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Bacteriostatic and seaweed adhesion-resistant silane modified polyampholyte hydrogel high-adhesion coating and preparation method thereof

A polyampholyte, silane modification technology, applied in coatings, antifouling/underwater coatings, paints containing biocides, etc., can solve the problem of weak adhesion between silane and substrate, non-electrolyte hydrophilic polymers Weak hydration and other problems, to achieve the effect of excellent mechanical properties

Active Publication Date: 2022-05-10
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SOSA hydrogel prepared by this method also has the disadvantages of weak hydration of the non-electrolyte hydrophilic polymer PVA / PAAm network, and weak adhesion between the exposed silane on the hydrogel surface and the substrate.

Method used

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  • Bacteriostatic and seaweed adhesion-resistant silane modified polyampholyte hydrogel high-adhesion coating and preparation method thereof
  • Bacteriostatic and seaweed adhesion-resistant silane modified polyampholyte hydrogel high-adhesion coating and preparation method thereof
  • Bacteriostatic and seaweed adhesion-resistant silane modified polyampholyte hydrogel high-adhesion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1): Plasma cleaning the glass substrate washed with deionized water and dried for 10 minutes to obtain a hydroxylated substrate surface.

[0033] Step 2): Measure 80ml of ethanol, 20ml of deionized water, and 0.2ml of acetic acid in a square container, add 2wt% MEMO relative to the mass of the solvent, and mix well.

[0034] Step 3): Put the glass substrate in step 1) into the mixed solution in step 2), dip-coat at room temperature for 2 hours, and then dry at 60° C. for 30 minutes.

[0035] Step 4): The glass substrate obtained in step 3) is combined with untreated glass and a silicone gasket to form a mold, and preheated in an oven at 90° C. for 30 minutes.

[0036] Step 5): Weigh 3.1122g DAC (55mol%), 2.4093g NaSS (45mol%), 0.0039g MBAA (0.1mol%) and 0.0037g KA (0.1mol%) respectively in the beaker, add 10ml deionized water after 70 °C and stirred in a water bath for 15 minutes to obtain a uniform prepolymer solution.

[0037] Step 6): Add 15 μl MEMO to the pre...

Embodiment 2

[0040] Step 1): Plasma cleaning the glass substrate washed with deionized water and dried for 10 minutes to obtain a hydroxylated substrate surface.

[0041] Step 2): Measure 80ml of ethanol, 20ml of deionized water, and 0.2ml of acetic acid in a square container, add 2wt% MEMO and mix well.

[0042] Step 3): Put the glass substrate in step 1) into the mixed solution in step 2), dip-coat at room temperature for 2 hours, and then dry at 60° C. for 30 minutes.

[0043] Step 4): The glass substrate obtained in step 3) is combined with untreated glass and a silicone gasket to form a mold, and preheated in an oven at 90° C. for 30 minutes.

[0044] Step 5): Weigh 2.9055g DAC (51.33mol%), 2.6062g NaSS (48.66mol%), 0.0039g MBAA (0.1mol%) and 0.0037g KA (0.1mol%) in a beaker, add 10ml deionized After water, stir in a water bath at 70°C for 15 minutes to obtain a uniform prepolymer solution.

[0045] Step 6): Add 19 μl MEMO to the prepolymer solution obtained in step 5), mix it unifo...

Embodiment 3

[0048] Step 1): Plasma cleaning the glass substrate washed with deionized water and dried for 10 minutes to obtain a hydroxylated substrate surface.

[0049] Step 2): Measure 80ml of ethanol, 20ml of deionized water, and 0.2ml of acetic acid in a square container, add 2wt% MEMO and mix well.

[0050] Step 3): Put the glass substrate in step 1) into the mixed solution in step 2), dip-coat at room temperature for 2 hours, and then dry at 60° C. for 30 minutes.

[0051] Step 4): The glass substrate obtained in step 3) is combined with untreated glass and a silicone gasket to form a mold, and preheated in an oven at 90° C. for 30 minutes.

[0052] Step 5): Weigh 2.8292g DAC (50mol%), 2.677g NaSS (50mol%), 0.0039g MBAA (0.1mol%) and 0.0037g KA (0.1mol%) respectively in a beaker, add 10ml of deionized water Stir in a water bath at 70°C for 15 minutes to obtain a uniform prepolymer solution.

[0053] Step 6): Add 20 μl MEMO to the prepolymer solution obtained in step 5), mix it eve...

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Abstract

The invention relates to a preparation method of a silane modified poly-ampholyte hydrogel high-adhesion coating with bacteriostasis and algae adhesion resistance, which comprises the following steps: mixing DAC, NaSS, a cross-linking agent, an initiator, deionized water and MEMO to obtain a prepolymer solution, covering the prepolymer solution on the surface of a base material subjected to hydroxylation treatment and silane treatment, and forming to obtain a hydrogel coating, the antibacterial and seaweed adhesion resistant silane modified polyampholyte hydrogel high-adhesion coating is obtained. The silane modified polyampholyte hydrogel is adopted, through the coupling effect of silane and the synergistic effect of DAC molecular chains and ionic bonds of the substrate, the hydrogel coating has the excellent bonding performance, meanwhile, the hydrogel coating has the good antibacterial performance and diatom adhesion resistance, and the hydrogel coating can serve as a preferred material of a marine antifouling coating. Wide application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a silane-modified polyampholyte hydrogel high-adhesion coating for antibacterial and seaweed adhesion resistance and a preparation method thereof. Background technique [0002] Hydrogel is a polymer with a three-dimensional network structure that can store a large amount of water without swelling and damage in water. It can lock water and maintain the stability of the structure. After absorbing water, the hydrogel has a smooth surface and a lower surface. It is similar to the mucus layer secreted by the surface of large marine organisms, so it has a wide application prospect as a hydrogel coating in marine antifouling. However, the general hydrogel has poor adhesion to the base material after absorbing water and swelling, and cannot inhibit the growth of marine organisms, so it cannot meet the requirements of use. "Adhesive-lubricative double-sidedness" hydrogel coatin...

Claims

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Application Information

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IPC IPC(8): C09D133/14C09D5/14C09D5/16C08F220/34C08F212/14C08F222/38C08F230/08C08J3/075
CPCC09D143/04C09D5/14C09D5/1662C08F220/34C08J3/075C08F212/30C08F222/385C08F230/085
Inventor 李学锋商伶俐朱华雄黄以万陈梦繁王永林董鑫刘若卿
Owner HUBEI UNIV OF TECH
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