Zinc-graphene heavy-duty anti-corrosive coating and preparation method thereof

A heavy-duty anti-corrosion and coating technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as affecting the ability of the paint film to resist water seepage, insufficient waterproof performance of zinc-rich epoxy anti-corrosion coatings, etc., to reduce oxidation Zinc fumes, reduced zinc salt content, enhanced binding and compatibility effects

Active Publication Date: 2014-07-02
江苏道蓬科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as we all know, graphene is prone to agglomeration, and the form of graphene in the coating will greatly affect its excellent performance, and it will also affect the ability of the paint film to resist water penetration, resulting in this zinc-rich ring. Insufficient waterproof performance of oxygen anti-corrosion coating

Method used

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  • Zinc-graphene heavy-duty anti-corrosive coating and preparation method thereof
  • Zinc-graphene heavy-duty anti-corrosive coating and preparation method thereof

Examples

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preparation example Construction

[0053] The preparation method of above-mentioned zinc olefin heavy-duty anti-corrosion paint, it may further comprise the steps:

[0054] S10, preparing graphene epoxy resin liquid: pre-impregnating and dispersing graphene with organic solvents and additives; at the same time, dissolving epoxy resin with organic solvents to make 75% epoxy resin liquid, adding pre-impregnated graphene to dissolve Mix well in the epoxy resin liquid, so that the viscosity of the mixed liquid reaches 1200-1500mPa.S, and the solid content is 70%±1%, to obtain a graphene epoxy resin liquid;

[0055] S20, preparing component A: adding anti-settling agent, pigments and fillers, zinc powder, and aluminum powder to the graphene epoxy resin liquid, and dispersing evenly to obtain component A;

[0056] S30, preparing component B: uniformly dissolving the curing agent in an organic solvent to obtain component B;

[0057] S40, mixing component A and component B according to a predetermined ratio to obtain ...

Embodiment 1

[0074] The preparation method of the zinc olefin heavy-duty anti-corrosion coating of the present embodiment is as follows.

[0075] 1) Put xylene and n-butanol organic solvent with a mass ratio of 7:3 into the prepreg container, turn on the stirring, adjust the speed to 150-200 rpm, add dispersant BYK-P104S, defoamer EFKA2722, flow For the leveling agent EFKA3777, after dispersing for 10-15 minutes, adjust the speed to 80-100 rpm, then slowly add graphene, continue stirring for 30-60 minutes, stop stirring, stand still, and set aside. Take the organic solvent in the same way, put it into the dissolution tank, turn on the stirring, slowly put in block epoxy resin, heat to keep the temperature of the material at 40-45°C, heat and dissolve for 2-6 hours, take a sample to observe the transparency of the epoxy resin liquid, transparent And after there are no undissolved particles, cool down to room temperature, otherwise continue to dissolve.

[0076] Measure the dissolved epoxy ...

Embodiment 2

[0092] The preparation method of the zinc olefin heavy-duty anti-corrosion coating of the present embodiment is as follows.

[0093] The steps of this embodiment are basically the same as in Example 1, with some differences being that the amount of graphene epoxy resin solution in component A is adjusted to 13%, the antirust pigment and filler is talcum powder, and the components of component A and their The content is as follows:

[0094] Graphene epoxy resin liquid: 13%

[0095] Anti-settling agent 1%

[0096] Zinc powder: 25%

[0097] Aluminum powder: 3%

[0098] Talc: 48%

[0099] Organic solvents: 10%.

[0100] The graphene epoxy resin liquid of the present embodiment comprises following composition according to mass percentage:

[0101] Graphene 8%

[0102] 75% epoxy resin liquid 85%

[0103] Auxiliary 1%

[0104] Organic solvent 6%.

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Abstract

The invention relates to a zinc-graphene heavy-duty anti-corrosive coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component B contains a curing agent; the component A contains the following components in percent by mass: 10-20% of a graphene epoxy resin solution, 0.5-2% of an anti-settling agent, 15-30% of zinc powder, 2-10% of aluminum powder, 35-50% of an antirust pigment filling material and 5-10% of an organic solvent; the graphene epoxy resin solution comprises the following components in percent by mass: 1-10% of graphene, 80-90% of an epoxy resin solution, 5-10% of an organic solvent and 1-2% of an additive. Graphene is added into the coating, so that the zinc content is reduced, zinc oxide smog generated during welding is reduced, and the coating is super-strong in water resistance and corrosion resistance. When the coating is prepared, graphene is subjected to pre-soaking treatment to be uniformly dispersed on epoxy groups of epoxy resin, so that the defect that graphene is easy to agglomerate is overcome, the excellent performance of graphene is fully played, and an intermediate with the combination of the advantages of zinc and graphene is obtained. The salt-fog resistance time of the coating prepared by the intermediate is more than 1200 hours.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to a zincene heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] At present, more anti-corrosion coatings are used, such as organic zinc-rich coatings, and epoxy resins, chlorinated rubbers, vinyl resins and polyurethane resins are commonly used as film-forming base materials. The most commonly used is epoxy zinc-rich paint, among which polyamide cured epoxy zinc-rich primer is the most widely used variety in organic zinc-rich primer. The conductivity of organic film formers in organic zinc-rich coatings is poor, and the content of zinc powder must be increased to ensure conductivity. For example, the SSPCPaint-20 of the American Steel Structure Coating Association stipulates that zinc powder of organic zinc-rich coatings accounts for no less than 77% of the dry film mass, and zinc powder of inorganic zinc-rich coatings accounts f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/10
Inventor 李志刚孔令华薛耀宗周海燕
Owner 江苏道蓬科技有限公司
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