Inorganic nanometer gas condensation sand insulation material and preparation method thereof

A technology of inorganic nano and thermal insulation materials, applied in the field of thermal insulation materials, can solve the problems of complex composition, cumbersome preparation process, and failure to realize nano-pores of porous materials, and achieve the effects of good thermal insulation and reasonable hydrophobicity.

Inactive Publication Date: 2013-02-06
马炼峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resulting product is in the form of a coating, the composition of the material is complex and the preparation process is cumbersome
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Method used

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  • Inorganic nanometer gas condensation sand insulation material and preparation method thereof
  • Inorganic nanometer gas condensation sand insulation material and preparation method thereof
  • Inorganic nanometer gas condensation sand insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Select 100 kilograms of the above-mentioned aerospace-grade nano-silica airgel, add 5 kilograms of hydrofluoric acid aqueous solution with a concentration of 15% (percentage by weight), mix at room temperature in the above-mentioned equipment 1, and make the silica sol.

[0088]Break 100 kg of rock wool to a particle size of less than 3 mm, mix it with the airgel in the above-mentioned sol state in the above-mentioned equipment 1, and run it in the above-mentioned equipment 2 for 5 minutes, after completing the catalysis, dry it at room temperature to form a Silica airgel is a granular air-condensed sand insulation material.

Embodiment 2

[0090] Select 100 kg of the above-mentioned aerospace-grade silica airgel, add 10 kg of nitric acid aqueous solution with a concentration of 12% (percentage by weight), and mix in the above-mentioned equipment 1 at room temperature to make the silica sol.

[0091] Crush 100 kg of perlite to less than 3 mm, mix it with the airgel in the above sol state in the above equipment 1, and run it in the above equipment 2 for 3 minutes, after completing the catalysis, dry it at room temperature to form a Airgel is a granular air-condensed sand insulation material.

Embodiment 3

[0093] Select 100 kilograms of the above-mentioned aerospace-grade silica airgel, add 15 kilograms of hydrochloric acid aqueous solution with a concentration of 15% (weight percentage), and mix in the above-mentioned equipment 1 at room temperature to make the silica sol.

[0094] 100 kg of vermiculite particles are crushed to less than 3 mm, mixed with the airgel in the above-mentioned sol state in the above-mentioned equipment 1, and catalytically run in the above-mentioned equipment 2 for 6 minutes. Silica airgel is a granular airset sand insulation material.

[0095] The inorganic nano-air coagulated sand that above-mentioned embodiment obtains, particle size is 0.1-2mm, and bulk density (weight per unit volume) is 50-100kg / m 3 , The thermal conductivity is 0.016-0.023W / m.K.

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Abstract

The invention relates to an inorganic nanometer gas condensation sand insulation material which is formed by carrying out catalytic combination on an inorganic porous material and silica aerogel to realize the in-pore structure nanocrystallization of the inorganic porous material. The invention also relates to a preparation method of the inorganic nanometer gas condensation sand insulation material. The preparation method comprises the steps of mixing the raw material, namely the silica aerogel, with acid to prepare a raw material in a sol state, mixing the raw material in the sol state with the inorganic porous material, catalyzing the mixed raw material in a microwave environment to ensure that the inorganic porous material is fully expanded and the raw material in the sol state enters into the pore passages of the expanded inorganic porous material to be subjected to gelatination, and drying the mixed material to obtain inorganic nanometer gas condensation sand. The obtained inorganic nanometer gas condensation sand is good in thermal insulation and hydrophobicity, is relatively reasonable in cost, and can be widely applied to buildings, petroleum, chemicals, thermal power generation, oil pipelines, nuclear industries and other high-temperature industries and fields.

Description

technical field [0001] The invention relates to thermal insulation materials, in particular to an inorganic nano-air coagulated sand thermal insulation material assembled with nano-silica airgel and a preparation method thereof. Background technique [0002] At present, the world is facing many major problems that threaten human survival, such as energy shortage, environmental pollution, and climate warming. Energy conservation and emission reduction directly affect human survival and development. This has become the consensus of all mankind. Thermal insulation materials can directly block the dissipation of energy, so as to achieve the purpose of energy saving and emission reduction, so they are widely used in construction, petroleum, chemical industry, thermal power generation, oil pipeline, nuclear industry and other high temperature industries and fields. [0003] The total energy consumption of buildings is large and the energy efficiency is low, which is an important...

Claims

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Application Information

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IPC IPC(8): C04B28/24
Inventor 马炼峰
Owner 马炼峰
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