High-temperature-treated high-drawing-resistance aerogel composite material and preparation method thereof

A composite material and high-temperature treatment technology, applied in the field of aerogel, can solve the problems of low tensile strength and can not meet the technical specification requirements in the field of building insulation, and achieve the effect of improving the tensile strength

Pending Publication Date: 2021-09-17
浙江圣润纳米科技有限公司
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, airgel materials are generally made of glass fiber needle felt as the base material composited with silica airgel, which has a certain tensile and compressive strength, but the tensile strength is low (generally less than 0.1MPa), which cannot meet the requirements Technical specification requirements in the field of building insulation
[0003] At present, the pull-out strength of the main insulation materials used is low. The overall pull-out strength of the insulation system is enhanced by adding glass fiber mesh cloth and insulation nails during the construction process, and then applying mortar.

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

[0021] An embodiment of the present invention provides a high-temperature-treated high-drawing-resistant airgel composite material and a preparation method thereof, comprising the following steps:

[0022] Step 1: using the fiber composition as the core material, treating the core material at a high temperature of 700-1000° C. and a pressure of 0.001-10 MPa for 1-600 minutes to obtain a high-stretch core material with three-dimensional interweaving and curing with a smooth surface;

[0023] Step 2: Using the three-dimensional braided fiber obtained in step one as a reinforcing base material, soaking the three-dimensional braided fiber in aerosol, gelling, aging, modifying, and drying to obtain a high-drawing-resistant airgel composite material;

[0024] Or the fiber composition is used as a reinforced base material to obtain an airgel composite material through gelation, aging, modification, and drying, and then the airgel composite material is treated at a high temperature of ...

Embodiment 1

[0032] Take a glass fiber needle felt with a thickness of 10mm, and treat it at 750°C and a pressure of 0.05MPa for 30 minutes to form a three-dimensional interwoven and cured high-stretch core material with a smooth surface. Weigh 80 g of sodium water glass with a modulus of 3.3, add 60 g of pure water and stir evenly to obtain diluted water glass. Take by weighing 20 g of sulfuric acid with a concentration of 40% wt, and then add diluted water glass to the sulfuric acid while stirring until the pH value is 3. Continue adding 300 g of 95% wt ethanol while stirring. The precipitate in the sol was removed with a centrifugal filter to obtain a transparent and clear silica sol. Add ammonia water with a concentration of 1% wt to the silica sol to adjust the pH to 4.1, and then soak the silica sol in the aforementioned high-stretch-resistant core material. After about 50 minutes, it gels, and it is aged at room temperature for 5 hours. Put the aged gel into a mixture of 40%wt sul...

Embodiment 2

[0034] Spread a layer of basalt fiber loose cotton with a thickness of 50mm, and treat it at 900°C for 60 minutes under a pressure of 0.01MPa to form a three-dimensional interwoven and cured high-strength core material with a smooth surface. Weigh 200 g of silica sol with a pH value of 3 and a concentration of 25%, 100 g of an aluminum sol with a pH value of 2.5 and a concentration of 20%, and add 600 g of water for dilution to obtain a mixed silica-alumina sol. Add ammonia water with a concentration of 2%wt to the silica-alumina sol dropwise, adjust the pH to 4.5, pour it into a box covered with a high-stretch-resistant core material for 25 minutes, then gel, and let it stand for aging for 15 hours. Pour 500ml of trimethylchlorosilane onto the aged gel for hydrophobic modification. After 6 hours, the modification was completed, and the gel was dried under normal pressure at 120°C for 2 hours to obtain a high-stretching-resistant airgel composite material with a thermal conduc...

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 high-temperature-treated high-drawing-resistance aerogel composite material and a preparation method thereof, and relates to the field of aerogels. The preparation method comprises the following steps: 1, using a fiber composition as a core material, and treating the core material at a high temperature of 700-1000 DEG C and a pressure of 0.001-10 MPa for 1-600 minutes to obtain a three-dimensional interwoven cured high-drawing-resistance core material with a smooth surface; and 2, soaking the high-drawing-resistance core material obtained in the step 1 in sol, gelling, aging, modifying, and drying to obtain the high-drawing-resistance aerogel composite material, or by using the fiber composition as a reinforced base material, carrying out gelling, aging, modifying and drying to obtain anaerogel composite material, and treating the aerogel composite material for 1-600 minutes at a high temperature of 700-1000 DEG C and under a pressure of 0.001-10 MPa to form the final high-drawing-resistance aerogel composite material. According to the method, the anti-drawing strength of the aerogel material is remarkably improved, and the anti-drawing strength of the aerogel composite material is improved to 0.5 MPa from 0.08 MPa.

Description

technical field [0001] The invention relates to the technical field of airgel, in particular to a high-temperature-treated high-drawing-resistant airgel composite material and a preparation method thereof. Background technique [0002] Building wall insulation is a potential application market for airgel materials. When wall insulation materials are constructed, the outer layer of the insulation material often has a decorative layer, etc., and the insulation material itself needs to have a high tensile strength. At present, airgel materials are generally made of glass fiber needle felt as the base material composited with silica airgel, which has a certain tensile and compressive strength, but the tensile strength is low (generally less than 0.1MPa), which cannot meet the requirements Technical specification requirements in the field of building insulation. [0003] At present, the tensile strength of the main thermal insulation materials used is low, and the overall tensil...

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): C04B30/02C04B38/04C04B38/08C04B111/40
CPCC04B30/02C04B2201/50C04B2201/32C04B2111/40C04B14/42C04B14/064C04B24/42C04B38/045C04B14/46C04B14/302C04B14/386C04B38/08
Inventor 金承黎
Owner 浙江圣润纳米科技有限公司
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