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Corrosion-resistant antibacterial antistatic coating and preparation method thereof

An anti-static and corrosion-resistant technology, used in anti-corrosion coatings, conductive coatings, anti-fouling/underwater coatings, etc. The effect of good adhesion, filling the market gap and low production cost

Inactive Publication Date: 2021-04-16
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is based on the above-mentioned background technology, in order to solve the problems such as the low corrosion resistance of the two-component water-based polyurethane coating, the easy accumulation of static charges on the coating surface, causing electrostatic discharge and the easy growth of microorganisms on the coating surface, etc., to provide a A corrosion-resistant, antibacterial, and antistatic coating is obtained by uniformly mixing self-made nanocomposite materials with two-component water-based polyurethane to obtain a multifunctional coating with excellent paint film performance; a preparation method for corrosion-resistant, antibacterial, and antistatic coatings is further provided

Method used

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  • Corrosion-resistant antibacterial antistatic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of hydroxyacrylate emulsion

[0034] A. Preparation:

[0035] Weigh methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl methacrylate in a weight ratio of 10:14:1:8 and put them into a beaker as a mixed monomer for use.

[0036] B, preparation of seed emulsion:

[0037] Add 40 parts by weight of distilled water, 0.8 parts by weight of emulsifier SDS / OP-10 (weight ratio 4:6) and 0.1 parts by weight of Sodium bicarbonate, vacuumize and fill with nitrogen, control the reaction temperature at 85°C; add 5% of the total amount of mixed monomers, and start to drop 0.05 parts by weight of initiator ammonium persulfate at a speed of 0.05mL / min at the same time. for 30 minutes until a uniform blue phase appears in the system.

[0038] C. Polymerization reaction:

[0039] Add the remaining mixed monomer and 0.15 parts by weight of the initiator ammonium persulfate at 85°C. The dropping time is 2.5 hours. 95 to adjust the pH value to 9 to obtain a...

Embodiment 2

[0045] (1) Preparation of hydroxyacrylate emulsion

[0046] A. Preparation:

[0047] Weigh methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl methacrylate in a weight ratio of 10:14:1:8 and put them into a beaker as a mixed monomer for use.

[0048] B, preparation of seed emulsion:

[0049] Add 40 parts by weight of distilled water, 1.2 parts by weight of emulsifier SDS / AEO-9 (weight ratio 5:5) and 0.1 parts by weight of Sodium bicarbonate was evacuated and filled with nitrogen, and the reaction temperature was controlled at 75°C. Add 5% of the total amount of mixed monomers, and at the same time start to drop 0.05 parts by weight of initiator ammonium persulfate at a rate of 0.05 mL / min. The reaction time is 30 minutes, and a uniform blue phase appears in the system.

[0050] C. Polymerization reaction:

[0051] Add the remaining mixed monomers and 0.15 parts by weight of the initiator ammonium persulfate at 80°C. The dropping time is 2.5 hours. After the ...

Embodiment 3

[0057] (1) Preparation of hydroxyacrylate emulsion

[0058] A. Preparation:

[0059] Weigh methyl methacrylate, butyl acrylate, acrylic acid and hydroxyethyl methacrylate in a weight ratio of 10:14:1:8 and put them into a beaker as a mixed monomer for use.

[0060] B, preparation of seed emulsion:

[0061] Add 40 parts by weight of distilled water, 1.0 parts by weight of emulsifier BL673 and 0.1 parts by weight of sodium bicarbonate in a four-necked flask equipped with an electric stirrer, a thermometer, a condenser tube and a dropping funnel, vacuumize and fill with nitrogen, and put the reaction The temperature was controlled at 85°C. Add 5% of the total amount of mixed monomers, and at the same time start to drop 0.05 parts by weight of initiator potassium persulfate at a rate of 0.05 mL / min. The reaction time is 30 minutes, and a uniform blue phase appears in the system.

[0062] C. Polymerization reaction

[0063] Add the remaining mixed monomers and 0.15 parts by wei...

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Abstract

The invention discloses a corrosion-resistant antibacterial antistatic coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 100 parts of hydroxyl acrylate emulsion, 1-5 parts of a nano composite material and 15-30 parts of a hydrophilic modified curing agent, wherein the nano composite material is a ternary nano composite material polyaniline / copper / zirconium oxide, the polyaniline / copper / zirconium oxide is prepared by taking copper chloride dehydrate as an oxidizing agent and adopting an in-situ polymerization method, and the mass ratio of aniline to copper chloride dehydrate to zirconium oxide is 1: 5: (0.1-0.3). After the coating prepared by adopting the technical scheme is applied to the surface of a base material, the following effects are achieved: firstly, the coating has a good antibacterial effect; secondly, a good antistatic effect can be achieved; thirdly, a good corrosion-resistant effect is achieved; and fourthly, the paint has good paint film performance.

Description

technical field [0001] The invention relates to the technical field of two-component waterborne polyurethane coatings, in particular to a corrosion-resistant, antibacterial and antistatic coating and a preparation method thereof. Background technique [0002] Two-component waterborne polyurethane coatings are composed of multifunctional hydroxyl components and multifunctional isocyanate components. They began to be developed in the late 1980s and have been commercialized so far. The release of organic compounds has excellent physical and mechanical properties and a wide range of soft and hard strengths, and can be widely used in construction, wood, plastics, aviation and other fields. However, two-component waterborne polyurethane coatings have weaker corrosion resistance compared to solvent-based polyurethanes. And the rapid growth and accumulation of microorganisms on two-component waterborne polyurethane coatings is the main disadvantage that hinders the wide application...

Claims

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Application Information

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IPC IPC(8): C09D5/10C09D5/14C09D5/24C09D175/04C08F220/18C08F220/14C08F220/06C08F220/20C08G18/62
Inventor 张发爱徐鑫梦余彩莉
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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