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Graphene heavy anti-corrosion coating and preparation method thereof

A graphene and heavy-duty anti-corrosion technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as insufficient anti-corrosion performance, and achieve the effect of anti-corrosion performance improvement and efficient shielding effect

Inactive Publication Date: 2018-12-14
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of relatively insufficient anticorrosion performance of existing marine engineering anticorrosion coatings, and propose a graphene heavy-duty anticorrosion coating with high anticorrosion performance and its preparation method, which can significantly improve the anticorrosion performance of coatings

Method used

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  • Graphene heavy anti-corrosion coating and preparation method thereof
  • Graphene heavy anti-corrosion coating and preparation method thereof
  • Graphene heavy anti-corrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of self-synthesized polyurethane modified epoxy resin, hydroxyl-terminated polyether is selected from Shandong Bluestar Dongda Chemical Co., Ltd. product DL-2000D, diphenylmethane diisocyanate and E-51 epoxy resin according to the ratio of 1:2.2:5 The molar ratio is polymerized step by step, and the synthesis process is as follows: add all N220 to the reactor, vacuum dehydrate at 120°C for 2 hours; add all diphenylmethane diisocyanate, and add T-9 which accounts for 0.12‰ (weight ratio) of the total resin Catalyst continues to react 2h under high-speed stirring at 75 ℃; Add all E-51 epoxy resins, and the xylene that accounts for 30% of resin gross weight, react 2h under high-speed stirring at 75 ℃; Add and account for resin total amount 0.42‰ ( weight ratio) of the T-9 catalyst, continued to react for 2h under stirring at 75°C, and finally obtained a self-synthesized polyurethane modified epoxy resin with an epoxy equivalent of 642 and a solid content of 70%....

Embodiment 2

[0034] The self-synthesized polyurethane-modified epoxy resin prepared in Example 1 was adopted.

[0035] Component A of graphene heavy-duty anticorrosion coating (parts by weight): 13 parts of E-20 epoxy resin, 3 parts of self-synthesized polyurethane modified epoxy resin, 8 parts of xylene, 8 parts of n-butanol, 0.3 part of modified graphene , 43 parts of mica iron oxide ash, 13 parts of 809 anti-rust pigment, 8 parts of mica powder, 1.3 parts of titanium dioxide, 0.36 parts of wetting and dispersing agent TEGO 628, 0.04 parts of defoamer BYK-085, 2 parts of Bengel 434 organic bentonite.

[0036] Component B of graphene heavy-duty anti-corrosion coating (parts by weight): 60 parts of polyamide curing agent SY-H115, 10 parts of xylene, 8 parts of n-butanol, and 6 parts of accelerator DMP-30.

[0037] Graphene heavy-duty anti-corrosion coating is prepared according to the following steps:

[0038] First, add modified graphene and part of xylene into a high-speed stirring tank, ...

Embodiment 3

[0042] The self-synthesized polyurethane-modified epoxy resin prepared in Example 1 was adopted.

[0043] Component A of graphene heavy-duty anticorrosion coating (parts by weight): 10 parts of E-20 epoxy resin, 5 parts of self-synthesized polyurethane modified epoxy resin, 6 parts of xylene, 7.5 parts of n-butanol, 0.5 part of modified graphene , 50 parts of mica iron oxide red, 11 parts of 809 antirust pigment, 5.3 parts of mica powder, 1.2 parts of titanium dioxide, 0.47 parts of wetting and dispersing agent AFCONA-5066, 0.03 parts of defoamer TEGO Airex 9000, 3 parts of Bengel 434 organic bentonite.

[0044] Component B of graphene heavy-duty anti-corrosion coating (parts by weight): 55 parts of polyamide curing agent Versamid 115, 25 parts of xylene, 12 parts of n-butanol, and 8 parts of accelerator DMP-30.

[0045] Graphene heavy-duty anti-corrosion coating is prepared according to the following steps:

[0046] First, add the modified graphene and part of xylene into a ...

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Abstract

The invention relates to an anti-corrosion coating, and particularly relates to a graphene heavy anti-corrosion coating and preparation method thereof. The coating comprises a component A and a component B, wherein the component A includes, by weight, 10-15 parts of epoxy resin, 2-5 parts of polyurethane modified epoxy resin, 10-20 parts of a solvent, 0.05-0.5 parts of modified graphene, 45-65 parts of an anti-rust pigment, 5-10 parts of mica powder, 1-2 parts of titanium dioxide, 0.3-0.6 parts of a wetting dispersant, 0.03-0.06 parts of a defoamer, and 1-3 parts of organic bentonite; the component B includes, by weight, 55-70 parts of polyamide resin, 20-40 parts of a solvent, and 4-8 parts of an accelerant. Compared with the prior art, the graphene heavy anti-corrosion coating is prepared on the basis that the modified graphene is pre-dispersed in the solvent to make slurry, so that the graphene is fully dispersed and expanded in the coating to form a layered staggered structure. Thecoating has great shielding effect and is good in anti-corrosion effect.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to a graphene heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] Steel is widely used in various industries. Corrosion is the most critical issue affecting its use. Corrosion causes steel loss of more than 60 million tons every year in my country, resulting in a large waste of resources. Anti-corrosion coatings are currently the most commonly used and most effective steel corrosion protection measures. Common anti-corrosion coatings are mainly inorganic zinc-rich, epoxy zinc-rich, epoxy cloud iron, chlorinated rubber iron red and other anti-corrosion coatings. These anti-corrosion coatings It largely solves the corrosion protection problem of steel, but has a short service life in the harsh marine environment. [0003] The steel structure in the marine environment has been subjected to seawater immersion, salt spray corrosion, alternating c...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/62C09D7/65
CPCC09D163/00C08K2003/2241C09D5/08C09D7/61C09D7/62C09D7/65C09D7/70C08L75/08C08K13/06C08K3/042C08K3/34C08K3/22C08K3/346
Inventor 王同良崔显林张卫国王志超张学卿冷晓飞成建强陈从棕姜秀杰左娟娟
Owner MARINE CHEM RES INST
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