Water-based acrylic acid primer-topcoat coating applicable to rusty steel structure and to renovation coating of steel structure as well as preparation method and application method of water-based acrylic acid primer-topcoat coating

A water-based acrylic and steel structure technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of difficult processing and high construction conditions, and achieve the effects of excellent coating performance, super elimination ability, and rust elimination.

Pending Publication Date: 2021-11-16
西北永新涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of water-based acrylic bottom and surface all-in-one coating suitable for rusty steel structure and steel stru

Method used

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  • Water-based acrylic acid primer-topcoat coating applicable to rusty steel structure and to renovation coating of steel structure as well as preparation method and application method of water-based acrylic acid primer-topcoat coating
  • Water-based acrylic acid primer-topcoat coating applicable to rusty steel structure and to renovation coating of steel structure as well as preparation method and application method of water-based acrylic acid primer-topcoat coating
  • Water-based acrylic acid primer-topcoat coating applicable to rusty steel structure and to renovation coating of steel structure as well as preparation method and application method of water-based acrylic acid primer-topcoat coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Table 1 shows the raw material composition of a water-based acrylic primer (iron red) that is suitable for rusty steel structure and steel structure renovation coating.

[0035]

[0036] The preparation method of the present embodiment comprises the following steps:

[0037] A. First, take 10% deionized water of the formula amount and put it into the dispersing basin, and disperse at a speed of 700 r / min. At the same time, add the polyether siloxane copolymer defoamer, sericite, modified Nylon powder, precipitated barium sulfate, pigments, rheological additives, and then adjust the dispersion speed to 1500 r / min, and disperse for 20 minutes to obtain a dispersion mixture for later use;

[0038] B. Pour the dispersion mixture obtained in step A into a sand mill for grinding, control its fineness ≤ 35 μm, and temperature ≤ 50 ° C to obtain a grinding slurry, and then pour out the qualified grinding slurry from the sand mill ,spare;

[0039] C. Take the weakly acidic ...

Embodiment 2

[0041] Table 2 shows the raw material composition of a water-based acrylic primer (dark gray) that is suitable for rusty steel structure and steel structure renovation coating.

[0042]

[0043] The preparation method of the present embodiment comprises the following steps:

[0044] A. First, take 8% deionized water of the formula and put it into the dispersion basin, and disperse at a speed of 500 r / min. At the same time, add the polyether siloxane copolymer defoamer, sericite, modified Nylon powder, precipitated barium sulfate, pigments, rheological additives, and then adjust the dispersion speed to 1200 r / min, disperse for 30 minutes, and obtain a dispersion mixture for later use;

[0045] B. Pour the dispersion mixture obtained in step A into a sand mill for grinding, control its fineness ≤ 35 μm, and temperature ≤ 50 ° C to obtain a grinding slurry, and then pour out the qualified grinding slurry from the sand mill ,spare;

[0046] C. Take the weakly acidic acrylic c...

Embodiment 3

[0048] The raw material composition of a water-based acrylic primer (black) suitable for rusty steel structure and steel structure renovation coating is shown in Table 3.

[0049]

[0050] The preparation method of the present embodiment comprises the following steps:

[0051] A. First take 12% deionized water and put it into the dispersion basin, and disperse at a speed of 600 r / min. At the same time, add the formula amount of polyether siloxane copolymer defoamer, sericite, and modified nylon powder in sequence. , Precipitate barium sulfate, pigments, rheological additives, then adjust the dispersion speed to 1400 r / min, and disperse for 15 minutes to obtain a dispersion mixture for later use;

[0052] B. Pour the dispersion mixture obtained in step A into a sand mill for grinding, control its fineness ≤ 35 μm, and temperature ≤ 50 ° C to obtain a grinding slurry, and then pour out the qualified grinding slurry from the sand mill ,spare;

[0053] C. Take the weakly acid...

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Abstract

The invention discloses a water-based acrylic primer-topcoat coating applicable to a rusted steel structure and to renovation coating of a steel structure as well as a preparation method and an application method of the water-based acrylic primer-topcoat coating, belonging to the field of coatings. The invention solves the problem that treatment of rusty steel structures and renovation coating of steel structures are difficult. The water-based acrylic primer-topcoat coating comprises water, sericite, modified nylon powder, precipitated barium sulphate, a pigment, a dispersant, a polyether siloxane copolymer defoaming agent, a weakly acidic acrylic acid copolymer emulsion, a rheological aid, a base material wetting agent, a high-alcohol defoaming agent, a coalescing agent and a cosolvent. The preparation method comprises the following steps: dispersing a part of water, the dispersing agent, the polyether siloxane copolymer defoaming agent, the sericite, the modified nylon powder, the precipitated barium sulfate, the pigment and the rheological aid, carrying out grinding, adding the rest raw materials, performing dispersing, and carrying out sieving with tiffany. The application method comprises the step that the coating directly coats the surface of the rusty steel structure or is directly used for renovating and recoating of an aged coating of the steel structures. The coating provided by the invention can perfectly convert corrosion, has good compatibility with different types of old paint films, and has good adhesion after being combined with the old paint films.

Description

technical field [0001] The invention belongs to the field of water-based industrial coatings, and in particular relates to a water-based acrylic bottom-surface-in-one coating suitable for renovation coating of rusted steel structures and steel structures, as well as a preparation method and an application method thereof. Background technique [0002] Due to the advantages of light weight, high seismic performance, high plasticity, convenient construction and short construction period, steel structures are widely used in large gymnasiums, exhibition centers, business centers, industrial plants, warehouses and other buildings. In recent years, with the rapid development of my country's infrastructure, the number of buildings with steel structures as load-bearing components has increased rapidly. Therefore, steel structures are playing an increasingly important role in engineering construction. At the same time, people are facing more severe corrosion problems of steel structu...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/08C09D7/65C09D7/63C09D7/61
CPCC09D133/00C09D5/08C09D7/65C09D7/63C09D7/70C09D7/61C08L2205/035C08L2205/16C08L77/00C08L83/12C08L97/02C08K3/34C08K5/05
Inventor 姚改宁杜愈拓宋小莉雍涛强富彬罗维君景文科
Owner 西北永新涂料有限公司
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