Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of anti-icing coating with low ice adhesion and its preparation method and application

An anti-icing and adhesion technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as loss of lubricating layer, high cost of antifreeze protein preparation, and difficulty in secondary deicing

Active Publication Date: 2019-07-16
INST OF CHEM CHINESE ACAD OF SCI
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the structural ice-phobic surface is often confined to the structure due to the transformation of the Cassie-Wenzel wetting state in a low-temperature and high-humidity environment, which is likely to cause problems such as secondary deicing difficulties; while the lubricating layer perfused with the structure as the base is It is easy to be lost by the deicing carrier belt during use, which is not conducive to the continuous use of materials; the release of organic reagents such as glycols that lower the freezing point may cause harm to the environment; the preparation cost of antifreeze proteins is relatively high; these make the above strategies There is still a long way to go for practical applications

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
  • A kind of anti-icing coating with low ice adhesion and its preparation method and application
  • A kind of anti-icing coating with low ice adhesion and its preparation method and application
  • A kind of anti-icing coating with low ice adhesion and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] As mentioned above, the present invention provides a kind of preparation method of the anti-icing coating of low ice adhesion, in a preferred embodiment of the present invention, the specific preparation method of described anti-icing coating comprises:

[0057] (1) Dissolve a certain ratio (stoichiometric or excess) of prepolymers and cross-linking agents with free chain components (may not be added), or a certain mass of long-chain polymers, mix evenly, and centrifuge at 6000r / min for 10min , evacuating in a vacuum drying oven for 0.5h to remove air bubbles to obtain the anti-icing coating;

[0058] (2) coating the coating in step (1) after removing air bubbles on the surface of the cleaned substrate, leveling it into a film layer with a uniform thickness of 0.01 to 2.5 mm, and curing it by heat (or UV curing) to obtain the described Anti-icing coating.

[0059] In the present invention, the curing temperature is controlled at 25-70°C and the curing time is controlle...

Embodiment 1

[0069] Change the mass ratio of prepolymer and crosslinking agent in Sylgard 184 to reduce the modulus of polymer elastic network and realize low ice adhesion of anti-icing coating. The free chain is an excess of siloxane prepolymer or crosslinking agent.

[0070] Mix the prepolymer and crosslinking agent in Sylgard 184 according to the mass ratio of 5:1, 10:1, 20:1, 30:1, 40:1, 50:1, centrifuge at 6000r / min for 10min, and dry in vacuum Vacuum the box for 30 min to remove air bubbles.

[0071] Use a clean silicon wafer as the substrate, spread it on a petri dish, level it into a coating of about 1.6mm, and cure it at 70°C for 12.5 hours to obtain an anti-icing coating with low ice adhesion.

[0072] When the ambient temperature is -30°C and the ambient humidity is 50%, freeze for 5 hours to test its anti-icing performance.

[0073] The results show that: by figure 1 It can be seen that when the ratio of siloxane prepolymer to crosslinking agent is 10:1, the anti-icing abili...

Embodiment 2

[0075] The temperature and time of crosslinking reaction between siloxane prepolymer and crosslinking agent in Sylgard 184 were changed to adjust the modulus of polymer elastic network, and the effect on low ice adhesion of anti-icing coating was studied. The free chain is an excess of siloxane prepolymer.

[0076] Mix the siloxane prepolymer and cross-linking agent in Sylgard 184 evenly at a mass ratio of 50:1, centrifuge at 6000r / min for 10min, and vacuum in a vacuum oven for 30min to remove air bubbles.

[0077] (1) Use a clean silicon wafer as the base material, spread it in a petri dish, level it into a coating of about 1.6mm, and cure it at 70°C for 1h to 12.5h to obtain an anti-icing coating.

[0078] (2) Use a clean silicon wafer as the substrate, spread it in a petri dish, level it into a coating of about 1.6mm, and cure it at 25°C, 70°C, 80°C, and 150°C for 12.5 hours to obtain an anti-icing coating Floor.

[0079] When the ambient temperature is -30°C and the ambi...

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
modulusaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-ice-adhesion anti-icing coating, and a preparation method and application thereof. The low-modulus polymer elastic network structure is prepared by cure-crosslinking, and the boundary lubrication established by transfer of free chains in the network structure is utilized to achieve the goal of low adhesion. Compared with other anti-icing paints, the coating disclosed by the invention has the characteristics of low-temperature / high-humidity environment resistance, abrasion resistance, environmental protection and the like. The low-ice-adhesion anti-icing coating is a flexible substrate; and according to the JKR adhesion theory on the flexible substrate, the low elastic adhesion of the flexible substrate is implemented by reducing the elastomer modulus and increasing the thickness. Free chains are maintained in the polymer network, and the free chains transfer to the surface to implement boundary lubrication, so that the ice can easily depart from the substrate surface under the action of gravity or wind; and thus, the low-ice-adhesion anti-icing coating has great application value in the field of anti-icing. The preparation method is simple, is easy to operate and low in cost, and is green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of anti-icing materials, and in particular relates to an anti-icing coating with low ice adhesion and its preparation method and application. Background technique [0002] Icing is a phenomenon that often occurs in nature, especially in low-temperature and high-humidity areas. The generation of icing will cause huge economic and energy losses to production and life. At present, in addition to the mechanical and thermal deicing with high energy consumption, the main application strategies in the field of anti-icing include: (1) droplet sliding and jumping realized by the surface with hydrophobic structure and low surface energy characteristics; (2) anti-icing (3) Low-adhesion surface achieved by reducing the contact area between ice and substrate; (4) Low-adhesion polymer achieved by water-based lubricating layer coating; (5) low adhesion achieved by oil lubricating layer; (6) melting and deicing achieved by...

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): C09D183/04C09D7/65C09D7/63C09D129/10C09D175/04C09D125/06C09D123/20
CPCC08L2205/025C08L2205/03C08L2312/00C09D7/63C09D7/65C09D123/22C09D125/06C09D129/10C09D175/04C09D183/04C08L83/04C08L23/22
Inventor 王亚玲王健君
Owner INST OF CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com