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A kind of high temperature resistant nano light ceramic material and preparation method thereof

A light-weight ceramic and high-temperature-resistant technology, applied in the field of thermal insulation, can solve the problems of high density, low thermal conductivity, and high thermal conductivity of high-temperature thermal insulation materials, and achieve the effect of low density, low thermal conductivity, and high-efficiency thermal insulation

Active Publication Date: 2021-12-21
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current thermal insulation materials have the problems of large thermal conductivity and high density of high-temperature thermal insulation materials (see Table 1 for the performance parameter table of existing thermal insulation materials). With the development trend of lightweight thermal equipment, a lightweight, low thermal conductivity, durable High-temperature insulation materials upgrade existing insulation products for traditional thermal equipment

Method used

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  • A kind of high temperature resistant nano light ceramic material and preparation method thereof
  • A kind of high temperature resistant nano light ceramic material and preparation method thereof
  • A kind of high temperature resistant nano light ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] High temperature resistant nano light ceramic material, the unit is mass percentage.

[0037] Main material system:

[0038]

[0039] Admixture (0.901% of the main material system):

[0040] Cetyltrimethylammonium bromide 0.001%

[0041] Methylcellulose 0.2%;

[0042] Ammonia 0.7%

[0043] The preparation process of the high temperature resistant nano light ceramic material in this embodiment is as follows:

[0044] S1. Dissolve cetyltrimethylammonium bromide and methyl cellulose in water, place in a fiber disperser and add silica sol to stir, set the speed at 600 rpm, and stir for 3 minutes to obtain nano-scale bubble solution to stabilize the bubbles;

[0045] S2. Add rho-alumina powder to the solution in step S1, keep the rotating speed at 600 rpm, stir for 1 min, and the solution becomes a suspension of bubbles wrapped in white ceramic powder.

[0046]Continue to add fibers, increase the speed of the fiber disperser to 800 rpm, and stir for 8 minutes to obt...

Embodiment 2

[0054] High temperature resistant nano light ceramic material, the unit is mass percentage.

[0055] Main material system:

[0056]

[0057] Admixture (0.802% of the main material system):

[0058]

[0059]

[0060] The preparation process of the high temperature resistant nano light ceramic material in this embodiment is as follows:

[0061] S1. Dissolve sodium dodecylbenzenesulfonate, sulfurous acid pulp waste liquid and gum arabic in water, place in a fiber disperser and add silica sol to stir, set the speed at 700 rpm, and stir for 4 minutes to obtain a nanometer bubble solution with stable bubbles;

[0062] S2. Add aluminum nitrate nonahydrate to the solution in step S1, keep the speed at 600 rpm, stir for 1 min, and the solution becomes a viscous suspension of bubbles.

[0063] Continue to add fibers, increase the speed of the fiber disperser to 1000 rpm, and stir for 8 minutes to obtain a high-viscosity suspension solution in which the chopped fibers are eve...

Embodiment 3

[0071] High temperature resistant nano light ceramic material, the unit is mass percentage.

[0072] Main material system:

[0073]

[0074] Admixture (0.752% of the main material system):

[0075]

[0076] The preparation process of the high temperature resistant nano light ceramic material in this embodiment is as follows:

[0077] S1. Dissolve sodium dodecylbenzenesulfonate, sulfurous acid pulp waste liquid and gum arabic in water, place in a fiber disperser and add silica sol to stir, set the speed at 700 rpm, and stir for 4 minutes to obtain a nanometer bubble solution with stable bubbles;

[0078] S2. Add aluminum chloride and aluminum sulfate to the solution in step S1, keep the rotational speed at 600 rpm, stir for 1 min, and the solution becomes a viscous suspension of bubbles.

[0079] Continue to add fibers, increase the speed of the fiber disperser to 1000 rpm, and stir for 8 minutes to obtain a high-viscosity suspension solution in which the chopped fiber...

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Abstract

The invention relates to a high-temperature-resistant lightweight nano-ceramic material and a preparation method thereof. Due to the high-temperature-resistant lightweight nano-ceramic has a large number of nano-pore structures, it ensures that the insulation material is lightweight and low-density, and the volume density can reach 0.1-0.4 g / cm 3 , and has the characteristics of low thermal conductivity, the thermal conductivity (1100°C) can reach 0.07‑0.11 w / m·K, which achieves more efficient heat preservation and effectively reduces heat loss. At low temperature, it has a low thermal conductivity equivalent to that of airgel, the known lowest thermal conductivity material, and the preparation process is simpler and much cheaper than airgel materials, and it is easier to market; , the low thermal conductivity of the insulation material in the example of the present invention has an absolute advantage, and the airgel material cannot meet the long-term use above 1000°C, but the product involved in the present invention can withstand a maximum temperature of 1700°C, which has obvious advantages in high temperature resistance.

Description

technical field [0001] The invention belongs to the field of heat insulation and heat preservation, and in particular relates to a high-temperature-resistant nano light-weight ceramic material for high-temperature heat consumption equipment and a preparation method thereof. Background technique [0002] High-temperature-resistant insulation materials are a very effective technical way to achieve energy saving and consumption reduction in thermal equipment and improve production efficiency. The problem of thermal insulation upgrade and transformation of existing equipment. The current thermal insulation materials have the problems of large thermal conductivity and high density of high-temperature thermal insulation materials (see Table 1 for the performance parameters of existing thermal insulation materials). With the development trend of lightweight thermal equipment, a light-weight, low thermal conductivity, High-temperature insulation materials upgrade the existing insul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/80C04B35/82C04B38/10
CPCC04B35/82C04B38/106C04B2235/3217C04B2235/443C04B2235/444C04B2235/448C04B2235/3418C04B2235/5232C04B2235/5228C04B2235/5224C04B2235/9607C04B2235/77C04B2235/96C04B2235/9615C04B35/803C04B38/0054C04B38/0067C04B38/0074
Inventor 牟善浩魏美玲王守兴张雍李杨程之强栾强周长灵王重海徐丹丹巩晓霖
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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