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A Simple Method for Preparing Magnesium-Al-Spinel Fiber Cloth Using Cotton Cloth as Template

A technology of magnesia-aluminum spinel and fiber cloth is applied in the field of preparing magnesia-aluminum spinel (MgAl2O4) fiber cloth, which can solve the problems of high cost, waste of resources, increase and the like, and achieve huge economic and social benefits and total cost. Low, simple process effect

Inactive Publication Date: 2016-06-01
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the melting point of magnesia-alumina spinel is higher than 2100°C, if the traditional melting method is used to prepare high-purity magnesia-alumina spinel (content higher than 95%) fiber cloth, it has the disadvantages of high energy consumption, complicated equipment, and high cost. , which greatly limits the application of high-purity magnesium-aluminum spinel fiber cloth in high-temperature refractory insulation materials, catalyst carriers, film supports, etc.
In addition, the process and equipment of preparing magnesium aluminum spinel fiber by wet chemical method (mainly sol-gel method) at home and abroad are complex and costly; if it is woven into cloth, the cost of magnesium aluminum spinel fiber cloth will be further increased , which seriously hinders the application and promotion of magnesium aluminum spinel fiber cloth
[0003] On the other hand, with the development of my country's economy and the increase of population, the consumption of textiles has increased rapidly, and a large number of waste textiles have been buried and incinerated as garbage, which has not only caused a waste of resources, but also caused environmental pollution.

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve aluminum chloride, magnesium nitrate, urea and polyvinyl alcohol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Mg 2+ The concentrations of urea and urea are 0.5mol / L, 0.25mol / L and 1mol / L, respectively. Among them, the amount of polyvinyl alcohol added is 1% of the mass of urea. Put a new cotton-containing fabric (cotton content 80wt%, polyester 15wt%, spandex 5wt%) into the solution and soak for 10 minutes, take it out and wring out excess water. After drying at 50°C for 20 hours, put the soaked and dried cloth in a tunnel kiln, heat it up to 400°C at a speed of 20°C / min, and then heat up to 1200°C at a speed of 0.1°C / min And keep it warm for 1 hour for sintering; after cooling, the magnesium aluminum spinel fiber cloth can be prepared.

Embodiment 2

[0020] Dissolve aluminum nitrate, magnesium chloride, urea and polyethylene glycol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Mg 2+ and urea concentrations are 1mol / L, 0.5mol / L and 2.5mol / L, respectively. Wherein, the addition amount of polyethylene glycol is 2% of urea quality. Put a new cotton-containing fabric (cotton content 85wt%, polyester 5wt%, spandex 10wt%) into the solution and soak for 10 minutes, take it out and wring out excess water. After drying at 50°C for 20 hours, put the soaked and dried cloth in a tunnel kiln, heat it up to 600°C at a speed of 30°C / min, and then heat up to 1500°C at a speed of 1°C / min And keep warm for 0.5 hours and sinter; after cooling, the magnesium aluminum spinel fiber cloth can be prepared.

Embodiment 3

[0022] Dissolve aluminum sulfate, magnesium nitrate, urea and polypropylene glycol (auxiliary) in distilled water to prepare a solution to control Al 3+ , Mg 2+ and urea concentrations are 1.5mol / L, 0.75mol / L and 3.0mol / L, respectively. Wherein, the addition amount of polypropylene glycol is 3% of urea quality. Put the recycled cotton-containing fabric (90wt% cotton, 5wt% polyester, and 5wt% spandex) into the solution and soak for 10 minutes, then take it out and wring out excess water. After drying at 50°C for 20 hours, put the soaked and dried cloth in a tunnel kiln, heat it up to 800°C at a speed of 40°C / min, and then heat up to 1600°C at a speed of 0.7°C / min And keep warm for 0.5 hours and sinter; after cooling, the magnesium aluminum spinel fiber cloth can be prepared.

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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Abstract

The invention provides a simple method for preparing a magnesium aluminate spinel fiber cloth with a cotton-containing cloth as a template. The simple method comprises the following steps: (1) dissolving an aluminum salt, a magnesium salt, urea and auxiliaries into distilled water to prepare a solution; soaking the cotton-containing cloth into the solution for 10 minutes, then taking out the cotton-containing cloth, twisting the cotton-containing cloth to remove redundant moisture content, and drying at 50 DEG C for 20 hours; (2) putting the soaked and dried cloth into a tunnel kiln, quickly heating to the range of 400-800 DEG C, and then slowly heating to the range of 1200-1600 DEG C and preserving heat for 0.5-1 hour for sintering, thereby obtaining the magnesium aluminate spinel fiber cloth. The simple method for preparing the magnesium aluminate spinel fiber cloth with the cotton-containing cloth as the template has the advantages of simple equipment, low energy consumption, easiness for operations and the like, and is convenient for realization of industrial large-scale production.

Description

technical field [0001] The invention provides a method for preparing magnesium-aluminum spinel (MgAl) with cotton-containing cloth as a template. 2 o 4 ) The simple method of fiber cloth belongs to the technical field of ceramic fiber material preparation. Background technique [0002] Magnesium-aluminum spinel fiber cloth has the advantages of high temperature resistance, corrosion resistance, high strength, high porosity, large specific surface area, heat insulation, etc., and can be used as high-temperature refractory insulation materials, catalyst carriers, adsorbents for toxic substances, and film supports And chemical fillers, etc. The preparation method of the traditional fiber cloth is to heat the original ingredients to a high temperature and melt them, and prepare fibers by spinning, drawing and other processes, and then use spinning or weaving techniques to make fiber cloth. Since the melting point of magnesia-alumina spinel is higher than 2100°C, if the tradit...

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 Patents(China)
IPC IPC(8): C04B35/443C04B35/622
Inventor 白佳海唐钰栋唐竹兴
Owner SHANDONG UNIV OF TECH