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Sintered fireproof thermal-insulation material and preparation method thereof

A fireproof heat preservation and raw material technology, applied in the field of sintered fireproof heat preservation material and its preparation, can solve the problems of high bulk density, low strength, low bending resistance, etc., and achieve the effect of simple preparation process, low cost and excellent performance

Inactive Publication Date: 2014-11-19
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic products are generally flammable and not resistant to high temperature; inorganic products generally have problems of high bulk density, low strength, and low flexural resistance; organic-inorganic composite materials also have compatibility problems between materials

Method used

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  • Sintered fireproof thermal-insulation material and preparation method thereof
  • Sintered fireproof thermal-insulation material and preparation method thereof
  • Sintered fireproof thermal-insulation material and preparation method thereof

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preparation example Construction

[0041] Another embodiment of the present invention provides a preparation method for the above-mentioned sintered fireproof and heat-preserving material, including:

[0042] 1) Choose sodium (potassium) water glass and NaOH / KOH as raw materials, dissolve NaOH / KOH in water, and control the molar concentration at 5-15mol / L; choose sodium (potassium) water glass, and control the modulus to 2-3.5; Mix the two, and control the overall modulus of the mixture at 1.0-2.0; stir for 1-10 minutes, place in a plastic container, and let stand for 12-48 hours.

[0043] 2) Mix and stir the powder raw material, alkaline activator, foam stabilizer and water, and then mix and stir with the foaming agent. The stirring time is 1-10 minutes, and it can be stirred for 1, 3, 5, 7, 10 minutes, etc. until the stirring Uniform;

[0044] 3) Cast the slurry into shape, and adjust the pouring diffusion degree to about 15%;

[0045] 4) After the green body is placed in the resting room, it can be 40, 50,...

Embodiment 1

[0052] Measure 350g of sodium water glass, the modulus is 3.25, the density is 1.38g / ml, and the solid content is 36.7wt.%. Weigh 40g NaOH and 40g water and mix evenly, then mix with water glass and 0.04g triisopropanolamine Evenly, place for 24 hours as a liquid alkaline activator.

[0053] Weigh 300g of Class I fly ash as powder raw material, weigh 15g of H 2 o 2 The foaming agent is added to the powder raw material and mixed evenly.

[0054] Mix the liquid alkaline activator with the powder raw material, stir evenly, add foaming agent, and stir for 3 minutes.

[0055] Pour the mixed material into a steel mold or a plastic mold, seal it, and let it rest for 60 minutes at 40°C.

[0056] The green body is turned over and demolded, and cut with a cutting machine to remove excess bottom material and top material.

[0057] Put the cut semi-finished product into a steam curing kettle, and cure it for 1 hour at a temperature of 90°C and a curing humidity of 90%. After steam cur...

Embodiment 2

[0060] Measure 240g of sodium water glass, the modulus is 3.25, the density is 1.38g / ml, and the solid content is 36.7wt.%. Take by weighing 37g NaOH and 60g water and mix evenly, then mix with water glass, 0.024g dodecylbenzenesulfonate Sodium bicarbonate mixed evenly, left for 24 hours, as a liquid alkaline activator.

[0061] Weigh 240g of Class II fly ash, 60g of slag as powder raw material, weigh 9g H 2 o 2 Foaming agent, add to the powder raw material and mix evenly.

[0062] Mix the liquid alkaline activator with the powder raw material, stir evenly, add foaming agent, and stir for 1 min.

[0063] Pour the mixed material into a steel mold or a plastic mold, seal it, and let it rest for 30 minutes at 60°C.

[0064] The green body is turned over and demolded, and cut with a cutting machine to remove excess bottom material and top material.

[0065] Put the cut semi-finished product into a steam curing kettle, and cure it for 3 hours at a temperature of 90°C and a curi...

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Abstract

The invention discloses a sintered fireproof thermal-insulation material and a preparation method thereof. The fireproof thermal-insulation material is prepared from the following raw materials in percentage by mass: 35-55% of powder raw material, 30-55% of alkaline excitant, 1-5% of foaming agent, 0.01-0.1% of foam stabilizer and the balance of water. The mineral raw material contains 70-100 wt.% of fly ash and the balance of other powder raw material, including one of mineral slag, steel slag, silica fume, metakaolin, circulating fluidized bed bottom ash, red mud and caustic sludge. The preparation method comprises the following steps: mixing and stirring the alkaline excitant, which is a mixture of water glass and NaOH / KOH, with the powder raw material, foaming agent and foam stabilizer, carrying out cast forming, steaming at 50-90 DEG C for 1-24 hours, curing in air for 7-28 days, and sintering at 800-1200 DEG C for 1-10 hours to obtain the fireproof thermal-insulation material.

Description

technical field [0001] The invention relates to a sintered fireproof and thermal insulation material and a preparation method thereof. technical background [0002] The construction industry consumes a lot of resources and energy, and also produces solid waste, sewage, noise, etc. Green building energy conservation is one of the important ways to reduce environmental pollution and solve the energy crisis. Building energy consumption accounts for about 30% of the total energy consumption in society. On the one hand, green buildings need to use energy-saving, environmentally friendly, and heat-insulating materials to ensure that the energy consumption of buildings is minimized; on the other hand, building materials themselves need to be green and energy-saving, using as much solid waste as possible and generating as little waste as possible. [0003] At present, there are many kinds of raw materials used in my country's fireproof and thermal insulation materials, such as orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02
Inventor 刘泽邵宁宁秦俊峰孔凡龙
Owner CHINA UNIV OF MINING & TECH (BEIJING)