A kind of low-dimensional sio2 high-strength light-weight thermal insulation material and preparation method thereof

A thermal insulation material and high-strength technology, applied in the field of refractory materials, can solve the problems of complex preparation process, low service temperature, high thermal conductivity, etc., and achieve the effect of solving low strength, reducing molding pressure and improving structural strength

Active Publication Date: 2020-12-08
洛阳三合新材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on this principle, the existing thermal insulation materials are concentrated on the development of microporous materials, such as thermal insulation felt insulation materials made of silica airgel and reinforcing fibers, which utilize the nanoporous structure in silica airgel to effectively It is widely used in the field of building materials to reduce the thermal conductivity of the material and enhance its sound insulation effect. However, the silica airgel used in it is a synthetic raw material, the preparation process is complicated, and the production cost is high. It is rarely used in the field of refractory materials; Composite heat insulation material prepared by nanoporous siliceous powder, reinforcing fiber and other additives, which uses the nanoporous structure of siliceous powder to improve the thermal insulation performance of the material, but the use temperature of this material is relatively low, such as usually used at around 600°C , and the thermal conductivity at this temperature is about 0.05W / m·k, which still cannot meet the use in a relatively high environment. At the same time, the nanoporous silicon powder used is actually synthesized bulk porous silica by chemical methods such as sol-gel. be made of
Therefore, in the field of refractory materials, the insulation materials made of silica airgel, nanoporous siliceous materials and fibers have the problems of complicated preparation process and high production cost. The thermal conductivity of pipes is still high when used, which cannot fully meet the needs of energy saving and emission reduction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of low-dimensional sio2 high-strength light-weight thermal insulation material and preparation method thereof
  • A kind of low-dimensional sio2 high-strength light-weight thermal insulation material and preparation method thereof
  • A kind of low-dimensional sio2 high-strength light-weight thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A low-dimensional SiO 2 High-strength lightweight insulation material, the low-dimensional SiO 2 High-strength and lightweight insulation materials are prepared from the following raw materials in weight percentage:

[0032] Silica powder with a particle size of 300-500nm: 55%

[0033] Silica powder with a particle size of 100-200nm: 30%

[0034] CaO-MgO-SiO 2 Quality refractory fiber: 15%;

[0035] Wherein, the silica fine powder with a particle size of 300-500nm and the silica fine powder with a particle size of 100-200nm both contain the following components: SiO 2 ≥98.5%, C≤0.8%, Al 2 o 3 ≤0.13%, MgO≤0.16%, CaO≤0.07%, Fe 2 o 3 ≤0.01%, K 2 O≤0.33%; and all are amorphous spherical;

[0036] Among them, the CaO-MgO-SiO 2 The length of high-quality refractory fiber is 3-5mm; the mass percentage of CaO is 30.0%, the mass percentage of MgO is 5.0%, and the mass percentage of SiO 2 The mass percentage content is 65.0%.

[0037] The aforementioned low-dimension...

Embodiment 2

[0043] A low-dimensional SiO 2 High-strength lightweight insulation material, the low-dimensional SiO 2 High-strength and lightweight insulation materials are prepared from the following raw materials in weight percentage:

[0044] Silica powder with a particle size of 300-500nm: 45%

[0045] Silica powder with a particle size of 100-200nm: 30%

[0046] CaO-MgO-SiO 2 Quality refractory fiber: 25%;

[0047] Wherein, the silicon dioxide fine powder with a particle size of 300-500 nm, that is, the silicon dioxide fine powder with a particle size of 100-200 nm, all contains the following components: SiO 2 ≥98.5%, C≤0.8%, Al 2 o 3 ≤0.13%, MgO≤0.16%, CaO≤0.07%, Fe 2 o 3 ≤0.01%, K 2 O≤0.33%; and all are amorphous spherical;

[0048] Among them, the CaO-MgO-SiO 2 The length of high-quality refractory fiber is 3-5mm; the content of CaO is 35.0%, the content of MgO is 8.0%, and the content of SiO 2 The content is 57.0%.

[0049] Above-mentioned low-dimensional SiO2 The prep...

Embodiment 3

[0055] A low-dimensional SiO 2 High-strength lightweight insulation material, the low-dimensional SiO 2 High-strength and lightweight insulation materials are prepared from the following raw materials in weight percentage:

[0056] Silica powder with a particle size of 300-500nm: 40%

[0057] Silica powder with a particle size of 100-200nm: 40%

[0058] CaO-MgO-SiO 2 Quality refractory fiber: 20%;

[0059] Wherein, the silicon dioxide fine powder with a particle size of 300-500 nm, that is, the silicon dioxide fine powder with a particle size of 100-200 nm, all contains the following components: SiO 2 ≥98.5%, C≤0.8%, Al 2 o 3 ≤0.13%, MgO≤0.16%, CaO≤0.07%, Fe 2 o 3 ≤0.01%, K 2 O≤0.33%; and all are amorphous spherical;

[0060] Among them, the CaO-MgO-SiO 2 The length of high-quality refractory fiber is 3-5mm; the content of CaO is 33.0%, the content of MgO is 7.0%, and the content of SiO 2 The content is 60.0%.

[0061] The aforementioned low-dimensional SiO 2 A m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a low-dimension SiO2 high-intensity lightweight heat insulation material and a preparation method thereof. The preparation method is characterized in that silicon dioxide micro-powder with granularity of 300-500nm and silicon dioxide micro-powder with granularity of 100-200nm are used as the main raw materials; CaO-MgO-SiO2 refractory fibers are used as the reinforcement materials, and on that basis, the low-dimension SiO2 high-intensity lightweight heat insulation material is prepared; ultrafine inorganic fiber spraying gum is arranged on the material surface; and thenthe material is burnt under low temperature to obtain the lightweight heat insulation material. According to the method, the byproduct, namely, the silicon dioxide micro-powder is used as the main material, and the bio-soluble fibers which are harmless to human body are used as the reinforcement materials, and moreover, the spraying gum is arranged on the surface of a brick blank, so that the intensity of the brick blank is improved; the forming pressure is reduced; the inner voidage of the brick blank is increased; the heat conducting rate of the heat insulation material is decreased; the material is burnt under low temperature, so that he product intensity is improved, and moreover, the micropore structure of the heat insulation material remains; the heat conducting rate in working underhigh temperature is not increased; the heat insulation brick is prevented from absorbing moisture and hydrating. Therefore, the heat insulation performance is further improved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials. Specifically related to a low-dimensional SiO 2 High-strength light-weight thermal insulation material and preparation method thereof. [0002] technical background [0003] With the continuous consumption of resources, energy problems are becoming more and more significant, and human beings have higher and higher requirements for energy conservation and environmental protection. As a key material in the high-temperature kiln industry, refractory materials play a decisive role in the energy-saving and emission-reduction of high-temperature industrial industries through their thermal conductivity. Among them, light-weight thermal insulation refractory materials are of great significance as the kiln insulation layer. [0004] At present, the light-weight thermal insulation refractory materials mainly include refractory fiber and calcium silicate board, etc., the thermal conductivity o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/14C04B35/622C04B35/80C04B38/06C04B35/64
CPCC04B35/803C04B35/14C04B35/622C04B35/62204C04B35/64C04B35/66C04B38/06C04B2235/522C04B2235/5445C04B2235/656C04B2235/96C04B2235/9607
Inventor 张安国陈光亮
Owner 洛阳三合新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap