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Active carbon fiber composite material and preparation method thereof

A technology of activated carbon fiber and activated carbon fiber cloth, which is applied in the field of activated carbon fiber composite materials and its preparation, can solve the problems of cumbersome multi-functional fabrics, many layers of fabrics, and heavy finished products, and achieve simple and feasible preparation methods, good flexibility, The effect of small weight

Active Publication Date: 2013-10-02
北京蓝星清洗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-functional fabrics prepared by these technical methods have defects such as cumbersome process, many layers of fabrics, heavy finished products, and high cost.

Method used

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  • Active carbon fiber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Mix 156g (0.75mol) ethyl orthosilicate, 204g (4.43mol) absolute ethanol and 40g (2.22mol) deionized water, stir at 25°C for 40min to make it evenly mixed; the mass fraction of 0.1mL is 37% hydrochloric acid (1.20×10 -3 mol) was added to 20g (1.11mol) deionized water, mixed evenly and quickly added dropwise to the above precursor solution, stirred evenly and aged for 6h to obtain SiO 2 Acidic sol; Ammonia water with a mass fraction of 28% was added dropwise to the acidic sol until the pH value was 7.4 to obtain SiO 2 Alkaline sol; the thickness is 0.3mm, the specific surface area is 1500m 2 / g of PAN-based activated carbon fiber plain cloth was immersed in the above-mentioned alkaline sol, stood for 10 h, and dried at 70 ° C for 30 h to obtain a single-layer activated carbon fiber composite fabric. SiO in the composite fabric 2 The content is 16wt%, and the specific surface area of ​​the composite fabric is 1253m 2 / g, the gram weight is 96g / m 2 , The warp breaking ...

Embodiment 2

[0049] Mix 122g (0.80mol) of methyl orthosilicate, 190g (4.13mol) of absolute ethanol and 33g (1.83mol) of deionized water, stir at 30°C for 30min to make it evenly mixed, and the mass fraction of 0.025mL is 98% of sulfuric acid (4.60×10 -4 mol) was added to 16.5g (0.915mol) deionized water, mixed evenly and quickly added dropwise to the above precursor solution, stirred evenly and aged for 6h to obtain SiO 2 Acidic sol; the mass fraction of 30% NaOH solution was added dropwise to the acidic sol until the pH value was 7.8 to obtain SiO 2 Alkaline sol; the thickness is 0.5mm, the specific surface area is 1650m 2 / g of PAN-based activated carbon fiber twill cloth was immersed in the above-mentioned alkaline sol, left to stand for 10 h, and dried at 60 ° C for 30 h to obtain a single-layer activated carbon fiber composite fabric. SiO in the composite fabric 2 The content is 21wt%, and the specific surface area of ​​the composite fabric is 1163m 2 / g. Gram weight is 122g / m 2...

Embodiment 3

[0051] Mix 90g (0.50mol) of methyltriethoxysilane, 210g (6.55mol) of anhydrous methanol and 36g (2.00mol) of deionized water, stir at 30°C for 30min to make it evenly mixed,

[0052] Dissolve 0.18g (0.02mol) of oxalic acid in 18g (1.00mol) of deionized water and quickly add it dropwise to the above precursor solution, stir evenly and age for 10h to obtain SiO 2 Acidic sol; Ammonia water with a mass fraction of 28% was added dropwise to the acidic sol until the pH value was 7.8 to obtain SiO 2 Alkaline sol; the thickness is 0.3mm, the specific surface area is 1500m 2 / g of PAN-based activated carbon fiber plain weave cloth was immersed in the above-mentioned alkaline sol, stood for 10 h, and dried at 60 ° C for 30 h to obtain a single-layer activated carbon fiber composite fabric. SiO in the composite fabric 2 The content is 19wt%, and the specific surface area of ​​the composite fabric is 1012m 2 / g, the gram weight is 105g / m 2 , The warp breaking strength is 241N, and the...

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Abstract

The invention relates to an active carbon fiber composite material and a preparation method of the active carbon fiber composite material. The active carbon fiber composite material is formed by compounding an active carbon fiber layer and a silica gel layer covered outside the active carbon fiber layer, is large in specific surface area, light in gram weight and high in mechanical strength, not only maintains the high absorption property and flame-retardant property of the active carbon fiber, but also has the large specific surface area and very low heat conduction performance of silica aerogel, and has the characteristics of heat insulation, toxin prevention and flame-retardant property. The preparation method of the active carbon fiber composite material comprises the steps of: dipping the active carbon fiber layer into silica sol, then taking out the active carbon fiber layer, and drying to obtain the active carbon fiber composite material. The preparation method has the advantages of being simple and feasible as well as low in cost.

Description

technical field [0001] The invention relates to the technical field of textile fabrics, in particular to an activated carbon fiber composite material and a preparation method thereof. Background technique [0002] At present, the activated carbon powder chemical-resistant fabrics used in my country's chemical protective clothing have defects such as hard hand feeling, poor air permeability, poor inflection, and poor wearability. [0003] Activated carbon fiber is a new type, efficient and ideal multifunctional adsorbent environmental protection material, especially the polyacrylonitrile (PAN) based activated carbon fiber structure contains nitrogen, which can catalyze sulfur and nitrogen compounds, and has high strength and high adsorption Performance, less dust generated during use, not easy to burn, long service life, has special significance in desulfurization, denitrification and many applications that require high strength (such as new lightweight nuclear, biological an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06B3/10C01B33/12D06M101/40
Inventor 孟秀青刘国强高磊杨刚
Owner 北京蓝星清洗有限公司
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