Temperature-sensitive color-changing coating

A temperature-sensitive discoloration and coating technology, applied in the field of building exterior wall materials, can solve the problems of difficult realization of discoloration, inability to use large-scale construction industry, high raw material cost, and achieve the effect of maintaining comfortable temperature, reducing use and saving energy.

Inactive Publication Date: 2012-07-18
武汉康桥伟业高新科技有限公司
View PDF3 Cites 25 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, among temperature-changing paints, high-temperature discoloration is relatively easy to achieve, while low-temperature discoloration, especially in the temperature r

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

[0020] Example 1

[0021] High molecular polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer, its molecular weight M n about 1x10 5 g / mol, 100 parts;

[0022] Film former, 8 parts;

[0023] thickener, 1 part;

[0024] Dispersant, 2 parts;

[0025] Defoamer, 1 part;

[0026] Solvent water, 200 parts.

[0027] The above materials were dissolved and stirred for 90 minutes.

[0028] Polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer (PEO-PPO-PEO or EOn-POm-EOn) is a covalent bond that links together hydrophilic PEO segments and hydrophobic PPO segments The polymer compound is used as a polyoxyethylene-containing block copolymer (temperature-sensitive polymer) in this embodiment, which forms an emulsion or solution in a certain solution under temperature control. In other embodiments, polyoxyethylene-polyoxybutylene-polyoxyethylene block copolymers or polyoxyethylene-polyoxypentene-polyoxyethylene block copolymers may also be used. In the example...

Example Embodiment

[0028] Polyoxyethylene-polyoxypropylene-polyoxyethylene block copolymer (PEO-PPO-PEO or EOn-POm-EOn) is a covalent bond that links together hydrophilic PEO segments and hydrophobic PPO segments The polymer compound is used as a polyoxyethylene-containing block copolymer (temperature-sensitive polymer) in this embodiment, which forms an emulsion or solution in a certain solution under temperature control. In other embodiments, polyoxyethylene-polyoxybutylene-polyoxyethylene block copolymers or polyoxyethylene-polyoxypentene-polyoxyethylene block copolymers may also be used. In the example, the discoloration temperature of the paint is about 50°C. When the temperature is above 50°C, the paint is white; when the temperature is below 50°C, the paint is colorless and transparent. At a temperature scan rate of 0.5°C / min to reach 50°C, the discoloration time is about 2 minutes. After repeated discoloration 500 times, its discoloration performance is still stable. Example 2

[0029...

Example Embodiment

[0038] Example 3

[0039] High molecular poly-N,N-diethylacrylamide, its molecular weight M n about 1x10 5 g / mol, 100 parts;

[0040] Film former, 8 parts;

[0041] thickener, 1 part;

[0042] Dispersant, 2 parts;

[0043] Defoamer, 1 part;

[0044] Solvent water, 200 parts.

[0045] The above materials were dissolved and stirred for 90 minutes.

[0046] In the example, the discoloration temperature of the paint is about 38°C. When the temperature is above 38°C, the paint is white; when the temperature is below 38°C, the paint is colorless and transparent. When reaching 38°C with a temperature scan rate of 0.5°C / min, the discoloration time is about 1 minute. After repeated discoloration 500 times, its discoloration performance is still stable.

[0047] In this embodiment, the polymer poly-N,N-diethylacrylamide is used as a polyacrylamide-based polymer (temperature-sensitive polymer), which forms an emulsion or a solution in a certain solution under temperature control...

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 embodiment of the invention provides a temperature-sensitive color-changing coating, which comprises following components by weight part ratio: 20 to 160 parts of temperature-sensitive polymers, 2 to 20 parts of film forming agents, 0.2 to 5 parts of thickening agents, 0.5 to 10 parts of dispersing agents, 0.1 to 5 parts of defoaming agents and 100 to 500 parts of solvents. Through the adoption of the temperature-sensitive color-changing coating provided by the invention, the color of an outer wall of a building can change at a certain critical temperature; when the actual temperature is higher than the critical temperature, the coating is white and can reflect 80 percent of heat; when the actual temperature is higher than the critical temperature, the coating is colorless and the color of the outer wall material self is exposed; and if the color of the outer wall self is black, the best sun heat absorbing effect is achieved and 80 percent of the sun heat can be absorbed, so that the effects of indoor comfortable temperature maintenance, reduction of the use of air conditioners and heating equipment, and energy source conservation are achieved.

Description

technical field [0001] The invention relates to the technical field of building exterior wall materials, in particular to a temperature-sensitive color-changing paint. Background technique [0002] Whenever the hot summer comes, people always like to choose to wear white clothes to go out. Not only do humans need to wear light colors to stay cool in the sun, buildings also need white roofs to avoid exposure to the sun. Many people may not realize that the roofs and facades of buildings are inadvertently contributing to soaring temperatures. [0003] Research data shows that the reflectivity of traditional black roofs to sunlight is only 20%, while the sunlight reflected by white roofs is as high as 90%. If the outside temperature is 32°C, the surface temperature of the black roof can be as high as 82°C, and the heat it absorbs can heat the room to around 46°C. In the same situation, the surface of the white roof is kept at a constant temperature of 38°C, which keeps the i...

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): C09D171/02C09D167/00C09D133/24C09D5/26
Inventor 范犇吴天骄
Owner 武汉康桥伟业高新科技有限公司
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