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Aerogel composite fiber material as well as preparation method and application thereof

A technology of composite fiber and airgel, which is applied in the field of composite fiber materials, can solve the problems of reducing the thermal insulation performance of composite materials, and achieve the effect of maintaining thermal insulation performance and high stability

Inactive Publication Date: 2021-06-18
纳诚(邢台)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes making fibre materials with improved properties through adding small solid or liquid substances into the matrix made from rubbers like polyurethane (PU) elastomer). These tiny objects help keep the bubbles inside but still allow it to stay suspended even when spun at very low speeds. By doing this they make better composites than traditional methods without sacrificing their quality. Additionally, these new techniques have potential applications beyond military purposes where fire-retarding qualities may benefit.

Problems solved by technology

Technological Problem: Current methods have limited successes when enhancing the strength and stiffness of an organic polymer (such as epoxy) based gel product while maintaining good sound transmission characteristics such as reduced weight and improved durability over time. Additionally, existing techniques like adding fillings may reduce their effectiveness because they break down the matrix itself during manufacturing processes leading to increased defect counts.

Method used

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  • Aerogel composite fiber material as well as preparation method and application thereof
  • Aerogel composite fiber material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a kind of preparation method of airgel composite fiber material, it comprises the following steps:

[0033] S1. Add CTAB surfactant to 5000 mL of deionized water, the concentration of which is controlled to 1% as required, and slightly heated to dissolve to form an aqueous solution.

[0034] S2. Add 500 mL of silica airgel particles with an average particle size of 15 μm to the above aqueous solution gradually and slowly under high-speed shearing conditions, and continue stirring until an airgel dispersion is formed.

[0035] S3. Pour the airgel dispersion above into a ball mill, and add ceramic beads of different sizes to 2 / 3 of the volume of the dispersion to perform high-speed ball milling for 72 hours to obtain a slurry.

[0036] S4. After filtering the slurry, calculate the solid content of the slurry.

[0037] S5. Dissolving an appropriate amount of PVA in hot water at 95°C to prepare a polymer solution with a mass fraction of 16%, formin...

Embodiment 2

[0041] This embodiment provides a kind of preparation method of airgel composite fiber material, it comprises the following steps:

[0042] S1. Disperse 50 grams of silica airgel particle micropowder with an average particle diameter of 15 μm in tetrahydrofuran under high shear to form a tetrahydrofuran airgel dispersion.

[0043] S2. Pour the above-mentioned airgel dispersion into a ball mill, and add two-thirds of the volume of the dispersion into ceramic beads of different sizes for high-speed ball milling, and ball mill for 24 hours to obtain a slurry. During the ball milling process, keep the low temperature, and the temperature should not exceed 30 °C to obtain a slurry.

[0044] S3. After filtering the slurry, calculate the solid content of the slurry.

[0045] S4. Dissolving an appropriate amount of polystyrene in tetrahydrofuran at 50° C. to prepare a polymer solution with a mass fraction of 6%.

[0046] S5. After mixing the dispersed slurry with the polymer solutio...

Embodiment 3

[0050] This embodiment provides a kind of preparation method of airgel composite fiber material, it comprises the following steps:

[0051] S1. Add surfactant CTAB into 5000mL of deionized water, slightly heat and dissolve to form an aqueous solution, and control the concentration of CTAB to 1%.

[0052] S2. Add 500 mL of airgel particles with an average particle size of 15 μm to the above aqueous solution gradually and slowly under high-speed shearing conditions, and keep stirring until an airgel dispersion is formed.

[0053] S3. Pour the airgel dispersion above into a ball mill, and add ceramic beads of different sizes to 2 / 3 of the volume of the dispersion to perform high-speed ball milling for 24 hours to obtain a slurry.

[0054] S4. After filtering the slurry, calculate the solid content of the slurry.

[0055] S5. Dissolving an appropriate amount of PVA in hot water at 95° C. to prepare a polymer solution with a mass fraction of 10%.

[0056] S6. After mixing the dis...

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Abstract

The invention is suitable for the technical field of composite fiber materials, and provides an aerogel composite fiber material as well as a preparation method and application thereof. The preparation method of the aerogel composite fiber material comprises the following steps: dispersing aerogel particles in a good polymer solvent to obtain aerogel dispersion liquid; dissolving a polymer raw material in the good polymer solvent to obtain a polymer solution; mixing the polymer solution with the aerogel dispersion liquid to obtain a composite dispersion liquid; and performing spinning treatment on the composite dispersion liquid to obtain the aerogel composite fiber material. According to the embodiment of the invention, the aerogel composite fiber material capable of completely maintaining the aerogel microscopic skeleton completely maintains the thermal insulation performance of aerogel, has certain flame-retardant characteristic and carbon dioxide adsorption effect, and can be applied to military, industrial and civil fields such as high-performance fabrics, flame-retardant products and the like.

Description

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Claims

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Application Information

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Owner 纳诚(邢台)新材料科技有限公司
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