Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high temperature resistant nano heat insulation material and preparation method thereof

A nano-insulation material and high-temperature-resistant technology, which is applied in manufacturing tools, ceramic molding machines, etc., can solve problems such as insufficient temperature resistance of nano-insulation materials, achieve high-temperature structural stability, inhibit high-temperature sintering growth, and The effect of thermal performance improvement

Active Publication Date: 2022-01-28
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of insufficient temperature resistance of nano-insulation materials in the prior art, the present invention provides a high-temperature-resistant nano-insulation material and its preparation method

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] In a first aspect, the present invention provides a method for preparing a high-temperature-resistant nano-insulation material, the method comprising the following steps:

[0028] (1) Mixing the nanopowder and the powder surface modifier evenly, so that the powder surface modifier is uniformly coated on the surface of the nanopowder to obtain an in-situ modified powder; the powder surface modification The agent is selected from one or more of silica sol, aluminum sol, silica-alumina sol, zirconium sol, and silica-zirconium sol; in the present invention, the nanopowder is also recorded as nanoparticles or nanopowder particles; The invention has no special requirements for silica sol, aluminum sol, silica-alumina sol, zirconium sol, and silica-zirconium sol, and the existing silica sol, alumina sol, silica-alumina sol, zirconium sol, and silica-zirconium sol can be used; in the present invention , the particle size of the powder surface modifier can be, for example, 0.5-1...

Embodiment 1

[0055] Example 1: Preparation of nano-silica powder / aluminum sol surface modifier / sucrose modification / mullite fiber high temperature resistant nano-insulation material

[0056] S1. According to the ratio of nano silica powder: aluminum sol surface modifier: sucrose solution: mullite fiber: silicon carbide = 500: 10: 10: 100: 50 (mass ratio), the materials were weighed respectively and set aside; The nano-silica powder used is a powder with a particle size between 1 and 50nm, and the aluminum sol surface modifier uses an aluminum sol with a colloidal particle size between 0.5 and 10nm, and the concentration of the aluminum sol is 2.5 wt%, the mullite fiber used is a mullite fiber with a diameter between 1 and 10um; the concentration of the sucrose solution is 5wt%;

[0057] S2. The aluminum sol surface modifier is gradually added to the container containing nano-silica powder under the action of mechanical fusion equipment, and mixed well, so that the aluminum sol surface modi...

Embodiment 2

[0065] Example 2: Preparation of nano-alumina powder / zirconium sol surface modifier / sucrose modification / mullite fiber high temperature resistant nano-insulation material

[0066] S1. According to the ratio of nano-alumina powder: zirconium sol surface modifier: sucrose solution: mullite fiber: silicon carbide = 500:30:15:80:60 (mass ratio), weigh the materials respectively and set aside; The nano-alumina powder is a powder with a particle size between 1 and 50nm, and the zirconium sol surface modifier is a zirconium sol with a colloidal particle size between 0.5 and 10nm, and the concentration of the zirconium sol is 2.5wt% , the mullite fiber used is a mullite fiber with a diameter between 1 and 10um; the concentration of the sucrose solution is 5wt%;

[0067] S2. The zirconium sol surface modifier is gradually added to the container containing the nano-alumina powder under the action of the mechanical fusion equipment, and fully mixed evenly, so that the zirconium sol surfa...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-temperature-resistant nano heat insulation material and a preparation method thereof. The method is as follows: uniformly mixing the nano powder and the powder surface modifier, coating the powder surface modifier on the surface of the nano powder to obtain in-situ modified powder; the powder surface modifier is selected from silica sol One or more of , aluminum sol, silica-alumina sol, zirconium sol, and silica-zirconium sol; compound the powder modified in situ with an organic polymer, and obtain a powder modified with a carbon layer by vacuum cracking; the organic polymer is Sucrose solution and / or polymethacrylamide solution; uniformly mixing powder modified by carbon layer, inorganic fibers and additives to obtain a mixture; spreading and molding the mixture to obtain a high-temperature resistant nano-insulation material. The method of the present invention covers the surface of nano-particles by in-situ modification to form a barrier between the nanoparticles, and the surface is cut off by an inert carbon layer, which increases the difficulty of sintering and growing up the skeleton structure at high temperature, and realizes the nano-insulation materials. The improvement of temperature.

Description

technical field [0001] The invention relates to the technical field of functional composite materials, in particular to a high-temperature-resistant nano-heat insulation material and a preparation method thereof. Background technique [0002] At present, nano-insulation materials are mainly composed of additives such as nanoparticles, inorganic fibers, and opacifying agents. There are steps such as mixing of fiber / nano powder particles, molding of the mixture, and the like. Although there are fewer active sites on the surface of the nanoparticles that make up the skeleton of the thermal insulation material, nanoparticles with smaller particle sizes (nanoparticles with a primary particle size of several nanometers to tens of nanometers) are prone to sintering and growth at high temperatures, resulting in a three-dimensional structure. The network skeleton collapses and destroys, the material performance drops significantly, and the thermal insulation performance will also dr...

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): C04B35/66C04B35/14C04B35/10B28B3/02B28B1/52B28B1/54
CPCC04B35/66C04B35/14C04B35/10B28B3/02B28B1/52B28B1/54C04B2235/422C04B2235/5228C04B2235/5436
Inventor 张凡安煊熜李文静杨洁颖张恩爽张昊赵英民孔德隆高宇智
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com