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Corrosion-resistant graphene industrial coating as well as preparation method and application thereof

A graphene, anti-corrosion technology, applied in anti-corrosion coatings, coatings and other directions, can solve problems such as the inability to effectively slow down the contact between oxygen and metal, the separation of coating and metal, and the aggravation of metal deterioration, achieve high hardness and slow down metal corrosion. , the effect of saving manpower and material resources

Active Publication Date: 2017-12-22
SUZHOU UNIV
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  • Abstract
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Problems solved by technology

[0005] One of the objectives of the present invention is to provide a kind of anti-corrosion graphene industrial coating, to alleviate the existing zinc-rich epoxy resin coating and zinc-rich polyurethane coating can only block the contact between moisture and metal, but cannot effectively slow down the corrosion of oxygen and metal. Contact, oxygen can pass through the coating and react with the metal at the interface between the metal and the coating to form oxides, resulting in the detachment of the coating from the metal, and the technical problem of aggravated metal deterioration

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  • Corrosion-resistant graphene industrial coating as well as preparation method and application thereof
  • Corrosion-resistant graphene industrial coating as well as preparation method and application thereof

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[0032] In a preferred embodiment of the present invention, the preparation method of graphene-zinc nanocomposite includes the following steps:

[0033] (a) Disperse zinc compound and graphene oxide in an alkaline solution for reaction to generate graphene oxide-zinc hydroxide composite;

[0034] (b) The graphene oxide-zinc hydroxide composite is subjected to a reduction reaction to obtain the graphene-zinc nanocomposite;

[0035] Wherein, the zinc compound is selected from at least one of zinc acetate, zinc propionate, zinc butyrate, zinc sulfate, zinc chloride and zinc nitrate.

[0036] In a preferred embodiment of the present invention, zinc acetate and graphene oxide are added to the alkaline solution in a mass ratio of (5-6):4 to react to generate graphene oxide-zinc hydroxide composite, which is washed and removed After impurities, sodium borohydride is added to reduce the graphene oxide-zinc hydroxide composite to obtain a graphene-zinc nanocomposite.

[0037] In a preferred embo...

Embodiment 1

[0054] This embodiment provides an anti-corrosion graphene industrial coating prepared from the following raw materials in parts by mass: 450 parts of styrene-acrylic emulsion, 80 parts of graphene-zinc nanocomposite, and 200 parts of wollastonite. 205 parts of ionized water, 5 parts of ethylene glycol, 1 part of AMP95, 10 parts of sodium lauryl sulfate, 1 part of glycerin, 1 part of T08, 1 part of octanol, 3 parts of ammonia, 40 parts of propylene glycol, 1 part of butanol, 5 parts of anti-flash rust agent, 3 parts of RM2020, 4 parts of RM 8W; among them, the graphene-zinc nanocomposite is prepared according to the following steps: 2.75g zinc acetate dihydrate, 200mg graphene oxide and 1g NaOH are dispersed in 25mL concentration In a 25% NH3·H2O solution, after reacting for 1 hour, adjust the pH to 11 with 0.1 mol / L NaOH, and continue the reaction for 2 hours to form a graphene oxide-zinc hydroxide complex. After washing to remove impurities, 1 g of sodium borohydride was adde...

Embodiment 2

[0056] This embodiment provides a corrosion-resistant graphene industrial coating. The difference between this embodiment and Embodiment 1 is that the styrene-acrylic emulsion is 550 parts, the graphene-zinc nanocomposite is 20 parts, and the wollastonite is 80 parts. Parts, 125 parts of iron red and 150 parts of deionized water.

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Abstract

The invention provides corrosion-resistant graphene industrial coating as well as a preparation method and application thereof and relates to the technical field of coating. The corrosion-resistant graphene industrial coating is mainly prepared from the following raw materials in parts by mass: 450-550 parts of acrylic resin, 20-80 parts of a graphene-zinc nano composite, 150-200 parts of deionized water and 200-300 parts of pigments and fillers, wherein the graphene-zinc nano composite is formed in a way that nano zinc particles grow and are reduced in situ on the surface of graphene oxide, and the technical problem that existing corrosion-resistant coating can not effectively reduce contact of oxygen and metal is solved. The corrosion-resistant graphene industrial coating prepared by synergism and coordination of the acrylic resin, the graphene-zinc nano composite as well as the pigments and fillers not only has high mechanical strength, good dispersion stability and long storage stable stage but also can effectively slow down the contact of oxygen and metal, effectively lower corrosion generation speed and provide effective protection for the metal.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to an anti-corrosion graphene industrial coating and a preparation method and application thereof. Background technique [0002] Corrosion is a phenomenon in which metals are damaged by the chemical or electrochemical effects of the surrounding environment. According to relevant statistics, the annual economic loss caused by corrosion in the world is 700 to 1,000 billion US dollars, which is about 6 times the total economic loss caused by natural losses such as earthquakes, floods, and typhoons. In my country, the annual loss due to corrosion is about 800 billion yuan, accounting for about 3% of GDP. For a long time, people have been using a variety of technologies to slow down the rate of corrosion. [0003] At present, the commercial anti-corrosion industrial coatings mainly include zinc-rich epoxy resin coatings and zinc-rich polyurethane resins. These coatings are coated on the metal...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D5/10
CPCC08K3/04C08K2003/0893C08K2201/011C09D5/106C09D125/14
Inventor 张琦张舒羽朱巍郝丽娟
Owner SUZHOU UNIV
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