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A kind of graphene-modified water-based cold spray zinc coating and preparation method thereof

A graphene modification, cold spray zinc technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problem of high VOC content, achieve beautiful appearance, save painting costs, and overcome difficult to handle problems. Effect

Active Publication Date: 2019-05-14
陕西宝塔山油漆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of high VOC content in the construction of solvent-based cold-sprayed zinc coatings, the present invention provides an environmentally friendly water-based cold-sprayed zinc long-term anti-corrosion coating

Method used

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  • A kind of graphene-modified water-based cold spray zinc coating and preparation method thereof
  • A kind of graphene-modified water-based cold spray zinc coating and preparation method thereof
  • A kind of graphene-modified water-based cold spray zinc coating and preparation method thereof

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preparation example Construction

[0045] The preparation method of the graphene-modified water-based cold spray zinc paint of the present invention may further comprise the steps:

[0046] 1) Water-based resin with a mass ratio of 10-25%, 0.2-0.6% defoamer, 0.4-1.2% wetting and dispersing agent, 0.2-0.6% substrate wetting agent, 0.2-0.6% antifreeze agent, 0.2-0.6% antifungal agent, 0.2-0.6% anti-flash rust agent, 0.4-1.0% anti-settling agent, 0.4-1.0% pH regulator and 65-80% deionized water, at 600r Stir for 30min at a stirring speed of / min to disperse evenly;

[0047] 2) After adding 5-15% graphene slurry and dispersing at high speed for 30-60 minutes, a graphene-modified water-based cold-spray zinc coating A-component coating liquid is obtained;

[0048] 3) Use polysilane-modified zinc powder as component B, and slowly add component B to component A according to the mass ratio of component A and component B at a ratio of 1:4 to 1:5. Stir at a high speed for 30 min at a stirring speed of 1 / min, disperse ev...

Embodiment 1

[0051] (1) Add 10% water-based polyurethane dispersion Neorez R-961 (solid content 40%), 0.6% TEGO810, 0.8% TEGO755, 0.2% TEGO4100, 0.6% ethylene glycol, 0.2% K10N, 0.6% to the batching tank 1.0% fumed silica A200, 1.0% g DMEA and 80% deionized water, stirred at 600r / min for 30min, dispersed evenly;

[0052] (2) Weigh 5% graphene slurry and disperse it in (1) for 30 minutes at a high speed of 1500r / min to obtain component A;

[0053] (3) The 600-mesh Super Fine II water-based high-purity spherical zinc powder (B component) whose surface is treated with silica fine powder according to the mass ratio of A component and B component is 1:4 is slowly mixed under mechanical stirring. Add component A and stir until there are no particles;

[0054] (4) Spray the prepared graphene-modified water-based cold-sprayed zinc paint onto the test board, and perform a performance test on the paint film after curing in a constant temperature and humidity chamber for one week. The results are s...

Embodiment 2

[0056] (1) Add 20% water-based polyurethane dispersion Neorez R-961 (solid content 50%), 0.2% TEGO901w, 1.2% TEGO750, 0.6% TEGO4100, 0.5% propylene glycol, 0.6% TROY701S, 0.5% to the batching tank 0.4% fumed silica R805, 1.0% triethylamine and 65% deionized water, stirred at 600r / min for 30min, dispersed evenly;

[0057] (2) Weigh 10% graphene slurry and disperse it in (1) for 30 minutes at a high speed of 1500r / min to obtain component A;

[0058] (3) According to the mass ratio of component A and component B of 1:5, the water-based high-purity spherical zinc powder and scaly zinc powder (spherical zinc powder: scaly zinc powder) treated with 1000 mesh silica powder Powder=99:1) (Component B) slowly add component A under mechanical stirring, and stir until there are no particles;

[0059] (4) Spray the prepared graphene-modified water-based cold-sprayed zinc paint onto the test board, and perform a performance test on the paint film after curing in a constant temperature and...

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Abstract

The invention discloses a graphene-modified waterborne cold spraying zinc coating and a preparation method thereof. The coating comprises a raw material prepared by mixing a component A and a component B according to the mass ratio of 1:4-1:5, wherein the component A of a coating liquid contains waterborne resin, graphene slurry and a mixed additive, and the component B is surface-treated zinc powder. The preparation method of the graphene-modified waterborne cold spraying zinc coating comprises: (1) adding water, the waterborne resin, the additive and other additives into a stirring kettle for uniform stirring, and then, carrying out high-speed dispersion after adding the graphene slurry to obtain a coating liquid of the component A of the graphene-modified waterborne cold spraying zinc coating; and (2) adding the component B, namely the surface-treated zinc powder into the component A, and uniformly stirring the components A and B. By using the graphene-modified waterborne cold spraying zinc coating obtained by using the preparation method, the effect on protecting the cathode of a zinc-enriched coating can be greatly improved, furthermore, the protection years of the waterborne cold spraying zinc are prolonged, the VOC content is reduced, the drying time is greatly shortened, and the corrosion resistance, impact resistance and adhesive force of the graphene-modified waterborne cold spraying zinc coating are improved to the relatively great extent; and the graphene-modified waterborne cold spraying zinc coating can be used as a metal protection primer under a heavy corrosion protection action.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to an environment-friendly graphene-modified water-based cold spray zinc coating and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional (2D) material with a new single-layer sheet structure composed of carbon atoms. It is a hexagonal honeycomb lattice plane film composed of carbon atoms with sp2 hybrid orbitals. Graphene has high electrical conductivity and high thermal conductivity, and has very attractive potential prospects in functional coatings such as electrical conductivity, anti-corrosion, flame retardant, thermal conductivity and high strength. [0003] Cold spray zinc coating is a new single-component organic zinc-rich coating with a zinc content of up to 95%. The potential difference between the coating and the steel substrate is as high as 1000mV or more. It can be used as a single layer of metal corrosion protection layer or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/10C09D7/61
CPCC08K3/04C09D5/106C09D7/61C09D175/04
Inventor 孙佳佳刘娟荣
Owner 陕西宝塔山油漆股份有限公司
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