A kind of high-temperature dimensionality nano heat insulation material and its preparation method

A nano-insulation material and dimension-shaped technology, applied in the direction of layered products, can solve the problems of reducing the heat sealing performance of the material, increasing the linear shrinkage, and reducing the heat insulation performance of the material, so as to improve the dimensional stability at high temperature and improve the maximum use Temperature, the effect of improving mechanical properties

Active Publication Date: 2018-08-31
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the maximum operating temperature of nano-insulation materials can reach 1200°C, but due to the easy sintering of nanoparticles at high temperatures, the thermal insulation performance of the material decreases and the linear shrinkage increases, which limits the application of nano-insulation materials in higher temperature environments
In addition, when the nano-insulation material is used in a high-temperature environment for a long time, the shrinkage of the material line increases, resulting in a gap that increases the transmission of aerodynamic heat and reduces the heat-sealing performance of the material

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 high-temperature dimensionality nano heat insulation material and its preparation method
  • A kind of high-temperature dimensionality nano heat insulation material and its preparation method
  • A kind of high-temperature dimensionality nano heat insulation material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] Such as figure 1 Shown is the flow chart of the preparation process of the high-temperature dimensional nano-insulation material of the present invention. The preparation method of the high-temperature dimensional nano-insulation material of the present invention specifically includes the following steps:

[0037] (1) Paste a ceramic fiber felt on one side of the carbon fiber cloth, the thickness of the ceramic fiber felt is 3-10 mm.

[0038] The ceramic fiber felt is pasted on one side surface of the carbon fiber cloth by polysiloxane, and the polysiloxane is made of R 0 Si(OR) 3 and R 1 R 2 Si(OR) 2 Mixed and hydrolyzed to get, where R 0 , R 1 , R 2 for -CH 3 、-C 2 h 5 、-CH 2 =CH or -C 6 h 5 , R 1 and R 2 A group in can also be -H, R is -CH 3 、-C 2 h 5 or -C 4 h 9 , the R 0 Si(OR) 3 with R 1 R 2 Si(OR) 2 The mole fraction ratio is 1:0~0.25.

[0039] (2) Wrap the carbon fiber cloth with a ceramic fiber felt on one side of the surface on the su...

Embodiment 1

[0043] (1) Preparation of polysiloxane binder: first, 272.0g CH 3 Si(OCH 3 ) 3 , 53.0gHCH 3 Si(OCH 3 ) 2 and 126.7g H 2 O mixed and stirred for 6 hours to obtain a polysiloxane solution; then, the polysiloxane solution was heated to volatilize the solvent, and the viscosity of the solution gradually increased until the solution mass was 45% of the initial solution mass to obtain a polysiloxane binder.

[0044] (2) Coat the surface of one side of the carbon fiber cloth with an adhesive, paste an alumina fiber felt with a thickness of 3 mm on the surface of the carbon fiber cloth, and cut it into a suitable size according to the size of the nano-insulation material.

[0045] (3) Wrap the carbon fiber cloth with alumina fiber felt on one side of the surface in step (2) on the surface of the alumina nano heat insulation material, and the alumina fiber felt is in contact with the alumina nano heat insulation material.

[0046] (4) Brush the polysiloxane solution prepared in s...

Embodiment 2

[0050] (1) Preparation of polysiloxane binder: first, 204.0g CH 3 Si(OCH 3 ) 3 , 20.1gHCH 3 Si(OC 2 h 5 ) 2 and 75.2 g H 2 O mixed and stirred for 8 hours to hydrolyze the silane; polysiloxane solution was obtained; then, the polysiloxane solution was heated to volatilize the solvent, and the solution viscosity gradually increased until the solution mass was 55% of the initial solution mass to obtain polysiloxane binder.

[0051] (2) Coat the surface of one side of the carbon fiber cloth with an adhesive, paste the zirconia fiber felt with a thickness of 5mm on the surface of the carbon fiber cloth, and cut it into a suitable size according to the size of the nano-insulation material.

[0052] (3) Wrap the carbon fiber cloth with zirconia fiber felt on one side of the surface in step (2) on the surface of the alumina nano-insulation material and contact the zirconia fiber mat with the alumina nano-insulation material.

[0053] (4) Brush the polysiloxane solution prepar...

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
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a high-temperature shape keeping heat insulation nano-material and a preparation method thereof. The high-temperature shape keeping heat insulation nano-material comprises a heat insulation nano-material, a ceramic fibrofelt and a coating layer coated carbon fiber cloth, the ceramic fibrofelt is pasted on one side surface of the carbon fiber cloth, the surface of the heat insulation nano-material is coated with the ceramic fibrofelt pasted carbon fiber cloth, the ceramic fibrofelt is in contact with the heat insulation nano-material, the other side surface of the carbon fiber cloth contains a coating layer, and the coating layer is a SiOC ceramic layer obtained after ceramic treatment of carbon fibers and polysiloxane; and the heat insulation nano-material is an alumina heat insulation nano-material or a silicon oxide heat insulation nano-material, the ceramic fibrofelt is alumina fibrofelt, mullite fibrofelt or zirconia fibrofelt. The high-temperature shape keeping heat insulation nano-material has the characteristics of high temperature resistance, good heat insulation performance, inhibition of linear shrinkage of heat insulation nano-materials in high temperature environment, increase of the high temperature stability of materials, and potential application prospect in high-temperature heat insulation and energy saving fields.

Description

technical field [0001] The invention relates to a high-temperature dimensional shape nano heat-insulating material and a preparation method thereof, belonging to the technical field of high-temperature heat-insulating materials. Background technique [0002] Nano heat insulation material has excellent heat insulation performance and can be used as a heat insulation material for high temperature kilns and the like. At present, the maximum operating temperature of nano-insulation materials can reach 1200°C, but due to the easy sintering of nanoparticles at high temperatures, the thermal insulation performance of the material decreases and the line shrinkage increases, which limits the application of nano-insulation materials in higher temperature environments. In addition, when the nano-insulation material is used in a high-temperature environment for a long time, the shrinkage of the material line increases, resulting in a gap that increases the transmission of aerodynamic he...

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): B32B9/00B32B9/04
CPCB32B5/02B32B5/26B32B9/00B32B9/047B32B2262/10B32B2262/105B32B2262/106
Inventor 李俊宁吴文军杨海龙徐云辉胡子君孙陈诚
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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