Transparent thermal-insulation coating containing silicon oxide aerogel and preparation method of coating

A heat insulation and silicon oxide-containing technology, which is applied in fireproof coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of loss of airgel heat insulation performance, low strength, loss of nanoporous structure, etc., to achieve High visible light transmittance, excellent coating performance, and simple preparation process

Active Publication Date: 2017-10-20
NANJING WEICAI NEW ENERGY TECH
View PDF2 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the extremely low solid content and density of airgel, its skeleton is slender and its strength is low.
Moreover, because there are many nanopores on the surface of the airgel, the low-molecular-weight liquid substances in the coating system can

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
  • Transparent thermal-insulation coating containing silicon oxide aerogel and preparation method of coating
  • Transparent thermal-insulation coating containing silicon oxide aerogel and preparation method of coating
  • Transparent thermal-insulation coating containing silicon oxide aerogel and preparation method of coating

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] A method for preparing a transparent thermal insulation coating containing silica aerogel, including the following steps:

[0034] (1) Modification of aerogel powder;

[0035] (2) Surface coating the aerogel powder of step (1);

[0036] (3) Mix the aerogel powder of step (2) with the water-based transparent resin and stir.

[0037] Thus, through the above preparation process, a transparent thermal insulation coating containing silica aerogel with a thermal conductivity of 0.02 to 0.06 W / m·K and a visible light transmittance of 65% to 95% can be prepared. The coating has excellent performance. The price is low, the coating preparation process is simple, practical, and suitable for industrial production.

[0038] In this embodiment, the step (1) includes a hydrophobic modification step; the hydrophobic modification is the hydrophobic modification of the aerogel powder in a closed hydrophobic modifier gas phase environment; the hydrophobic modifier It is trimethylchlorosilane, hex...

Example Embodiment

[0051] Example 1

[0052] Use the following steps to prepare a transparent thermal insulation coating containing silica aerogel:

[0053] (1) Use a contact angle measuring instrument to detect the SiO to be processed 2 The contact angle between the surface of the aerogel powder and water, the test result is 31°, and then the SiO with a particle size of 22μm 2 The aerogel powder is placed in a vacuum heating furnace, and the weighed hexamethyldisilazane is placed in a vacuum heating furnace with a container, heated and gasified, and hydrophobically modified for 2.5 hours to obtain hydrophobic SiO 2 Aerogel powder, use contact angle measuring instrument to detect hydrophobic SiO 2 The contact angle between the surface of the aerogel powder and water, the test result is 150°;

[0054] (2) At room temperature, weigh n-hexane, glycerin and deionized water at a mass ratio of 1:0.5:15, mix them evenly, and prepare a surface hydrophilic modification solution;

[0055] (3) Press hydrophobic SiO...

Example Embodiment

[0061] Example 2

[0062] Use the following steps to prepare a transparent thermal insulation coating containing silica aerogel:

[0063] (1) Use a contact angle measuring instrument to detect the SiO to be processed 2 The contact angle between the surface of the aerogel powder and water is 31°. Then the SiO with a particle size of 88μm 2 The aerogel powder is placed in a vacuum heating furnace, and the weighed trimethylchlorosilane is placed in a vacuum heating furnace with a container, heated and gasified, and hydrophobically modified for 1.5 hours to obtain hydrophobic SiO 2 Aerogel powder, use contact angle measuring instrument to detect hydrophobic SiO 2 The contact angle between the surface of the aerogel powder and water, the test result is 150°;

[0064] (2) At room temperature, weigh n-hexane, sodium alkylbenzene sulfonate and deionized water at a mass ratio of 1:0.5:1000, mix them evenly, and prepare a surface hydrophilic modification solution;

[0065] (3) Press hydrophobic ...

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
Thermal conductivityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a transparent thermal-insulation coating containing silicon oxide aerogel and a preparation method of the coating. The transparent thermal-insulation coating containing silicon oxide aerogel is characterized by mainly comprising transparent resin and aerogel powder. The preparation method of the transparent thermal-insulation coating containing silicon oxide aerogel comprises the steps as follows: (1) modification of aerogel powder; (2) surface coating of the aerogel powder in step (1); (3) mixing and stirring of the aerogel powder in step (2) and waterborne transparent resin. The transparent thermal-insulation coating containing silicon oxide aerogel has high visible light transmittance and low heat conduction coefficient, the preparation process of the coating is simple, and the coating is practical, excellent in performance, low in price and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of chemical coatings, in particular to a transparent thermal insulation coating containing silicon oxide airgel and a preparation method thereof. Background technique [0002] Energy conservation is a long-term strategic policy for my country's economic development. In cold regions such as northern my country, heat loss through building glass accounts for more than 50% of heating energy consumption. For cold regions such as northern my country, the principle of design and use of architectural glass should be to allow solar heat radiation to fully enter the interior of the building through glass windows in winter, while minimizing heat loss through glass windows. The traditional solution is to use insulating glass, metal-coated heat-reflecting glass, low-emissivity coated glass, and various heat-reflecting films to achieve heat insulation. However, these solutions have problems such as unsatisfactory light transmitta...

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): C09D133/00C09D175/04C09D183/04C09D7/12C09D5/18C09C1/28C09C3/10C09C3/12C09C3/08
CPCC08K3/36C08K7/26C08K9/04C08K9/06C08K9/10C09D5/18C09D133/00C09D175/04C09D183/04
Inventor 卢锋
Owner NANJING WEICAI NEW ENERGY 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