclosiloxane (DMC) is mixed and stirred evenly to form a silica sol. Then immerse the cloth made of aramid fiber into the pre-prepared silica sol. After the cloth surface is completely soaked, it is sealed and subjected to gel aging to obtain a silica gel molded body. The aging time is 5 hours. Finally, the silica gel shaped body was placed in a drying kettle, and compressed carbon dioxide was introduced, and the temperature was adjusted to 55° C., and the pressure was adjusted to 22 MPa before drying. After the equipment drops to normal pressure, open the kettle and take out the product, and measure its relevant data: density 150kg / m 3 , Thermal conductivity at room temperature is 0.012w / (m.k). From the above data analysis, the s...

Embodiment 2

[0040] First, 100 parts of ethanol with a concentration of 99%, 10 parts of tetraethyl orthosilicate (silica content 28%), 5 parts of deionized water, 3 parts of ammonia water (the content of ammonia gas is 25%), and 3 parts of polymer Dimethylcyclosiloxane (DMC) is mixed and stirred evenly to form a silica sol. Then immerse the cloth made of carbon fiber into the pre-prepared silica sol. After the cloth surface is completely soaked, it is sealed and subjected to gel aging to obtain a silica gel molded body. The aging time is 2 hours. Finally, the silica gel shaped body was placed in a drying kettle, and compressed carbon dioxide was passed through, and the temperature was adjusted to 75° C., and the pressure was adjusted to 35 MPa, and then dried. After the equipment drops to normal temperature and pressure, open the kettle and take out the product, and measure its relevant data: the density is 120kg / m 3 , The thermal conductivity at room temperature is 0.010w / (m.k). Accord...

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Abstract

The invention relates to the field of silicon dioxide aerogel, and particularly discloses a silicon dioxide aerogel compound fabric, a preparation method and a military tent cloth. The preparation of the silicon dioxide aerogel compound fabric comprises the following steps of: soaking a cloth made from high-strength synthetic fibers into a silicon dioxide sol; after the surface of the cloth is completely soaked, sealing the cloth soaked with the silicon dioxide sol and made of the high-strength synthetic fibers, and aging by a gel; finally supercritically drying. The military tent cloth comprises an outer layer, an interlayer and an inner layer, wherein the outer layer is a camouflage cloth coated with vinyl polyester fibers; the interlayer is a silicon dioxide aerogel compound fabric part; the inner layer is a military dacron cloth. The silicon dioxide aerogel compound fabric provided by the invention has the advantages of light weight, good heat-insulating property and extremely high absorption property on high-strength impact force and has the characteristics of good heat-insulating property, light weight and anti-explosion property.

Description

technical field [0001] The invention relates to the field of silica airgel, in particular to a silica airgel composite fabric, a preparation method and military tent fabric. Background technique [0002] Military tents refer to tents used by the army and used for military purposes. For example, it is used for field office, accommodation, and storage of materials and equipment during training and war. Sometimes tents made of special materials are also directly used to store and cover weapons. Therefore, the concealment and protection of military tents are very important. [0003] At present, the existing military tents mainly use polyester waterproof and breathable canvas materials specially made by military factories, and the outer layer is coated with camouflage patterns and anti-infrared cloth, which has good concealment and certain protection. For its warmth retention, it is mostly realized by adding a layer of needle-punched felt in the middle of the tent cloth, but th...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M101/36D06M101/40D06M101/20
Inventor 陈国陈均志张君
Owner 陕西盟创纳米新型材料有限责任公司
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