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Method for preparing fiber modified aerogel material

A technology of fiber modification and airgel, which is applied in the field of preparation of fiber modified airgel materials, can solve the problems of poor mechanical properties and medium and high temperature heat insulation performance, limit the development of airgel and energy-saving applications, and achieve improvement The effect of connection performance, avoiding sudden breakage, and good mechanical properties

Active Publication Date: 2018-08-14
深圳市国日宏电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But due to SiO 2 Airgel has extremely large porosity (up to 99%) and infrared transmittance (3 ~ 5 μm), which makes its mechanical properties and medium and high temperature thermal insulation performance poor, which greatly limits the SiO 2 Development and energy-saving application of airgel in various fields

Method used

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  • Method for preparing fiber modified aerogel material

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Effect test

Embodiment 1

[0028] A kind of preparation method of fiber modified airgel material, composition is calculated by weight, comprises the following steps:

[0029] (1) Configure 50 parts of dopamine hydrochloric acid solution and adjust the pH value to 9;

[0030] (2) add 5 parts of jute fiber mats, 1 part of alumina fiber and 2 parts of sepiolite fiber, feed nitrogen and make nitrogen in the solution reach saturation, seal;

[0031] (3) placed in a 2.5MeV, 40mA electron accelerator for irradiation stirring treatment, the irradiation dose rate is 100kGy / h, the irradiation dose is 500kGy, and the stirring speed is 100rpm;

[0032] (4) After taking it out, wash it with deionized water, and dry it at 30°C to obtain the treated mixed fiber;

[0033] (5) Get zirconium oxychloride octahydrate, titanium tetrachloride and deionized water to mix, stir and dissolve to obtain solution A, wherein, the volume ratio of zirconium oxychloride octahydrate, titanium tetrachloride and deionized water is 1:1: ...

Embodiment 2

[0043] A kind of preparation method of fiber modified airgel material, composition is calculated by weight, comprises the following steps:

[0044] (1) Configure 60 parts of dopamine hydrochloric acid solution and adjust the pH value to 9;

[0045] (2) Add 5-10 parts of jute fiber mats, 1-3 parts of alumina fibers and 2-5 parts of sepiolite fibers, feed nitrogen to make the solution saturated with nitrogen, and seal;

[0046] (3) placed in an electron accelerator of 2.5 MeV and 40 mA for irradiation stirring treatment, the irradiation dose rate is 100-200 kGy / h, the irradiation dose is 500-1000 kGy, and the stirring speed is 100-200 rpm;

[0047] (4) After taking it out, wash it with deionized water, and dry it at 35°C to obtain the treated mixed fiber;

[0048] (5) Get zirconium oxychloride octahydrate, titanium tetrachloride and deionized water to mix, stir and dissolve to obtain solution A, wherein, the volume ratio of zirconium oxychloride octahydrate, titanium tetrachlor...

Embodiment 3

[0058] A kind of preparation method of fiber modified airgel material, composition is calculated by weight, comprises the following steps:

[0059] (1) Configure 70 parts of dopamine hydrochloric acid solution and adjust the pH value to 10;

[0060] (2) Add 5-10 parts of jute fiber mats, 1-3 parts of alumina fibers and 2-5 parts of sepiolite fibers, feed nitrogen to make the solution saturated with nitrogen, and seal;

[0061](3) placed in an electron accelerator of 2.5 MeV and 40 mA for irradiation stirring treatment, the irradiation dose rate is 100-200 kGy / h, the irradiation dose is 500-1000 kGy, and the stirring speed is 100-200 rpm;

[0062] (4) After taking it out, wash it with deionized water, and dry it at 35°C to obtain the treated mixed fiber;

[0063] (5) Get zirconium oxychloride octahydrate, titanium tetrachloride and deionized water to mix, stir and dissolve to obtain solution A, wherein, the volume ratio of zirconium oxychloride octahydrate, titanium tetrachlor...

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Abstract

The invention provides a method for preparing a fiber modified aerogel material. The method comprises the following steps: preparing a dopamine hydrochloric acid solution to adjust the pH value; adding jute fiber felt, an alumina fiber and a sepiolite fiber, and introducing nitrogen gas so that the nitrogen gas in the solution is saturated, and sealing; performing irradiation and stirring treatment; cleaning, and drying to obtaining a mixed fiber; taking zirnocyl chloride octahydrate, titanium tetrachloride and deionized water to be mixed and stirred to obtain a solution A; taking ethyl orthosilicate and ethanol to be mixed and stirred to obtain a solution B; mixing and stirring the solution A and the solution B; placing in an ice water bath, adding propylene epoxide and stirring; adding the mixed fiber and a polydopamine nanofiber to be stirred, pouring into a mold, sealing and aging; taking out, soaking in acetone; taking the mixture out of acetone and drying to obtain the fiber modified aerogel material. The material prepared by the method has the advantages of very good heat insulation effect, very good mechanical properties, good bending strength, good flexibility and high compressive strength, and well avoids sudden breakage of the material.

Description

technical field [0001] The invention relates to a preparation method of fiber modified airgel material. Background technique [0002] SiO 2 Airgel is a new type of nanoporous multifunctional solid material with the lowest density and the best thermal insulation performance. It has broad development and application prospects in the fields of physical chemistry, heat, optics and electricity. But due to SiO 2 Airgel has extremely large porosity (up to 99%) and infrared transmittance (3 ~ 5 μm), which makes its mechanical properties and medium and high temperature thermal insulation performance poor, which greatly limits the SiO 2 The development and energy-saving application of airgel in various fields. Therefore improving the SiO 2 Airgel mechanics and medium and high temperature thermal insulation properties have become research hotspots at home and abroad, and the use of fiber composite reinforcement is to improve SiO 2 The most effective way to improve the mechanical p...

Claims

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Application Information

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IPC IPC(8): C04B30/02
CPCC04B30/02C04B2201/32C04B2201/50C04B18/248C04B14/4625C04B14/4643C04B22/12C04B24/42C04B24/026C04B24/121C04B16/06
Inventor 何敬堂庞婉青
Owner 深圳市国日宏电子科技有限公司
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