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Photocuring composition containing perfluoropolyether/alkenyl silicon resin and method for constructing waterproof antifouling coating

A technology of perfluoropolyether acrylate and perfluoropolyether, which is applied in the field of silicone resin coating materials, can solve the problems of hindering popularization and application, and achieve good comprehensive application effects

Active Publication Date: 2022-04-19
HUIZHOU XINHAOYUAN DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, restricted by the European Union's series of bans on C8-perfluoroalkyl acrylate, perfluorooctanoic acid, perfluorooctanoyl fluoride, etc., functional resins and coatings developed based on this series of fluorine-containing substances The promotion and application are greatly hindered, and there is an urgent need for environmentally friendly, high-safety fluoroether and functional resins and coatings developed based on this substance to meet market demand

Method used

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  • Photocuring composition containing perfluoropolyether/alkenyl silicon resin and method for constructing waterproof antifouling coating
  • Photocuring composition containing perfluoropolyether/alkenyl silicon resin and method for constructing waterproof antifouling coating
  • Photocuring composition containing perfluoropolyether/alkenyl silicon resin and method for constructing waterproof antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of perfluoropolyether-silane FESi-1-N-[2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionyl]-γ-aminopropyltriethoxysilane

[0032] In the drying reactor equipped with a thermometer, a reflux condensing tube, and an electric mixer, according to the ratio of FEF: APS volume ratio = 1:1, 0.1mol, 33.20g 2,3,3-tetrafluoro-2-(heptafluoropropoxy) propionyl fluoride and 0.11mol, 8.70g of acid-binding agent pyridine and (FEF +APS) mass 100%, About 55.34g of trifluorotrichloroethane solvent, mechanically stirred and mixed, heated to 40 ° C, and then while stirring, add 0.1mol, 22.14g γ- aminopropyltriethoxysilane KH-550, dropwise added, continue to stir the reaction for 4h; then, cooled to room temperature, washed off the salt with equal amount of deionized water, repeat this operation 2-3 times, and separate the transparent organic phase, that is, N- [2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionyl]- γ-Aminopropyltriethoxysilane (FESi-1) with a silane content of about 5...

Embodiment 2

[0041] Synthesis of perfluoropolyether-based silane FESi-2-N-[2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionyl]-γ-aminopropylmethyldimethoxysilane

[0042] The preparation method is the same as Example 1, but with 0.1mol, 16.33g γ- aminopropyl methyl dimethoxysilane KH-554 replaced with 0.1mol KH-550, the reaction temperature is 55 ° C, the reaction time is about 1h, the reaction ends, after cooling, water washing salt, a transparent organic phase is separated, i.e., a solution containing N- [2,3,3,3,3-tetrafluoro-2- (heptafluoropropoxy) propionyl] -γ-aminopropylmethyl dimethoxysilane (FESi-2), the silane content is about 50%, spare

[0043]

[0044] (2) Preparation of perfluoropolyether / alkenyl silicone resin (FVSR-2).

[0045] Take 20.0g of SIE content of about 50% FESi-2, 3.33g KH-570 (FESi: VSi mass ratio = 75%: 25%, wt / wt) in the reactor equipped with a thermometer, reflux condenser, electric mixer, stirred and mixed, heated to 45 ° C, adjusted with HCl pH = 3-4, and t...

Embodiment 3

[0050] Synthesis of perfluoropolyether-silane FESi-3-N-[2,3,3,3-tetrafluoro-2-(heptafluoropropoxy)propionyl]-γ-aminopropylmethyltrimethoxysilane

[0051] The preparation method is the same as Example 1, but with 0.1mol, 17.93g γ- aminopropylmethyltrimethoxysilane KH-540 replaced with 0.1mol KH-550, the reaction temperature is 45 ° C, the reaction time is 2h, the reaction ends, after cooling, water washing salt, a transparent organic phase is separated, i.e., a solution containing N- [2,3,3,3,3-tetrafluoro-2- (heptafluoropropoxy) propionyl] -γ- aminopropyltrimethoxysilane (FESi-3), the silane content is about 50%, standby.

[0052]

[0053] (2) Preparation of perfluoropolyether / alkenyl silicone resin (FVSR-3).

[0054] Take 20.33g of FESi-3, 1.80g of SI content of about 50%, 1.80g of 3-methacryloyloxypropyl methyl dimethoxysilane KH-571 (FESi: VSi mass ratio = 85%: 15%, wt / wt) in the reactor equipped with a thermometer, reflux condensate tube, electric mixer, stir and mix well,...

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Abstract

The invention discloses a photocuring composition containing perfluoropolyether / alkenyl silicon resin and a method for constructing a waterproof and antifouling coating. Therefore, perfluoropolyether / alkenyl silicon resin FVSR which can be cured by light and is simultaneously connected with an N-perfluoropolyether acyl-gamma-aminopropyl silicon chain link and a reactive alkenyl silicon chain link in the structure, multifunctional acrylate polyurethane modified fluorine-containing acrylate resin, a perfluoropolyether acrylate reactive diluent, KH-570 / fluoroalkyl modified nano silica sol, a silane coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent, a coupling agent and a coupling agent are added into the coupling agent, and the coupling agent is added into the coupling agent. The preparation method comprises the following steps: compounding perfluoropolyether, vinyl silicone resin, a photoinitiator and the like to prepare a photocureable coating composition, uniformly coating the surface of a base material such as ceramic with the photocureable coating composition containing perfluoropolyether / vinyl silicone resin, and carrying out UV illumination curing, so that a waterproof and oil-resistant coating can be prepared, the contact angle WCA water of water on the surface of the coating can reach 130.2 degrees, and the hardness reaches 4H; the coating can resist 5% sulfuric acid for more than or equal to 168 hours and can resist 5% sodium carbonate aqueous solution for more than or equal to 168 hours, and the surface is intact without damage.

Description

Technical field [0001] The present invention belongs to the field of functional resins and coatings, specifically relates to a light-curing coating composition containing perfluoropolyether and alkenyl co-modified silicone resin and a method for preparing a waterproof and antifouling coating based on the composition. Background [0002] Light-curing coatings, that is, a type of coating that can quickly trigger chemical reactions and achieve coating curing in a short period of time under the conditions of photoinitiator and ultraviolet light irradiation. Light-curing coatings, because of their advantages of fast curing molding, environmental protection, cleanliness and safety, have been widely used in high-tech fields such as 3D printing, and have become an important direction for the development of resin coatings in recent years. It can be seen from the literature that light-curing coatings are mainly composed of 3-6 multifunctional photocuring resins, 1-2 functional active dilu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/12C09D133/00C09D7/20C09D7/62
CPCC09D183/12C09D133/00C09D7/20C09D7/62C08L33/00C08K3/36C08K9/06C08K9/04C08L83/12
Inventor 江日新钟法往巫耿航谢续兵江晓云
Owner HUIZHOU XINHAOYUAN DEV