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Water-based coating material for galvanized steel plate, and preparation method thereof

A water-based paint, galvanized steel technology, applied in anti-corrosion paint, coating and other directions, can solve the problem of easy absorption and crystallization of paint, and achieve the effect of ensuring performance, improving weather resistance, and not easy to peel

Inactive Publication Date: 2021-03-12
常州天瑞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some people also use potassium silicate inorganic zinc-rich paint to solve the problem of flash rust, because it contains potassium silicate to solve the problem of flash rust, but it is also because of the existence of potassium silicate that the paint has the problem of easy absorption of crystallization

Method used

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  • Water-based coating material for galvanized steel plate, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A kind of water-based coating for galvanized steel sheet, comprises A component, B component and C component, and described A component is made of 15 parts by weight methyltrimethoxysilane, 1.1 parts by weight of white carbon black, 1.2 parts by weight It consists of sodium stearate; the B component consists of 20 parts by weight of cationic modified potassium silicate resin, 15 parts by weight of titanium dioxide, 3 parts by weight of kaolin, 3 parts by weight of talc, 0.5 parts by weight of silicone resin, 0.5 parts by weight of polystyrene Ether modified polysiloxane, 1 weight part ethylene glycol butyl ether, 0.5 weight part sodium dodecylbenzene sulfonate, 3 weight parts photocatalyst, 20 weight parts water; C component is made up of 1 weight part organic acid and 1 part by weight of xylylguanidine.

[0024] The preparation method of this aqueous paint, comprises the steps:

[0025] (1) Preparation of component B: Cationic modified potassium silicate resin, titani...

Embodiment 2

[0028] A kind of water-based coating for galvanized steel sheet, comprises A component, B component and C component, and described A component is made of 17 parts by weight methyltrimethoxysilane, 1.3 parts by weight of white carbon black, 1.4 parts by weight Potassium stearate is composed; The B component consists of 22 parts by weight of cationic modified potassium silicate resin, 18 parts by weight of titanium dioxide, 6 parts by weight of talcum powder, 5 parts by weight of mica powder, 0.7 parts by weight of acrylate copolymer, 0.6 parts by weight of Parts by weight of organosiloxane, 1.4 parts by weight of lauryl alcohol ester, 0.7 parts by weight of cetyltrimethylammonium bromide, 5 parts by weight of photocatalyst, and 23 parts by weight of water; Component C consists of 1.5 parts by weight of organic acid and 1.5 parts by weight xylylguanidine composition.

[0029] The preparation method of this aqueous paint, comprises the steps:

[0030] (1) Preparation of componen...

Embodiment 3

[0033] A kind of water-based coating for galvanized steel sheet, comprises A component, B component and C component, and described A component is made of 18 parts by weight methyltrimethoxysilane, 1.7 parts by weight of white carbon black, 1.7 parts by weight It consists of calcium stearate; the B component consists of 24 parts by weight of cationic modified potassium silicate resin, 22 parts by weight of titanium dioxide, 8 parts by weight of kaolin, 6 parts by weight of zinc oxide, 0.8 parts by weight of polydimethylsiloxane , 0.8 parts by weight polyether, 1.7 parts by weight diethylene glycol butyl ether, 0.9 parts by weight ethyl acetate, 7 parts by weight photocatalyst, 27 parts by weight water; C component is made up of 1.8 parts by weight organic acid and 1.8 parts by weight xylene base guanidine composition.

[0034] The preparation method of this aqueous paint, comprises the steps:

[0035] (1) Preparation of B component: cationic modified potassium silicate resin, ...

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Abstract

The invention discloses a water-based coating material for a galvanized steel plate, and a preparation method thereof. The water-based coating material comprises a component A, a component B and a component C, wherein the component A is composed of 15-20 parts by weight of methyltrimethoxysilane, 1-2 parts by weight of white carbon black and 1-2 parts by weight of stearate, the component B is prepared from 20-25 parts by weight of cation modified potassium silicate resin, 15-25 parts by weight of pigment, 6-16 parts by weight of filler, 0.5-1 part by weight of leveling agent, 0.5-1 part by weight of defoamer, 1-2 parts by weight of a film forming aid, 0.5-1 part by weight of dispersing agent, 3-8 parts by weight of photocatalyst and 20-30 parts by weight of water, and the component C is prepared from the following components in parts by weight: 1-2 parts of organic acid and 1-2 parts of xylylguanidine. According to the invention, by adding potassium silicate into the water-based coating material, the problem of flash rust of the existing water-based coating material for galvanized steel plates is solved, so that the coating material has favorable impact resistance; and the preparedwater-based coating material has excellent properties by further preferably selecting other components and reasonably compounding.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based coating for galvanized steel sheets and a preparation method thereof. Background technique [0002] Galvanized steel sheet is to prevent the surface of the steel sheet from corrosion and prolong its service life. A layer of metal zinc is coated on the surface of the steel sheet. This galvanized thin steel sheet is called galvanized sheet. Galvanizing is an economical and effective anti-corrosion method that is often used. Hot-dip galvanized sheets are mainly used in construction, home appliances, automobiles, machinery, electronics, light industry and other industries. However, the friction between the pure zinc-coated steel plate and the mold is large during the forming process, which affects the formability of the steel plate. Water-based coatings are often used to improve the formability of galvanized steel sheets, but the existing water-based coatings commonl...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/08C09D7/61C09D7/63C09D7/65
CPCC08G77/04C08G77/06C09D4/00C09D5/08C09D183/04C09D7/61C09D7/63C09D7/65
Inventor 邓科洹孙大东
Owner 常州天瑞新材料科技有限公司
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