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Antifouling graphene paint and preparation method thereof

An anti-fouling coating, graphene technology, applied in anti-fouling/underwater coatings, coatings, paints containing biocides, etc. The effect of significant peeling, enhanced bonding, and enhanced toughness

Active Publication Date: 2019-04-09
国宏中晶集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of graphene antifouling paint, to solve the problem that the zinc acrylic paint of prior art is poisonous, and antifouling ability relies on toxic filler

Method used

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  • Antifouling graphene paint and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A graphene antifouling coating is characterized in that: it comprises 30-40 parts by weight of zinc acrylate resin, 75-85 parts by weight of ethyl acetate, 3-5 parts by weight of rosin, 14-18 parts by weight of zinc pyrithione, PVA super 0.2-0.4 parts by weight of fine powder, 5-10 parts by weight of graphene oxide microchips with an average radial size higher than 5um, and 20-30 parts by weight of filler. Described zinc acrylic resin is one of ZnP-1, ZnP-2, ZnP-3, ZnP-4, ZnP-5, ZnP-6; Between 10-40um; the filler does not contain copper element, and the content of aromatic substances in the filler is less than 5% by weight. Other types of zinc acrylate resins cannot be used to produce stable coatings and are not considered here. There are many types of fillers used in antifouling fillers, and there are no particularly strict restrictions here. Some inorganic or polymer fillers are acceptable, as long as the above-mentioned non-polluting conditions are met. The additio...

Embodiment 2

[0017] A kind of preparation method of graphene antifouling paint, it makes a kind of graphene antifouling paint as claimed in claim 2, is characterized in that, comprises the following steps: 1) the preparation step of graphene microplate: with prefabricated A large number of expanded graphite flakes are used as raw materials, and the graphene microflake dispersion is generated by ultrasonic peeling in absolute ethanol for more than 1-2 hours; after low-frequency ultrasound, the upper layer of the dispersion is taken out, and the unstripped graphite is left in the container; the sublation process: Add absolute ethanol, the solvent of the upper dispersion liquid, to more than 200-300ml, high-intensity ultrasonic vibration for 3-5min, let it stand for 5-10s, immediately discard half of the upper dispersion liquid, and then add absolute ethanol to more than 200-300ml volume; repeat the above sublation process at least 10-20 times, until the average radial size of the graphene mic...

Embodiment 3

[0021] The preparation method of a kind of graphene antifouling paint as described in embodiment 2 is characterized in that: in described step (1), in dehydrated alcohol, generate graphene microchip dispersion liquid through ultrasonic stripping more than 1.5h; Sublation process: Add absolute ethanol as the solvent of the upper dispersion to more than 220ml, high-intensity ultrasonic vibration for 4 minutes, let it stand for 6 seconds, immediately discard half of the upper dispersion, and then add absolute ethanol to a volume of more than 220ml; repeat the above sublation Process at least 15 times until the average radial size of the graphene microflakes is confirmed to be higher than 5um by AFM or SEM.

[0022] In the step (2), pour 75-80 parts by weight of ethyl acetate into a large wide-mouth container, add a polytetrafluoroethylene magnetic rotor, heat to 26°C and stir at a speed of 8 revolutions / s, slowly Add 4 parts by weight of rosin superfine powder, and continue to st...

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Abstract

The invention discloses an antifouling graphene paint characterized by containing 30-40 parts of zinc acrylate resin, 75-85 parts of ethyl acetate, 3-5 parts of rosin, 14-18 parts of zinc pyrithione,0.2-0.4 part of superfine PVA powder, 5-10 parts of graphene oxide microsheets with the average radial size being higher than 5 mu m and 20-30 parts of filler. The invention further provides a preparation method of the antifouling graphene paint, and the preparation method comprises the following steps: preparing the graphene oxide microsheets; preparing a precursor dispersion solution; and preparing the antifouling graphene paint.

Description

technical field [0001] The invention relates to the field of graphene antifouling coatings, in particular to a graphene antifouling coating and a preparation method thereof. Background technique [0002] Coating technology has been developed for more than 100 years. From the earliest organic solvent-based coatings to the current energy-saving and environmentally-friendly coatings, organic solvents played a huge role in the early coating preparation, but due to environmental pollution and toxic waste, Emissions are not up to standard, and organic coatings have declined. Now water-based inorganic coatings are emerging. By adding fillers of granular or sheet materials, they can protect the surface of materials without being corrosive or polluting. , which is an advanced development trend. [0003] In places near the sea, zinc acrylate resin is the preferred coating type due to its antifouling ability and strong salt resistance, but zinc acrylate materials also have their advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D5/16C09D7/61
CPCC09D5/1662C09D5/1687C09D133/02C08L93/04C08L29/04C08K3/042
Inventor 张岩付吉国董伟赵然周卫东曾蕾
Owner 国宏中晶集团有限公司