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An epoxy zinc-rich coating and coating technology, applied in the field of coatings, can solve the problems of corrosion resistance, chemical resistance and solvent resistance, the impact resistance of coatings, general adhesion and other problems, to achieve excellent adhesion, The effect of excellent anti-rust performance and good film corrosion resistance
Inactive Publication Date: 2012-04-18
TIANCHANG JULONG TRAVEL PAINT
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The curing agent is a fat-modified or polyamide-modified water-based epoxy curing agent. The impact resistance and adhesion of the prepared coating are general, and the corrosion resistance, chemical resistance and solvent resistance are not mentioned.
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Embodiment 1
[0032] In this embodiment, to prepare the epoxy zinc-rich coating, in parts by weight, component A contains:
[0033] 75% E-20 epoxy resin 5
[0034] Zinc powder 80
[0035] Methyl isobutyl ketone 23,
[0036] The second component contains:
[0037] NX-2018 curing agent 5
[0038] Xylene 60,
[0039] The mass ratio of component A to component B is 2:1.
Embodiment 2
[0041] In this embodiment, to prepare the epoxy zinc-rich coating, in parts by weight, component A contains:
[0042] 75% E-20 epoxy resin 10
[0043] Zinc powder 60
[0044] Xylene 40,
[0045] The second component contains:
[0046] NX-2018 curing agent 22
[0047] N-butanol 74,
[0048] The mass ratio of component A to component B is 5:1.
Embodiment 3
[0050] In this embodiment, to prepare the epoxy zinc-rich coating, in parts by weight, component A contains:
[0051] 75% E-20 epoxy resin 20
[0052] Zinc powder 90
[0053] N-butanol 15,
[0054] The second component contains:
[0055] NX-2018 curing agent 15
[0056] Xylene 90,
[0057] The mass ratio of component A to component B is 8:1.
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Abstract
The invention relates to epoxy zinc-rich paint. The epoxy zinc-rich paint is characterized in that epoxy resin as a base material, cashew oil polyamide as a curing agent, ultrafine zinc powder as a main antirust pigment, and certain amounts of auxiliary agents and solvents are mixed according to a certain ratio and are prepared into the epoxy zinc-rich paint. The epoxy zinc-rich paint provided by the invention is suitable for being used by a dip-coating method. A coated epoxy zinc-rich paint film has excellent corrosion resistance, chemical resistance and solvent resistance.
Description
Technical field [0001] The invention relates to a coating, in particular to an epoxy zinc-rich coating suitable for dip coating. Background technique [0002] In the anti-corrosion coating system of steel structure, the role of zinc-rich primer is very important. It must have good adhesion to steel and can play an excellent anti-rust effect. Epoxy zinc-rich primer is one of the most commonly used primers in my country's heavy anti-corrosion coating systems. Its anti-corrosion effect is to protect the steel matrix by sacrificing zinc powder by corrosion in a corrosive environment. The anti-corrosion mechanism of epoxy zinc-rich primer can be summarized into two points: [0003] One of the epoxy zinc-rich primers plays a role of electrochemical protection. Because zinc is more active than iron and easily loses electrons, in the early stage of corrosion, zinc powder and steel substrate form a galvanic cell. The electrode potential of zinc is negative than that of iron. Zinc is the ...
Claims
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Application Information
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