Preparation method of silicone modified acrylic hydrogel antifouling coating

An antifouling coating, acrylic technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of loss of antifouling performance, hydrogel surface damage, and change of material surface properties, etc. To achieve the effects of prolonging the anti-pollution period, scientific design and energy saving

An antifouling coating, acrylic technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of loss of antifouling performance, hydrogel surface damage, and change of material surface properties, etc. To achieve the effects of prolonging the anti-pollution period, scientific design and energy saving

CN105219206BActive Publication Date: 2017-11-21舟山市知识产权促进会
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  • Preparation method of silicone modified acrylic hydrogel antifouling coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Synthesis of silicone modified acrylic resin:

[0023] Add 20g of butyl acetate and 180g of xylene into a four-necked flask equipped with a stirrer, reflux condenser, constant pressure dropping funnel, and thermometer, raise the temperature to 90°C, and then weigh 50g of methyl methacrylate, 48g of formazan Trimethylsilyl acrylate, 10g γ-(methacryloyloxy) propyltrimethoxysilane, 92g n-butyl acrylate, 1.5g azobisisobutyronitrile mixed solution, through constant pressure dropping funnel After 3 hours of constant-speed dropwise addition, 0.5 g of azobisisobutyronitrile was added, and the reaction was continued for 3 hours. Cool to 60°C, add 20g of hydroxy silicone oil, react for 12h, cool to room temperature, and finally add 30g of xylene to adjust the dilution of the resin to complete the reaction.

[0024] The specific synthetic route is as figure 1 shown.

[0025] (2) Preparation of two-component hydrogel antifouling coating: the coating contains two components A...

Embodiment 2

[0030] (1) Synthesis of silicone modified acrylic resin:

[0031] Add 20g of butyl acetate and 180g of xylene into a four-necked flask equipped with a stirrer, reflux condenser, constant pressure dropping funnel, and thermometer, raise the temperature to 90°C, and then weigh 50g of methyl methacrylate, 48g of formazan Tributylsilyl acrylate, 10g γ-(methacryloyloxy)propyltrimethoxysilane, 62g n-butyl acrylate, 30g 2-ethylhexyl acrylate, 1.5g azobisisobutyronitrile The mixed solution was added dropwise at a constant rate for 3 hours with a constant pressure dropping funnel, and 0.5 g of azobisisobutyronitrile was added to continue the reaction for 3 hours. Cool to 60°C, add 20g of hydroxyl silicone oil (average molecular weight: 400), react for 12h, cool to room temperature, and finally add 30g of xylene to adjust the dilution of the resin to complete the reaction.

[0032] Concrete synthetic route is consistent with embodiment 1.

[0033] (2) Preparation of two-component hydr...

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Abstract

A preparation method of a silicone-modified acrylic hydrogel antifouling coating, the steps of: first synthesizing a silicone-modified acrylic resin, and then preparing a hydrogel antifouling coating: the antifouling coating is composed of A and B components For two-component coatings, the mass ratio of component A and component B is 8:1, and component A is the resin base material carrier, and the ingredients are: 55-65 parts of silicone modified acrylic resin, 4-4 parts of iron oxide red 6 parts, 0.5-1.5 parts of organic bentonite, 4-6 parts of zinc oxide, 7-9 parts of copper pyrithione, 8-10 parts of Sea‑Nine211 antifouling agent, 10-12 parts of organic solvent; component B is cross-linked agent carrier, the components are 25-35 parts of aziridine cross-linking agent, 60-70 parts of n-butanol, and 4-6 parts of water; the above-mentioned parts are parts by mass. The invention introduces silicone into the acrylic resin system by chemical method, and then cooperates with appropriate additives and antifouling agents to form a low-surface organic silicon antifouling barrier layer, so that the coating has the functions of self-layering and self-repairing, not only the process Simple, good anti-fouling effect, and the amount of anti-fouling agent is small, effectively prolonging the anti-fouling effect.

Description

technical field [0001] The invention belongs to the technical field of antifouling coatings, in particular to a preparation method of a silicone-modified acrylic hydrogel antifouling coating. Background technique [0002] Hydrogel is a polymeric elastomer with a three-dimensional cross-network structure, which has common entropic elasticity and is able to absorb large amounts of water and maintain it in the polymer network. Hydrogels are distinguished from general solid materials (such as metals, plastics, etc.) mainly due to their huge water absorption (60-99wt%) and their low elastic modulus, which is generally one percent to one percent of ordinary solid materials. One in ten thousand. Due to its uniqueness similar to natural tissue, and its properties such as structural strength, water absorption effect, elasticity, viscoelasticity, surface and other properties that can be adjusted by controlling the chemical composition and cross-linking degree of the hydrogel make it ...

Claims

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Application Information

Patent Timeline
21 Nov 2017
Publication
CN105219206B
IPC
C09D151/08; C09D5/16; C09D7/12; C08F283/12; C08F220/14; C08F230/08; C08F220/18
Inventors
胡建坤; 陆阿定