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Preparation method of multilayer aluminium silicate thermal insulation board

A technology of aluminum silicate fiber board and heat insulation board, which is applied in chemical instruments and methods, lamination and layered products, etc., can solve the problems of compressive strength to be improved, poor thermal insulation performance, easy brittle cracking, etc. The effect of high thermal conductivity, strong toughness and high melting point

Inactive Publication Date: 2020-01-14
王郑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem mainly solved by the present invention is that the current inorganic heat-insulating boards are mainly made of materials such as cement foam and magnesia foam. In the high temperature environment, it is easy to be brittle and the compressive strength needs to be improved. A preparation method for a multi-layer aluminum silicate heat insulation board is provided.

Method used

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  • Preparation method of multilayer aluminium silicate thermal insulation board

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Acidic volcanic rocks are: pitch rock

[0038] Preparation of porous aluminum silicate fiberboard:

[0039] In parts by weight, add 70 parts of kaolin, 20 parts of alumina, 10 parts of titanium dioxide, and 20 parts of aluminum phosphate to 400 parts of water, stir and disperse to form a suspension slurry, and add a phosphoric acid solution with a mass fraction of 20% to the suspension slurry Adjust the pH value of the suspended slurry to 5, heat up to 50°C, and keep it warm for 10 hours to obtain mud for later use;

[0040] Grind the bentonite and pass it through a 400-mesh sieve, then calcinate at a high temperature of 540°C for 2 hours to obtain light-burned bentonite, mix 20 parts of diatomite and 10 parts of light-burned bentonite through a 400-mesh sieve to obtain mixed clay, and mix 35 parts of nano Silica airgel, 30 parts of the above mixed clay, and 200 parts of water are mixed to obtain a gel solution;

[0041] Mix the spare mud and the above-mentioned gel s...

Embodiment 2

[0050] Acidic volcanic rocks are: Perlite

[0051] Preparation of porous aluminum silicate fiberboard:

[0052] In parts by weight, add 75 parts of kaolin, 25 parts of alumina, 12 parts of titanium dioxide, and 21 parts of aluminum phosphate to 450 parts of water, stir and disperse to form a suspension slurry, and add a phosphoric acid solution with a mass fraction of 20% to the suspension slurry Adjust the pH value of the suspended slurry to 5, heat up to 55°C, and keep it warm for 12 hours to obtain mud for later use;

[0053] Grind the bentonite and pass it through a 400-mesh sieve, and then calcinate at a high temperature of 560°C for 3 hours to obtain light-burned bentonite. Mix 25 parts of diatomite and 12 parts of light-burned bentonite and pass through a 400-mesh sieve to obtain mixed clay. Silica airgel, 35 parts of the above mixed clay, and 250 parts of water are mixed to obtain a gel solution;

[0054] Mix the spare mud and the above-mentioned gel solution at a vo...

Embodiment 3

[0063] Acidic volcanic rocks are: pumice

[0064] Preparation of porous aluminum silicate fiberboard:

[0065] In parts by weight, add 80 parts of kaolin, 30 parts of alumina, 15 parts of titanium dioxide, and 22 parts of aluminum phosphate to 500 parts of water, stir and disperse to form a suspension slurry, and add a phosphoric acid solution with a mass fraction of 20% to the suspension slurry Adjust the pH value of the suspended slurry to 6, heat up to 60°C, and keep it warm for 15 hours to obtain mud for later use;

[0066] Grind the bentonite and pass it through a 400-mesh sieve, then calcinate at a high temperature of 600°C for 4 hours to obtain light-burned bentonite, mix 30 parts of diatomite and 15 parts of light-burned bentonite through a 400-mesh sieve to obtain mixed clay, and mix 50 parts of nano Silica airgel, 40 parts of the above mixed clay, and 300 parts of water are mixed to obtain a gel solution;

[0067] Mix the spare mud and the above-mentioned gel solut...

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Abstract

The invention discloses a preparation method of a multilayer aluminium silicate thermal insulation board and belongs to the technical field of preparation of thermal insulation materials. After high-temperature calcinations of bentonite added to the thermal insulation, micropores can be formed in the bentonite and inhibit oversintering among particles, expansible graphite can invade micropores, under the high-temperature effect, due to the large heat conductivity coefficient of the expansible graphite, the heat dissipation area of the outer surface of the thermal insulation board is increased,the inner layer of the thermal insulation board is cooled, composite aluminum silicate fiber on the surface of the thermal insulation board has high melting point and high toughness and has an enhanced protection effect on the thermal insulation board, the thermal insulation board prepared by the preparation method takes porous aluminum silicate fiber boards upper and lower layers, the middle isfilled with a composite enhancement emulsion and a high-temperature-resistant inorganic filler, a concentrate solution prepared from methyl silicone oil is polycarbosilane, the polycarbosilane and zirconium boride are used as enhanced binding components of the composite enhancement emulsion, the interface binding force of filler and the porous aluminum silicate fiber boards is improved, and the compressive strength of the thermal insulation board at high temperature is increased.

Description

technical field [0001] The invention discloses a preparation method of a multi-layer aluminum silicate heat insulation board, belonging to the technical field of heat insulation material preparation. Background technique [0002] With the development of social economy, the global energy consumption has risen sharply, and the shortage of energy has become a worldwide problem. One of the most effective measures to save energy is to adopt new technologies and new processes to develop high-efficiency heat insulation materials. The use of good thermal insulation materials in the industry is beneficial to reduce product energy consumption, reduce production costs, reduce the volume of the insulation layer, reduce the volume of equipment and facilities, and achieve a beautiful and harmonious effect, which has great social and economic benefits. [0003] At present, traditional thermal insulation materials are difficult to meet the higher requirements for thermal insulation materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B9/00B32B37/10B32B38/16C04B30/00
CPCB32B5/022B32B5/16B32B5/30B32B37/10B32B38/164B32B2260/021B32B2260/025B32B2260/04B32B2262/10B32B2264/10B32B2264/102B32B2264/108B32B2264/12B32B2307/304B32B2307/558C04B30/00C04B14/303C04B20/008C04B14/14C04B14/024
Inventor 王郑
Owner 王郑
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