Two-component water-based anticorrosive paint as well as preparation method and application thereof

An anti-corrosion coating, two-component technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as sagging, and achieve the effect of solving thick coating sagging, avoiding production safety and construction environmental protection

Active Publication Date: 2021-10-29
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thicker the sprayed film, the easier it is to sag

Method used

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  • Two-component water-based anticorrosive paint as well as preparation method and application thereof
  • Two-component water-based anticorrosive paint as well as preparation method and application thereof
  • Two-component water-based anticorrosive paint as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A two-component water-based anti-corrosion coating, comprising the preparation raw materials of mass parts as described in the following table:

[0080] Table 1. The composition of raw materials for the preparation of two-component water-based anticorrosion coatings

[0081]

[0082]

[0083] The preparation method of two-component water-based anticorrosion coating comprises the steps:

[0084] (1) Pre-disperse and stir all the deionized water, dispersant, defoamer, anti-sedimentation thixotropic agent and all pigments and fillers evenly, and move to a sand mill to grind to obtain a water-based color paste with a fineness of ≤35 μm.

[0085] (2) Add water-based epoxy dispersion resin into the stirring tank, then add wetting agent, leveling agent, anti-flash corrosion agent, adhesion enhancer in turn under stirring conditions, and finally add the water-based color paste of step (1) , after stirring evenly, obtain the first component by filtering with a 100-mesh fi...

Embodiment 2

[0088] A two-component water-based anti-corrosion coating, comprising the preparation raw materials of mass parts as described in the following table:

[0089] Table 2. The composition of raw materials for the preparation of two-component water-based anti-corrosion coatings

[0090]

[0091]

[0092] The preparation method of the two-component water-based anti-corrosion coating of this embodiment is the same as that of Embodiment 1.

[0093] The viscosity of component A and component B of the two-component water-based anti-corrosion coating and the viscosity after the two components are mixed in proportion is tested, and the high-pressure plunger pump is used to supply the paint 2K automatic deployment spraying system (such as figure 1 , figure 1 The main agent pump is used for feeding component A, the pump for component B is used for feeding component B, and the cleaning pump is used for cleaning the spraying system) for one-time coating on the surface of aluminum subs...

Embodiment 3

[0101]Water-based epoxy dispersion resins with different epoxy equivalents are used to make two-component water-based anti-corrosion coatings, and a high-pressure plunger pump is used to supply paint with a 2K automatic deployment spraying system for one-time coating on the surface of carbon steel substrates, and baking (45 ° C) ×40min), the performance of the paint film was tested, and the results are shown in Table 4 below.

[0102] Table 4. Effect of different waterborne epoxy dispersion resins on the paint film

[0103]

[0104] In Table 4, the main difference between serial numbers 1 to 5 is that the water-based epoxy dispersion resins are different, and the specific raw material compositions are as follows:

[0105] Serial number 1:

[0106] Component A: water-based epoxy dispersion resin 6520: 42 parts, dispersant Tego757w: 1.5 parts, environmental protection anti-rust pigment zinc orthophosphate ZMP: 10 parts, iron oxide red 190: 10 parts, barium sulfate: 18 parts;...

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Abstract

The invention discloses two-component water-based anticorrosive paint as well as a preparation method and application thereof. The two-component water-based anticorrosive paint comprises a component A and a component B; the component A comprises the following component: waterborne epoxy dispersion resin; the component B comprises a curing agent; the rotational viscosity of the component A and the rotational viscosity of the component B are not higher than 5000 mPa.s (15-30 DEG C, 60 r/min); the thixotropic value of the mixture of the component A and the component B is 2.5-4.5. The two-component water-based anticorrosive paint is a water-based epoxy dispersion resin system; when the rotary viscosity of the component A and the rotary viscosity of the component B are both lower than 5000 mPa.s, it can be guaranteed that spraying equipment can work normally when the spraying equipment is adopted for spraying; and based on the control of the viscosity and thixotropic value of the component A and the component B which are mixed, sagging does not occur when the thickness is 150 microns or above.

Description

technical field [0001] The invention relates to the technical field of industrial coatings and coating technology, in particular to a two-component water-based anticorrosion coating and its preparation method and application. Background technique [0002] With the development of the coating industry, coating equipment is also developing towards mechanical automation and continuity. Choosing advanced painting equipment can improve painting efficiency, improve painting quality, save painting cost, improve construction environment and reduce labor intensity. High-pressure plunger pump paint supply and spraying equipment has the advantages of high production efficiency, fast spraying speed, less paint mist during operation, and good painting quality. It is especially suitable for painting large areas and large parts, and is widely used in shipbuilding, containers, steel Structural, building interior and exterior walls and large pipelines and other industries. [0003] The two-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D163/00C09D7/47C09D7/45C09D7/43C09D7/65
CPCC09D5/08C09D163/00C09D7/47C09D7/45C09D7/43C09D7/65C08L83/12C08L75/08C08K3/346C08K7/26
Inventor 姚煌谢唯王荣芳余国强许奕祥
Owner GUANGZHOU KINTE IND
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