Water-based low-surface-treatment anticorrosive paint and preparation method and application thereof
A technology of low surface treatment and anti-corrosion coatings, applied in the field of coatings, can solve the problem that the one-time film thickness of water-based coatings is difficult to meet the high solid content standard, and achieve the effect of realizing emissions, meeting application requirements, and extremely low emissions
Inactive Publication Date: 2021-01-12
GUANGZHOU JOINTAS CHEM +1
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Problems solved by technology
However, the solid content and one-time film thickness of water-based coatings are difficult to reach the standard of high solid content
Although the water-based epoxy micaceous iron coating provided by CN110218503A has low VOCs, its solid content is only about 80%, and the dry film thickness of one coating is only about 120 μm
Method used
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[0039] The technical solutions of the present invention will be further described below in conjunction with specific examples.
[0040] The present invention provides a water-based anti-corrosion coating, including A component and B component, and the raw materials and raw material mass fractions of the A component and B component are shown in Table 1.
[0041] Table 1. Raw materials and raw material mass parts
[0042]
[0043] Wherein, the water-based epoxy emulsion is that the solid content is greater than or equal to 70%, the epoxy equivalent is between 450~550, the viscosity is less than 500cP, and does not contain any solvent; the antirust pigment is Haibo's ZPA (containing zinc phosphate, embodiment 1 ), ZPA, RZ (the ratio is 9:1, RZ is an organic antirust pigment, containing zinc of 5-nitroisophthalic acid, embodiment 2), CAPP (containing hydrated aluminum calcium polyphosphate, embodiment 3 and 4), the pigment and filler are mixed with titanium dioxide, iron oxide...
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Abstract
The invention discloses a water-based low-surface-treatment anticorrosive paint and a preparation method and application thereof. The water-based anticorrosive paint comprises a component A and a component B, the component A comprises the following raw materials: a water-based epoxy emulsion, a pigment filler and an auxiliary agent, and the component B comprises a water-based amine curing agent; the solid content of the water-based epoxy emulsion is greater than or equal to 70%, and the viscosity of the water-based epoxy emulsion is less than 500cP; the solid content of the water-based amine curing agent is greater than or equal to 75%. According to the invention, the water-based epoxy emulsion with high solid content and low viscosity and the water-based amine curing agent with high solidcontent are compounded so that the water-based epoxy coating reaches the ultrahigh solid content level required by the ultrahigh solid content epoxy coating, and meanwhile, the thickness of a dry film coated once is remarkably increased.
Description
technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based anticorrosion coating with low surface treatment and a preparation method and application thereof. Background technique [0002] Low surface treatment coatings have a wide range of applications in the field of anti-corrosion, especially when the substrate is not well-treated, contains oil, rust and other unclean substrate surfaces, and ordinary anti-corrosion coatings are difficult to meet the requirements, it is more widely used. Most of the existing low surface treatment coatings are oily coatings, which are harmful to the environment and human body. Therefore, it is necessary to develop an environmentally friendly and healthy coating to replace the traditional oily low surface treatment coatings. [0003] High-solid coatings have become one of the development directions of environmentally friendly coatings due to their lower VOCs content. High-solid...
Claims
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IPC IPC(8): C09D163/00C09D5/08C09D7/20
CPCC08K2003/327C08K2003/328C09D5/08C09D163/00C09D7/20C08K13/02C08K13/06C08K3/32C08K3/34C08K5/32
Inventor 刘瑞清张博晓
Owner GUANGZHOU JOINTAS CHEM