Nanometer Al2O3 composite aerosil thermal-insulation heat-preserving paint and preparation method thereof

A composite silica, thermal insulation technology, applied in the direction of epoxy resin coatings, coatings, etc., can solve the problems of large interface thermal resistance, performance degradation of composite materials, poor compatibility, etc., to improve thermal insulation performance and high temperature resistance Sex, solve the effect of water absorption and fragility

Inactive Publication Date: 2015-11-11
DANGTU COUNTY KEHUI TRADING
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Overhydrophobic silica airgel microspheres are a good thermal insulation material, but due to the large number of non-polar groups on its surface, when it is mixed with a water-based polymer system, its compatibility is poor and the interface thermal resis

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

Example Embodiment

[0016] A kind of nano Al 2 O 3 The composite silica aerogel thermal insulation coating is made of the following parts by weight (kg) of raw materials: ethyl orthosilicate 33, proper amount of hydrochloric acid, proper amount of ammonia, proper amount of ethanol, proper amount of deionized water, and trimethylchlorosilane 4.5 , N-butyl titanate 0.3, nano Al 2 O 3 0.7, E-12 epoxy resin 63, xylene 13, maleic anhydride 7.4;

[0017] The nano Al 2 O 3 The preparation method of composite silica aerogel thermal insulation coating includes the following steps:

[0018] (1) Add ethyl orthosilicate: ethanol: water at a molar ratio of 1:10:9 to the container in sequence, add hydrochloric acid alcohol solution under stirring at 390 rpm, adjust the pH to 2, and stir for 11 hours. Join Nano Al 2 O 3 , Mix well, disperse ultrasonically for 5 minutes, then add ammonia water alcohol solution, adjust the PH value to 8, continue to stir for 1 hour, pour it into the mold, seal and stand at room temper...

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

No PUM Login to view more

Abstract

The invention provides a nanometer Al2O3 composite aerosil thermal-insulation heat-preserving paint. The paint is prepared from the following raw materials by weight: 32 to 35 parts of ethyl orthosilicate, a proper amount of hydrochloric acid, a proper amount of ammonia water, a proper amount of ethanol, a proper amount of deionized water, 4 to 5 parts of trimethylchlorosilane, 0.3 to 0.4 part of tetrabutyl titanate, 0.6 to 0.9 part of nanometer Al2O3, 60 to 65 parts of epoxy resin E-12, 12 to 14 parts of xylene and 7 to 7.5 parts of maleic anhydride. According to the invention, nanometer Al2O3 and silica are compounded to prepare aerogel, so the aerogel has improved high temperature resistance, hardness, dimensional stability and breaking tenacity, the water-absorbing quality of the aerogel is enhanced, the aerogel hardly ruptures, and the disadvantage that the aerogel easily breaks in the case of water absorption; thus, the paint has improved heat-preserving performance and is worth large-scale popularization and application.

Description

Technical field [0001] The invention relates to the field of thermal insulation coatings, in particular to a nano Al 2 O 3 Composite silica aerogel thermal insulation coating and preparation method thereof. Background technique [0002] Silica aerogel is a kind of porous solid material with nano-pores. It has the structural characteristics of low density and high porosity, and has super thermal insulation performance. The silica aerogel microspheres are combined with the film-forming material for coatings to form coatings with super thermal insulation properties. [0003] Most of the current silica aerogels are prepared by the sol-gel method by hydrolyzing silicon sources such as ethyl orthosilicate. The resulting silica aerogels are very easy to absorb moisture and crack when exposed to water, resulting in a nanoporous structure. The damage will affect the performance of the aerogel. Therefore, the silica gel usually needs to be hydrophobically modified during the preparation pro...

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
IPC IPC(8): C09D163/00C09D7/12
Inventor 董良清
Owner DANGTU COUNTY KEHUI TRADING
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