Inorganic heat-insulating material and preparation method thereof

A thermal insulation and inorganic technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of limited thermal insulation effect, thick thermal insulation layer, etc., and achieve low cost, improved thermal insulation performance, and good adhesion Good results

Inactive Publication Date: 2011-02-16
童金荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an inorganic thermal insulation material and a preparation method thereof, so as to overc...

Method used

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  • Inorganic heat-insulating material and preparation method thereof
  • Inorganic heat-insulating material and preparation method thereof

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Embodiment 1

[0020] A kind of inorganic thermal insulation material described in this embodiment is made of raw materials including the following weight (kg): phosphoric acid 20, aluminum hydroxide 5, silicate 5, aluminum silver paste auxiliary agent 7, potassium titanate crystal Whiskers 10, expanded perlite 5, ceramic microspheres 15, 803 thermal insulation powder 3.5, carbon fiber 8, sepiolite 5, magnesium hydroxide 7, boron nitride 1, glass powder 2.4, nano-zirconia 1, carboxymethyl fiber Plain sodium 2, calcium oxide 0.1, calcium-based bentonite 3; among them, potassium titanate whiskers, preferably nano-scale potassium hexatitanate whiskers; expanded perlite is preferably closed-cell expanded perlite, and the particle diameter is 0.1-2mm. 30% of the diameter is 0.1-0.8mm, 40% of the particle diameter is 0.9-1.5, and 30% of the particle diameter is 1.5-2; Pretreated by indium tin oxide, the vacuum pore diameter of the microbeads is between 100-500 nanometers; the carbon fiber diameter...

Embodiment 2

[0028] A kind of inorganic thermal insulation material described in this embodiment is made of raw materials including the following weight (kg): phosphoric acid 15, aluminum hydroxide 7, silicate 2, aluminum silver paste auxiliary agent 5, expanded perlite 12 , ceramic microspheres 9, nano-silica airgel 6, carbon fiber 5, sepiolite 15, wollastonite needle powder 5, boron nitride 3, chromium trioxide 4.5, glass powder 3, boric acid 1.5, carboxylate Sodium methylcellulose 5, calcium-based bentonite 2; among them, the expanded perlite is preferably closed-cell expanded perlite, and the particle diameter is 0.1-2mm, 30% of the particle diameter is 0.1-0.8mm, and 40% of the particle diameter is 0.9-1.5mm. %, the particle diameter is 1.5-2, accounting for 30%; the ceramic microsphere particles are between 2500-12500 mesh, and it is a vacuum structure. Between; the density of nano-silica airgel should be less than 40 kg / m3; the diameter of carbon fiber is less than 325 mesh, the tem...

Embodiment 3

[0031]A kind of inorganic thermal insulation material described in this embodiment is made of raw materials including the following weight (kg): phosphoric acid 10, aluminum hydroxide 3, silicate 0.5, aluminum silver paste additive 2, potassium titanate crystal Whiskers 5.2, expanded perlite 17, nano-silica airgel 2.2, 803 thermal insulation powder 9.1, carbon fiber 13, wollastonite needle powder 9, magnesium hydroxide 5, boron nitride 6, chromium trioxide 2.5, Boric acid 6.5, sodium carboxymethyl cellulose 1, calcium-based bentonite 8; among them, expanded perlite is preferably closed-cell expanded perlite, and the particle diameter is 0.1-2mm, and the particle diameter is 0.1-0.8mm, accounting for 30%, and the particle diameter is 0.9 -1.5 accounts for 40%, particle diameter 1.5-2 accounts for 30%; ceramic microsphere particles are between 2500-12500 mesh, and it is a vacuum structure, the outer surface is pretreated by indium tin oxide, and the vacuum aperture of the microsp...

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Abstract

The invention relates to an inorganic heat-insulating material and a preparation method thereof. The inorganic heat-insulating material is prepared from the following raw materials in parts by weight: 15-37 parts of basic material, 45-70 percent of pigment and filler and 9-26 parts of auxiliary agent, wherein the basic material comprises the following raw materials in parts by weight: 10-20 partsof phosphoric acid, 3-8 parts of aluminium hydroxide, 2-8 parts of aluminum-silver slurry auxiliary agent, 0.5-5 parts of silicate and 1-5 parts of sodium carboxymethyl cellulose; the pigment and filler is one or a combination of potassium titanate whiskers, expanded perlite, ceramic microspheres, nano-silicon dioxide aerogel, heat-insulating powder, carbon fibers, meerschaum, needle-shaped wollastonite powder and magnesium hydrate; and the auxiliary agent is one or a combination of boron nitride, dichromium trioxide, glass powder, boric acid, nano-zirconia, calcium oxide and calcium-based bentonite. The invention inorganic heat-insulating material has strong insulating capability for solid conductive heat at high temperature (150-500 DEG C) and simultaneously also has strong insulating capability for radiation and flow conductive heat.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to an inorganic thermal insulation material and a preparation method thereof. Background technique [0002] Insulation materials currently on the market, such as: rock wool, aluminum silicate wool, silicate, polyurethane foam, etc. The thickness of the insulation layer is generally thick, and the heat loss is large, especially for the steel-covered steel buried pipe of the steam pipe network. Due to the thickness of the insulation layer, the cost of pipelines, transportation, and installation have increased. There are three modes of heat conduction: solid, radiation, and convection. However, the insulation materials currently on the market are basically based on isolating solid conduction heat, and cannot solve radiation and convection heat conduction well, especially at high temperatures. . As the temperature rises, radiation and convective conduction heat increase, and graduall...

Claims

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Application Information

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IPC IPC(8): C04B14/38C04B14/04C04B28/00
CPCC04B28/342C04B14/303Y02W30/91
Inventor 童金荣
Owner 童金荣
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