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A kind of flexible lubricating coating and its preparation method and application

A lubricating coating and flexible technology, applied in the field of flexible lubricating coating and its preparation, can solve the problems of difficult large-scale preparation, complex methods, high technical requirements, etc., and achieve durable and stable anti-icing performance, low ice adhesion strength, Not easy to lose effect

Active Publication Date: 2021-04-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation methods of superhydrophobic surfaces that have been studied more, such as sol-gel method, chemical corrosion method, chemical vapor deposition, photolithography, template method, etc., have problems such as complex methods, high technical requirements and difficulty in large-scale preparation. The preparation of superhydrophobic surface by bath method can solve the above problems well, but the microstructure of superhydrophobic surface is easily damaged, which affects the durability of anti-icing performance; and some studies have shown that the anti-icing performance of superhydrophobic surface under high humidity conditions not ideal

Method used

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  • A kind of flexible lubricating coating and its preparation method and application
  • A kind of flexible lubricating coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of tetrafluoropropyl norbornene carboxylic acid, the preparation method is: first tetrafluoropropanol 4.62g, 5-norbornene-2-carboxylic acid 5.53g, trimethylacetic anhydride 7.45g and 4-methylaminopyridine 42.76mg was dissolved in 50ml tetrahydrofuran, reacted at 50°C for 24 hours, and dissolved in saturated NaHCO 3 solution, saturated NaCl solution, washed with water, adding an appropriate amount of anhydrous MgSO 4 Dry, and then rotary evaporate to obtain light yellow viscous liquid.

[0029] Prepare tetrafluoropropyl norbornene carboxylate polymer. The preparation method is: first dissolve 3.03 g of tetrafluoropropyl norbornene carboxylate in 50 ml of dichloromethane in an ice bath, blow nitrogen to deoxygenate, and Grubbs second-generation catalyst (Grubbs 2 nd ) 50.94 mg dissolved in dichloromethane was injected into the reaction vial through a syringe, and the nitrogen gas was continued for 30 minutes. Evaporate to obtain the polymer.

[0030] Prepa...

Embodiment 2

[0033] To prepare octafluoropentyl norbornene carboxylic acid, the preparation method is: first, 8.12 g of octafluoropentyl ester, 5.53 g of 5-norbornene-2-carboxylic acid, 7.45 g of trimethylacetic anhydride and 4-methylaminopyridine 42.76mg was dissolved in 50ml tetrahydrofuran, reacted at 60°C for 18 hours, and was dissolved in saturated NaHCO 3 solution, saturated NaCl solution, washed with water, adding an appropriate amount of anhydrous MgSO 4 Dry, and then rotary evaporate to obtain light yellow viscous liquid.

[0034] Preparation of octafluoropentyl norbornene carboxylate polymer, the preparation method is as follows: first, 3.15 g of octafluoropentyl norbornene carboxylate is dissolved in 50 ml of dichloromethane in an ice bath, nitrogen gas is used to remove oxygen, and then the Grubbs second-generation catalyst (Grubbs 2 nd ) 37.99 mg dissolved in dichloromethane was injected into the reaction vial through a syringe, and the nitrogen gas was continued for 30 minu...

Embodiment 3

[0038] Preparation of cyclooctene perfluorooctyl ethyl ester: first, 6.50 g of 2-perfluorooctyl ethyl alcohol, 3.20 g of cyclooctene-4-mercapto-acetic acid, 2.98 g of trimethylacetic anhydride and 4-methylamino Dissolve 23mg of pyridine in 30ml of tetrahydrofuran, react at 70°C for 12 hours, and dissolve in saturated NaHCO 3 solution, saturated NaCl solution, washed with water, adding an appropriate amount of anhydrous MgSO 4 Dry, and then rotary evaporate to obtain light yellow viscous liquid.

[0039] Prepare the cyclooctene perfluorooctyl ethyl ester polymer, the preparation method is: first dissolve 5.58 g of cyclooctene perfluorooctyl ethyl ester in 50 ml of dichloromethane under ice bath, nitrogen gas deoxygenation, and then Grubbs 2nd generation catalyst (Grubbs 2 nd ) 36.71 mg dissolved in dichloromethane was injected into the reaction vial through a syringe, and the nitrogen gas was continued for 30 minutes. Evaporate to obtain the polymer.

[0040] Preparation of...

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Abstract

The invention provides a preparation method of a flexible lubricating coating. The flexible fluorine-containing / organic silicon molecules are uniformly brushed on the porous surface of a polymer to obtain a lubricating coating. At the same time, the coating prepared by the preparation method is provided. The coating has a super-hydrophobic and super-oleophilic lubricating coating with a porous structure. icing properties. Also provided is the use of the coating as a flexible lubricating coating in an anti-icing coating.

Description

technical field [0001] The invention relates to a flexible lubricating coating, a preparation method and application thereof, and belongs to the field of coating preparation and application. Background technique [0002] The icing phenomenon under low temperature conditions has brought a lot of inconvenience to human society in the fields of transportation, aerospace, electric power, telecommunications, etc., and even caused major safety accidents. At present, the preparation methods of superhydrophobic surfaces that have been studied more, such as sol-gel method, chemical corrosion method, chemical vapor deposition, photolithography, template method, etc., have problems such as complex methods, high technical requirements and difficulty in large-scale preparation. The preparation of superhydrophobic surface by bath method can solve the above problems well, but the microstructure of superhydrophobic surface is easily damaged, which affects the durability of anti-icing perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/36C08J9/28C08L65/00C09D165/00
CPCC08J9/28C08J9/365C08J2365/00C08J2471/00C09D165/00
Inventor 李辉周翠平张晴晴瞿亚茹姚阳光张书香陈铭
Owner UNIV OF JINAN
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