Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of high temperature-resisting mullite fiber porous heat insulation tile

A technology of mullite fiber and heat-insulating tile is applied in the field of preparation of high-temperature resistant mullite fiber porous heat-insulating tile, which can solve the problems of not high temperature resistance, inability to coat fibers well, and the like. Uniform distribution, good coating, good fiber coating effect

Inactive Publication Date: 2017-05-17
TIANJIN UNIV
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems that the existing mullite fiber thermal insulation tile binder has insufficient temperature resistance and cannot coat the fibers well, and provides a preparation of high temperature resistant mullite fiber porous thermal insulation tile Method, polycrystalline mullite fiber was selected as the matrix, silicon powder was used as the binder, and a three-dimensional homogeneous mullite fiber thermal insulation material with excellent spatial structure was prepared by using the gel injection molding process and in-situ solidification.

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
  • Preparation method of high temperature-resisting mullite fiber porous heat insulation tile
  • Preparation method of high temperature-resisting mullite fiber porous heat insulation tile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, a method for preparing a mullite fiber porous heat-insulating tile is specifically carried out according to the following steps:

[0038] (1) The polycrystalline mullite fiber is sheared by a fiber pulverizer, and the shearing time is 2 minutes to obtain a chopped mullite fiber with a length of 600 μm;

[0039] (2) Mix 20g of acrylamide (AM), 100g of tert-butanol (TBA) and 2g of methylenebisacrylamide (MBAM) evenly to obtain a premixed solution;

[0040] (3) Weigh 100g of the premixed solution obtained in step (2), add 2g of Si powder, and stir with an electromagnetic stirrer until the silicon powder is completely dispersed in the premixed solution to obtain a premixed slurry;

[0041] (4) Put the slurry obtained in the step (3) into a ball mill and carry out ball milling for 6h to obtain a more evenly dispersed ceramic slurry;

[0042] (5) Weigh 15g of the polycrystalline mullite fiber obtained in step (1), and slowly add the fiber into the slurry ...

Embodiment 2

[0048] In this embodiment, a method for preparing a mullite fiber porous heat-insulating tile is specifically carried out according to the following steps:

[0049] (1) The polycrystalline mullite fiber is sheared by a fiber pulverizer, and the shearing time is 6 minutes to obtain a chopped mullite fiber with a length of 500 μm;

[0050] (2) acrylamide (AM), tert-butanol (TBA) and methylenebisacrylamide (MBAM) according to acrylamide (AM): tert-butanol (TBA): methylenebisacrylamide (MBAM) = The mass ratio of 20:80:2 is mixed evenly to obtain a premixed solution;

[0051] (3) Weigh 80g of the premixed solution obtained in step (2), add 3.2g of Si powder, and stir with an electromagnetic stirrer until the silicon powder is completely dispersed in the premixed solution to obtain a premixed slurry;

[0052] (4) Put the slurry obtained in the step (3) into a ball mill and carry out ball milling for 8h to obtain a more evenly dispersed ceramic slurry;

[0053] (5) Weigh 16g of the...

Embodiment 3

[0057] In this embodiment, a method for preparing a mullite fiber porous heat-insulating tile is specifically carried out according to the following steps:

[0058] (1) The polycrystalline mullite fiber is sheared by a fiber pulverizer, and the shearing time is 10 minutes to obtain a chopped mullite fiber with a length of 400 μm;

[0059] (2) acrylamide (AM), tert-butanol (TBA) and methylenebisacrylamide (MBAM) according to acrylamide (AM): tert-butanol (TBA): methylenebisacrylamide (MBAM) = The mass ratio of 20:60:2 is mixed evenly to obtain a premixed solution;

[0060] (3) Take 90g of the premixed solution obtained in step (2), add 5.4g of Si powder, and stir with an electromagnetic stirrer until the silicon powder is completely dispersed in the premixed solution to obtain a premixed slurry;

[0061] (4) Put the slurry obtained in the step (3) into a ball mill and carry out ball milling for 8h to obtain a more evenly dispersed ceramic slurry;

[0062] (5) Weigh 27g of the...

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
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of high temperature-resisting mullite fiber porous heat insulation tile. The preparation method comprises the following steps of shearing ceramic fiber by utilizing a fiber pulverizer, thus obtaining chopped fiber; mixing acrylamide, tert butyl alcohol and methylene bisacrylamide, thus obtaining a premixed solution; adding silicon powder, thus obtaining premixed slurry; putting the premixed slurry in a ball mill for carrying out ball milling, thus obtaining uniformly dispersed ceramic slurry; adding mullite fiber in the ceramic slurry, and stirring by using an electromagnetic stirrer, thus obtaining fiber slurry; adding a catalyst and an initiator in the fiber slurry, and pouring the fiber slurry in a mold for curing; drying the mold and a rough body, demolding, thus obtaining a dried rough body; putting the dried rough body in a high-temperature furnace for debonding and sintering, thus obtaining a ceramic fiber porous heat insulation tile. According to the preparation method of the high temperature-resisting mullite fiber porous heat insulation tile, disclosed by the invention, the technical problems that the temperature resistance of a binder of a mullite fiber heat insulation tile is not high enough, and fiber cannot be well coated are solved; the prepared mullite fiber heat insulation tile can bear 1500 DEG C of high temperature and can be used for hypersonic speed aerospace crafts.

Description

technical field [0001] The invention relates to a preparation method of a heat-resistant mullite fiber porous heat-insulating tile. Background technique [0002] In the field of aerospace, aerospace aircraft with high Mach number, long endurance, and the ability to repeatedly travel to and from the atmosphere have become the focus of military competition among various countries, and the resulting problem of high temperature and heat insulation of aircraft has become one of the main problems restricting its development . Mullite fiber rigid porous material has the advantages of light weight, heat insulation, high temperature resistance, oxidation resistance and corrosion resistance, and plays a vital role in the heat insulation layer of various aerospace vehicles. [0003] At present, traditional ablative thermal protection materials are difficult to meet the requirements of reusability, and the temperature resistance of oxidation-resistant silica fiber porous materials (up ...

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 Applications(China)
IPC IPC(8): C04B32/00C04B14/46C04B14/06
CPCC04B32/005C04B2201/20C04B2201/30C04B2201/50C04B14/4656C04B14/06
Inventor 郭安然刘瑞明董学刘家臣刘洁
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com