Lightweight heat insulating material and method for making same

A light heat insulation and raw material technology, applied in ceramic products, other household utensils, sustainable waste treatment, etc., can solve the problems of unstable performance and complicated manufacturing process, and achieve the effect of stable performance and simple manufacturing process

Inactive Publication Date: 2008-05-21
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned prior art has at least the following d

Method used

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preparation example Construction

[0027] The preparation method of the above-mentioned lightweight heat insulating material of the present invention, its preferred specific embodiment can be, comprise steps:

[0028] First, mix and stir the solid raw material containing silicon and aluminum, the foaming agent and the liquid alkaline activator for 1 to 10 minutes, and stir for 1, 3, 5, 8, 10 minutes, etc., until the stirring is uniform;

[0029] Then, pour it into the mold and carry out curing. The curing temperature is 20-120°C, which can be 20, 40, 60, 80°C, etc.;

[0030] The curing humidity is 70-95%, which can be 70, 80, 90, 95%, etc.;

[0031] The curing time is 2 to 24 hours.

[0032] After that, it is demolded and dried.

[0033] When mixing solid raw materials containing silicon and aluminum, foaming agent and liquid alkaline activator, lightweight aggregates can also be added together for mixing. Lightweight aggregates are one or more of the following raw materials:

[0034] Perlite and its product...

specific Embodiment 1

[0045] The coal gangue was calcined at 700°C for 2 hours to obtain an amorphous material. Weigh 510 g of this material, control the particle size to 600 mesh, and use it as a solid raw material.

[0046] Weigh 1g of foaming agent, add it to the solid raw material, and mix well.

[0047] Measure 105ml of water glass, modulus: 3, density: 1.38g / ml; measure 105ml of sodium hydroxide solution with a concentration of 26.3%; mix the water glass solution and sodium hydroxide solution, stir for 3 minutes, and place it for 24 hours as liquid ingredients.

[0048] Combine the liquid and solid ingredients and stir for 6 minutes.

[0049] The mixed material is poured into a steel mold or a plastic mold, sealed, put in a curing box, and cured at a temperature of 80° C. for 24 hours.

[0050] The cured material was demolded and dried naturally in the air for 7 days to obtain a lightweight polymer material.

[0051] The bulk density of the obtained sample measured after 7 days was 0.69g / ...

specific Embodiment 2

[0052] The coal gangue was calcined at 750°C for 2 hours to obtain an amorphous material. Weigh 382.5g of the material and 127.5g of slag, control the calcined coal gangue particle size to 600 mesh, and control the slag particle size to 300 mesh as solid raw materials.

[0053] Weigh 1.1g foaming agent, add to the solid raw material, and mix well.

[0054] Measure 100ml of water glass, modulus: 3.2, density: 1.40g / ml; measure 100ml of sodium hydroxide solution with a concentration of 25.0%; mix the water glass solution and sodium hydroxide solution, stir for 5 minutes, and place for 36 hours as liquid ingredients.

[0055] Combine the liquid and solid ingredients and stir for 8 minutes.

[0056] The mixed material is poured into a steel mold or a plastic mold, sealed, put in a curing box, and cured at a temperature of 40° C. for 24 hours.

[0057] The cured material was demolded and dried naturally in the air for 7 days to obtain a lightweight polymer material.

[0058]Gai...

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Abstract

The invention discloses a light isolated material and a preparation method thereof, including an aluminates polymer, the molar ratio of silicon (Si) and aluminum (Al) in which is more than or equal to one and less than or equal to three and which includes solid raw materials containing silicon and aluminum of 50-85 weight percent of fly ash, kaolin, coal gangue, coal slag, etc.; 14.5-48 percent of liquid alkaline activator; 0.5-2 percent of foaming agent. The liquid alkaline activator includes caustic solution and water glass, which are mixed and stirred with the solid raw materials and the foaming agent to produce a roof heat insulation plate, which is applied to both the direct pouring and the die molding prefabrication and can be used both for the heat insulation or the cold insulation of cold or heat equipment and for making large size building wallboards for heat insulation, deafening and fireproofing.

Description

technical field [0001] The invention relates to a heat insulating material, in particular to a lightweight heat insulating material and a preparation method thereof. Background technique [0002] Lightweight heat insulating refractory materials refer to refractory materials with high porosity, low bulk density and low thermal conductivity. The light insulation materials in the prior art mainly include perlite and its products, expanded vermiculite and its products, rock wool and its products, slag wool and its products, glass wool and its products, polystyrene foam, polyurethane Foam plastics, phenolic foam plastics, foam glass products, calcium silicate insulation products, waste paper fiber insulation materials and metal insulation materials, etc. Commonly used cement, water glass, magnesium phosphate, asphalt and magnesia cement perlite products and expanded vermiculite products have an apparent density of less than 0.5g / cm3, a compression resistance of 0.2-1MPa, and a t...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/08C04B14/04C04B38/02
CPCC04B2111/28C04B28/006C04B2111/00586Y02P40/10Y02W30/91C04B12/04C04B14/106C04B18/08C04B18/12C04B18/141C04B22/062C04B38/10
Inventor 韩敏芳贾屹海
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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