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Lubricating organic-silicon anti-icing coating prepared by ''one-step method'' and preparation method of coating

A lubricity, anti-icing technology, applied in the coating and other directions, to achieve the effects of reduced adhesion, low shear modulus, and excellent flexibility

Inactive Publication Date: 2018-09-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Lubricating organic-silicon anti-icing coating prepared by ''one-step method'' and preparation method of coating
  • Lubricating organic-silicon anti-icing coating prepared by ''one-step method'' and preparation method of coating
  • Lubricating organic-silicon anti-icing coating prepared by ''one-step method'' and preparation method of coating

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 2.0g main chain PDMS-PMHS (molecular weight is 120000), 2.0g branched chain PDMS-V (molecular weight is 3750), 2.0g cross-linking agent V-PDMS-V (molecular weight is 12500), 1.5g did not participate in the cross-linking reaction The additive PDMS (molecular weight is 17500) and 42.5g xylenes are formulated into the solution that solute mass percentage content is 15wt%, add the xylene solution (solution mass fraction is 5.0wt%) of the Karstedt's catalyst of 100 μ L, ultrasonic stirring 1.5h with Mix evenly to make the solution uniform and transparent; take an appropriate amount of the solution and drop-coat it on the surface of the substrate, and let it dry for 2.5 hours at room temperature, and then put it in a blast drying oven at 110°C for 4.5 hours to cross-link and solidify to form a film, " One-step method" to prepare lubricating silicone anti-icing coating.

[0043] The measured static water contact angle of the coating is 100°, and the ice shear strength is 11.6k...

Embodiment 2

[0045] 2.0g main chain PDMS-PMHS (molecular weight is 120000), 2.0g branched chain PDMS-V (molecular weight is 7000), 1.0g crosslinking agent V-PDMS-V (molecular weight is 20000), 1.0g did not participate in the crosslinking reaction The additive PDMS (molecular weight is 15000) and 4.0g chloroform are formulated into the solution that solute mass percentage content is 60wt%, add the chloroform solution (solution mass fraction is 2.5wt%) of Karstedt's catalyst of 46 μ L, ultrasonic stirring 2h Mix evenly to make the solution uniform and transparent; take an appropriate amount of solution and spray it on the surface of the substrate, let it dry at room temperature for 1 hour, and then put it into a blast drying oven at 85°C for 3 hours to cross-link and solidify to form a film, "one-step method "Preparation of lubricious silicone anti-icing coatings.

[0046] The measured static water contact angle of the coating is 97°, and the ice shear strength is 8.4kPa.

Embodiment 3

[0048] 6.0g main chain PDMS-PMHS (molecular weight is 8000), 6.0g branched chain PDMS-V (molecular weight is 500), 3.5g crosslinking agent V-PDMS-V (molecular weight is 5000), 3.25g did not participate in crosslinking reaction The additive PDMS (molecular weight is 532) and 31.25g tetrahydrofuran are prepared into a solution with a solute mass percentage of 37.5wt%, and 200 μL of Karstedt's catalyst tetrahydrofuran solution (solution mass fraction is 3.0wt%) is added, and ultrasonically stirred for 1 h to mix uniformly , to make the solution uniform and transparent; take an appropriate amount of the solution and spin-coat it on the surface of the substrate, and let it dry for 3 hours at room temperature, and then put it into a blast drying oven at 60°C for 3 hours to cross-link and solidify to form a film, "one-step" preparation Lubricious silicone anti-icing coating.

[0049] The measured static water contact angle of the coating is 100°, and the ice shear strength is 14.8kPa...

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Abstract

The invention discloses a lubricating organic-silicon anti-icing coating and a preparation method thereof. The organic-silicon anti-icing coating is prepared by the following steps: taking hydrogen-containing polydimethylsiloxane as a main chain, single-terminal vinyl polydimethylsiloxane as a branched chain, double-terminal vinyl polydimethyl iloxane as a cross-linking agent, and polydimethylsiloxane which does not participated in a crosslinking reaction as an additive, and carrying out a ''one-step method'' to prepare the lubricating organic-silicon anti-icing coating. The branched chain formed by the single-terminal vinyl polydimethylsiloxane provides a storage space for the oil-lubricating polydimethylsiloxane which does not participated in the reaction; and under a low temperature, the unreacted polydimethylsiloxane migrates to the surface to reduce the ice adhesion strength of the coating. The ice shearing strength of the lubricating organic-silicon anti-icing coating prepared bythe ''one-step method'' can be low to 4.5 kPa. The coating provided by the invention has the advantages of easily available materials, simple and convenient preparation method and controllable condition, and has a great application prospect in solving the problem of preventing ice coverage on the surfaces of infrastructures.

Description

technical field [0001] The invention relates to a "one-step" lubricating silicone anti-icing coating and a preparation method thereof, belonging to the field of organic silicon coating preparation and application of hydrophobic anti-icing coating materials. Background technique [0002] The adhesion and accumulation of ice on the surface of infrastructure such as airplanes, cars, ships and wind turbines will not only cause energy waste, but also may lead to serious traffic accidents and major disasters. Traditional active deicing methods such as mechanical deicing consume a lot of energy, and spraying antifreeze will pollute the environment. Therefore, efficient and low-cost passive anti-icing coating methods have attracted more and more attention and research. By coating the surface of the substrate with an anti-icing functional coating, the formation of ice is inhibited or slowed down, and the adhesion of ice to the surface of the substrate is reduced. Anti-icing coatings...

Claims

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Application Information

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IPC IPC(8): C09D183/05C09D183/07C09D7/65
CPCC08L2205/025C08L2205/035C09D7/65C09D183/04C08L83/04
Inventor 袁晓燕高淑辉彭杰刘波李晓晖朱孔营
Owner TIANJIN UNIV
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