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Thermal insulation composite and preparation method thereof

A thermal insulation material and thermal conductivity technology, applied in the field of composite thermal insulation material and its preparation, can solve the problems of non-fire resistance, strength not reaching multiple cycles, etc., and achieve excellent thermal insulation and fire resistance performance, wide application range and reasonable formula Effect

Inactive Publication Date: 2013-05-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although these insulation materials can keep warm, they are not fire-resistant, or have good heat-preservation and fire-resistant properties, but their strength cannot meet the requirements of repeated use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Prepare materials according to the following components in the following mass percentages:

[0039] 70% floating beads, 7% silica sand,

[0040] Aluminum silicate fiber 7%, water glass 15.3%,

[0041] Triacetin 0.7%;

[0042] Among them, the particle size of floating beads is 20-200 μm, and its main component is Al 2 o 3 and SiO 2 , bulk density is 0.3~0.5g / cm 3 , the thermal conductivity is 0.08~0.1W / m·k; the fiber diameter of aluminum silicate fiber is 2~6μm, and its main component is Al 2 o 3 and SiO 2 , the thermal conductivity is 0.13~0.15W / m K; the modulus of water glass>3.1, SiO 2 ≥26%, Na 2 O≥8.2%; the particle size of silica sand is 40-70 mesh, its mud content <0.1%, water content <0.4%;

[0043] (2) Pour the floating beads, additives, and aluminum silicate fibers into the sand mixer and stir until uniform; then add the curing agent, stir for 30 seconds, then add water glass, then stir evenly to obtain the mixed material, and finally pour the mixe...

Embodiment 2

[0045] (1) Prepare materials according to the following components in the following mass percentages:

[0046] Beads 60%, Corundum 12%,

[0047] Aluminum silicate fiber 10%, water glass 17%,

[0048] Ethylene glycol diacetate 1%;

[0049] Among them, the particle size of floating beads is 20-200 μm, and its main component is Al 2 o 3 and SiO 2 , bulk density is 0.3~0.5g / cm 3 , the thermal conductivity is 0.08~0.1W / m·k; the fiber diameter of aluminum silicate fiber is 2~6μm, and its main component is Al 2 o 3 and SiO 2 , the thermal conductivity is 0.13~0.15W / m K; the modulus of water glass>3.1, SiO 2 ≥26%, Na 2 O≥8.2%; the density of corundum is 3.9~4.1g / cm 3 , sintering temperature>1850℃;

[0050] (2) Pour the floating beads, additives, and aluminum silicate fibers into the sand mixer and stir until uniform; then add the curing agent, stir for 40 seconds, then add water glass, then stir evenly to obtain the mixed material, and finally pour the mixed material into ...

Embodiment 3

[0052](1) Prepare materials according to the following components in the following mass percentages:

[0053] Beads 75%, Zircon Powder 5%,

[0054] Aluminum silicate fiber 5%, water glass 13.8%,

[0055] Organic ester 1.2%;

[0056] Among them, the particle size of floating beads is 20-200 μm, and its main component is Al 2 o 3 and SiO 2 , bulk density is 0.3~0.5g / cm 3 , the thermal conductivity is 0.08~0.1W / m·k; the fiber diameter of aluminum silicate fiber is 2~6μm, and its main component is Al 2 o 3 and SiO 2 , the thermal conductivity is 0.13~0.15W / m K; the modulus of water glass>3.1, SiO 2 ≥26%, Na 2 O≥8.2%; the density of zircon powder is 4.6~4.7g / cm 3 , refractoriness>1550℃;

[0057] (2) Pour the floating beads, additives, and aluminum silicate fibers into the sand mixer and stir until uniform; then add the curing agent, stir for 20 seconds, then add water glass, then stir evenly to obtain the mixed material, and finally pour the mixed material into In the f...

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Abstract

The invention provides a thermal insulation composite and a preparation method thereof. The preparation method comprises the following steps of preparing the following components by mass percent: 60-75% of floating bead, 5-12% of additive, 5-10% of alumina silicate fiber, 10-17% of water glass and 0.7-1.2% of curing agent, stirring the floating bead, the additive and the alumina silicate fiber uniformly, adding the curing agent, stirring for 20-40s, adding the water glass, stirring uniformly to obtain a mixed material, pouring the mixed material into a forming mold for extrusion and compactness, standing for 30-60min in the mold, taking out, evenly placing in a dried and ventilated place, and obtaining the thermal insulation composite. The thermal insulation composite has novelty, creativity and practicability that the thermal insulation composite is reasonable in formula, concise in process, convenient to form, and easy to operate. The thermal insulation composite is high in compressive strength and tensile strength, and can be recycled for many times while excellent thermal insulation and fire resistance are ensured. The thermal insulation composite is nontoxic and pollution-free, and properties of the thermal insulation composite are unaffected after long-term storage.

Description

technical field [0001] The invention relates to a thermal insulation material, in particular to a composite thermal insulation material and a preparation method thereof, belonging to the technical field of thermal insulation materials. Background technique [0002] my country's thermal insulation materials are currently in a period of development. The thermal insulation and refractory materials used in China mainly include the following types: [0003] Expanded perlite: Expanded perlite has been impacted by mineral wool products for a period of time, but due to its advantages in price and construction performance, it occupies a large proportion in building and industrial insulation materials, about 44% of that of insulation materials. %. [0004] Diatomaceous earth: Diatomaceous earth is a biogenic siliceous sedimentary rock whose basic constituent is SiO 2 , usually above 80%; diatomaceous earth is used as thermal insulation material, and its maximum temperature is about ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B14/38C04B111/28
Inventor 李莉张方明超吕宁
Owner KUNMING UNIV OF SCI & TECH
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