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Preparation method of degradable polyurethane resin with fluorine-containing side chain

A technology of polyurethane resin and side chain, which is applied in the field of preparation of side chain fluorine-containing degradable polyurethane resin for antifouling coatings, which can solve the problems of destroying the marine ecological environment and achieve good antifouling effect, good adhesion, and the effect of inhibiting adhesion

Active Publication Date: 2021-01-22
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this type of antifouling coating is that the added cuprous oxide will be enriched in the organism and destroy the ecological environment of the ocean

Method used

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  • Preparation method of degradable polyurethane resin with fluorine-containing side chain
  • Preparation method of degradable polyurethane resin with fluorine-containing side chain
  • Preparation method of degradable polyurethane resin with fluorine-containing side chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Dissolve 10g of poly-2-hydroxyethyl methacrylate in xylene and pour it into a three-necked flask, add 10.66g of isophorone diisocyanate under ice-water bath conditions, add 0.15g (0.5ωt% ) catalyst dibutyltin dilaurate, gradually heated up to 40°C for 2 hours at a speed of 250r / min to prepare a group-modified acrylic resin; 17.47g of 1H,1H,2H,2H-perfluoro-1-octanol Add 10.66g of isophorone diisocyanate in an ice-water bath, add 0.23g (0.5ωt%) catalyst dibutyltin dilaurate, and gradually heat up to 40°C for 2 hours at 250r / min; weigh 38.4 gPEG 800 Slowly drop into a three-necked flask equipped with group-modified acrylic resin, heat to 50°C for 2 hours at a speed of 250r / min, and then drop into the modified 1H, 1H, 2H, 2H-perfluoro-1 - Octanol was heated to 60°C for 2 hours, and after the reaction was completed, it was purified and filtered.

[0023] image 3 It is the infrared spectrogram of the side chain fluorine-containing polyurethane resin synthesized...

Embodiment 2

[0024] Example 2: Dissolve and disperse 10g poly-2-hydroxyethyl methacrylate in xylene and pour it into a three-necked flask, add 10.66g isophorone diisocyanate under ice-water bath conditions, add 0.08g (0.25ωt% ) catalyst dibutyltin dilaurate, gradually heated up to 40°C for 2 hours at a speed of 250r / min to prepare a group-modified acrylic resin; 13.98g of 1H,1H,2H,2H-perfluoro-1-octanol Disperse in tetrahydrofuran, add 8.53g of isophorone diisocyanate in an ice-water bath, add 0.09g (0.25ωt%) catalyst dibutyltin dilaurate, and gradually heat up to 40°C for 2 hours at a speed of 250r / min; weigh 23.04 gPEG 600 Slowly drop into a three-necked flask equipped with group-modified acrylic resin, heat to 50°C for 2 hours at a speed of 250r / min, and then drop into the modified 1H, 1H, 2H, 2H-perfluoro-1 - Octanol was heated to 60°C for 2 hours, and after the reaction was completed, it was purified and filtered.

Embodiment 3

[0025] Example 3: Dissolve and disperse 10g poly-2-hydroxyethyl methacrylate in xylene and pour it into a three-necked flask, add 10.66g isophorone diisocyanate under ice-water bath conditions, add 0.15g (0.5ωt% ) Catalyst dibutyltin dilaurate, gradually heated up to 40°C at 250r / min and reacted for 2h to prepare a group-modified acrylic resin; 13.98g1H,1H,2H,2H-perfluoro-1-octanol Add 8.53g of isophorone diisocyanate in an ice-water bath, add 0.18g (0.5ωt%) catalyst dibutyltin dilaurate, and gradually heat up to 40°C at 250r / min to react for 2h; weigh 19.2 gPEG 400 Slowly drop into a three-necked flask equipped with group-modified acrylic resin, heat to 50°C for 2 hours at a speed of 250r / min, and then drop into the modified 1H, 1H, 2H, 2H-perfluoro-1 - Octanol was heated to 60°C for 2 hours, and after the reaction was completed, it was purified and filtered.

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Abstract

The invention provides a preparation method of degradable polyurethane resin with a fluorine-containing side chain, which comprises the following steps of by using different reaction activities of two-NCO groups of isophorone diisocyanate in the presence of a catalyst dibutyltin dilaurate, simultaneously grafting the polyethylene glycol chain segment and the hydrophobic fluorine-containing polymer chain segment to the side chain of the acrylic resin to obtain the fluorine-containing degradable polyurethane resin. Due to the addition of the polyethylene glycol chain segment, the degradation performance of the resin can be improved, and the adhesion of protein molecules and marine fouling organisms can be better inhibited by utilizing the low surface energy property of the fluorine-containing polymer chain segment and the property that the fluorine-containing polymer chain segment is easier to gather on the surface, so that a better antifouling effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical materials. Specifically, the invention relates to a preparation method of side chain fluorine-containing degradable polyurethane resin for antifouling coatings. Background technique [0002] As a mode of transportation with low cost and using ocean transportation without being restricted by different land terrains, ship transportation occupies a large proportion in the transportation industry. However, the presence of marine fouling organisms in the ocean will not only increase navigational resistance and fuel consumption, but also intensify the corrosion of ships and marine equipment, leading to equipment failure. At present, the main antifouling method is to apply antifouling paint on the surface of the ship. Most of the antifouling coatings used in the market are tin-free self-polishing antifouling coatings. The antifouling mechanism is that by adding cuprous oxide as an antifouling agent, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/62C08G18/28C08G18/65C08G18/32C09D175/08C09D175/04C09D5/16
CPCC08G18/2825C08G18/3206C08G18/4063C08G18/4833C08G18/6229C08G18/6511C09D5/1662C09D175/04C09D175/08
Inventor 汪炳叔张汉彬谢志鹏
Owner FUZHOU UNIV
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