Silicon-containing acrylic resin based on catechol structural functionalization and preparation method and application thereof

A technology of silicic acrylic acid and catechol, applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve the problem of weak substrate adhesion, unsatisfactory adhesion effect, and loss of antifouling effect and other problems, to achieve the effect of increasing the adhesion capacity, reducing the complexity and use cost, and being easy to mix and disperse.

Inactive Publication Date: 2017-12-26
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese invention patent of CN 102212306 B discloses a silicone type marine antifouling coating base material and its preparation method and application. The inventive method prepares a polysiloxane network crosslinked structure, and some silicon atoms are connected There are organosilicon polyurethane compound side groups with bactericidal function, and the inventive method uses a network crosslinked structure as the base material of marine antifouling coatings, which has a good bactericidal effect, and its good hydrophobicity and low surface energy make it The base material has good antifouling performance, but due to its low surface energy, the adhesion ability of the base material to the substrate is weak, making the adhesion effect unsatisfactory, and it is easy to fall off after soaking in seawater, thus losing the antifouling effect

Method used

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  • Silicon-containing acrylic resin based on catechol structural functionalization and preparation method and application thereof
  • Silicon-containing acrylic resin based on catechol structural functionalization and preparation method and application thereof

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Embodiment 1

[0028] A kind of functionalized silicon-containing acrylic resin based on catechol structure and preparation method and application thereof, comprising the following steps:

[0029]1) Equip the four-port reaction vessel with a stirrer, addition funnel, reflux condensing device, and thermometer respectively, add 25 parts of butanol and 30 parts of ethyl acetate, heat up to 100°C under stirring and keep it warm; then accurately weigh the methyl 30 parts of n-propyl acrylate, 4 parts of N-(3,4-dimethoxyphenyl) acrylamide, 25 parts of vinyltrimethoxysilane, 1.5 parts of diacetyl peroxide and uniformly mixed, the mixture was stabilized Add the drop rate into the four-port reaction vessel within 3 hours, continue to stir and keep warm for 2 hours to obtain the prepolymer; 2) Add 5 parts of hydrogen bromide aqueous solution to the prepolymer, heat and reflux for 1.5 hours and then change to distillation 3) Weigh 10 parts of functionalized silicon-containing acrylic resin based on cat...

Embodiment 2

[0031] A functionalized silicon-containing acrylic resin based on catechol structure and its preparation method and application, comprising the following steps:

[0032] 1) Prepolymerization: Add 40g of xylene and 8g of n-butanol into a four-necked reaction flask equipped with a stirrer, addition funnel, reflux condensing device, and thermometer, stir and heat up to 100-110°C and keep it warm. Then a homogeneous mixture of 4'-hydroxyl-3'-methoxyphenyl-2-propen-1-one, 32g methyl acrylate, 16g vinyltrimethoxysilane, 1.5g azobisisobutyronitrile was stabilized The dropping speed is added in the four-necked reaction flask within 4 hours, after continuing to stir and heat for 40 minutes, add dropwise a uniform mixture of 4g xylene, 4g n-butanol and 0.05g azobisisobutyronitrile in the four-necked flask within 1 hour. The mixture was continuously stirred and heated for 2 hours to obtain the prepolymer;

[0033] 2) Preparation: under stirring, add 10 g of hydrochloric acid to the prep...

Embodiment 3

[0036] A method for preparing a marine antifouling coating based on a catechol structure functionalized silicon-containing acrylic resin as a film-former, comprising the following steps:

[0037] Pre-polymerization: Equip the four-port reaction vessel with stirrer, liquid addition funnel, reflux condensing device, and thermometer, add 50 parts of xylene and 50 parts of butyl acetate, heat up to 100°C under stirring and keep it warm; then accurately weigh the formaldehyde 50 parts of butyl acrylate, 5 parts of N-(4-hydroxy-3-methoxyphenyl) acrylamide, 20 parts of acryloxypropyl trimethoxysilane, 2.0 parts of tert-butyl peroxybenzoate and Mix evenly, add the mixture into the four-port reaction vessel within 4 hours at a stable rate of addition, continue to stir and keep warm for 2 hours to obtain the prepolymer; introduce catechol structural functions into the side chain of the silicon-containing acrylic resin The chemical group increases the adhesion of the resin, reduces the c...

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Abstract

The invention discloses a silicon-containing acrylic resin based on catechol structural functionalization and preparation and an application thereof. Alkyl acrylate, a vinyl compound containing a catechol ether structure functionalized group and a vinyl silicon-containing compound are subjected to copolymerization reaction to obtain a prepolymer, then the prepolymer undergoes a reaction with a hydrogen halide compound to prepare the functionalized silicon-containing acrylic resin based on the catechol structural functionalization, and an organic solution of the resin is composited with a plasticizer, a filler and an antifouling agent to prepare a marine antifouling coating. The beneficial effects comprise that the catechol structure functionalized group is introduced into a side chain of silicon-containing acrylic resin, the adhesive force of the resin is increased, and the coating construction complexity degree and use costs of the antifouling coating are reduced; the catechol functionalized group has relatively high activity, the resin is optimized and modified by introducing the group with special functions, the composited marine antifouling coating is a marine antifouling coating, having the advantages of strong adhesive force and excellent decontamination ability, of the silicon-containing acrylic resin based on catechol structural functionalization.

Description

technical field [0001] The invention relates to marine antifouling paint raw materials and the fields of preparation and application thereof, in particular to a functionalized silicon-containing acrylic resin based on a catechol structure and a preparation method and application thereof. technical background [0002] Marine antifouling paint is a special kind of paint, whose main function is to prevent the fouling of marine organisms by the gradual leakage of antifouling agent (poison material) in the paint film. However, the earlier antifouling coatings caused secondary pollution to the marine environment while inhibiting the attachment of marine organisms. Therefore, the development of efficient and durable green marine antifouling coatings has become a research hotspot, and considerable progress has been made. The shells below the waterline such as ships and docks have been in contact with seawater for a long time and are corroded by seawater; the adhesion of marine orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/58C08F230/08C08F220/14C08F216/36C09D133/10C09D133/08C09D191/06C09D7/12C09D5/16
CPCC08F220/14C08F220/18C08F220/1803C08F220/1804C08K5/12C08K5/40C08K5/55C08K2003/2241C08K2003/2272C09D5/16C09D143/04C08L91/06C08K3/22C08K5/3432C08F230/08C08F216/36C08F220/58
Inventor 徐焕志许康赵淑江胡建坤刘畅
Owner ZHEJIANG OCEAN UNIV
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