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Preparation method of plating layer waterborne coating, plating layer waterborne coating prepared by method and use of plating layer waterborne coating, and hot-dip plated metal material

A water-based paint and hot-dip metal technology, which is applied in the direction of anti-corrosion paint, polyester paint, metal layered products, etc., can solve the problem of poor corrosion resistance of the protective film, and achieve excellent storage resistance and excellent corrosion resistance.

Inactive Publication Date: 2014-09-24
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to overcome the poor corrosion resistance defect of the protective film formed by the existing water-based paint for coating, and provide a water-based paint for coating that can form a protective film with better corrosion resistance

Method used

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  • Preparation method of plating layer waterborne coating, plating layer waterborne coating prepared by method and use of plating layer waterborne coating, and hot-dip plated metal material

Examples

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preparation example Construction

[0013] The invention provides a method for preparing a water-based coating for a coating, the method comprising uniformly mixing water, a silane coupling agent, a water-soluble silicate, a silicon oxide filler and a water-soluble film-forming resin in sequence; the silane coupling agent Including the first silane coupling agent and the second silane coupling agent, the first silane coupling agent is R-Si(OCH 3 ) 3 , R-Si(OC 2 h 5 ) 3 , R-SiCH 3 (OCH 3 ) 2 and R-SiCH 3 (OC 2 h 5 ) 2 At least one of, and each R is independently selected from NH 2 (CH 2 ) 2 NH(CH 2 ) 3 -, NH 2 (CH 2 ) 2 NHCH 2 CH(CH 3 )CH 2 -, HO(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 3 - or NH 2 (CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 3 -; The second silane coupling agent is CH 2 =C(CH 3 )COO(CH 2 ) 3 Si(OCH 3 ) 3 、CH 2 =C(CH 3 )COO(CH 2 ) 3 Si(OC 2 h 5 ) 3 、CH 2 =C(CH 3 )COO(CH 2 ) 3 SiCH 3 (OCH 3 ) 2 and CH 2 =C(CH 3 )COO(CH 2 ) 3 SiCH 3 (OC 2 h 5 ) 2 at least one o...

Embodiment 1

[0051] Mix 28 parts by weight of water and 1.6 parts by weight of silane coupling agent (composed of the first silane coupling agent and the second silane coupling agent) at a stirring speed of 1500 rpm to obtain uniform liquid A, Among them, the first silane coupling agent is NH 2 (CH 2 ) 2 NH(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-792, the second silane coupling agent is CH 2 =C(CH 3 )COO(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-570, the weight ratio of the first silane coupling agent and the second silane coupling agent is 1:0.5.

[0052]Mix all the uniform liquid A and 1 part by weight of water-soluble silicate (sodium metasilicate pentahydrate, purchased from Qingdao Darun Chemical Co., Ltd.) at a stirring speed of 1500 rpm until uniform to obtain uniform liquid B .

[0053] All the homogeneous liquid B and 0.72 parts by weight of silica filler (nano si...

Embodiment 2

[0066] Mix 25 parts by weight of water and 1.4 parts by weight of silane coupling agent (composed of the first silane coupling agent and the second silane coupling agent) at a stirring speed of 1500 rpm to obtain a homogeneous liquid A, Among them, the first silane coupling agent is NH 2 (CH 2 ) 2 NH(CH 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-793, the second silane coupling agent is CH 2 =C(CH 3 )COO(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-570, the weight ratio of the first silane coupling agent and the second silane coupling agent is 1:0.4.

[0067] All of the uniform liquid A and 1 part by weight of water-soluble silicate (potassium silicate, purchased from Baoding Runfeng Industrial Co., Ltd.) were mixed until uniform at a stirring speed of 1500 rpm to obtain a uniform liquid B.

[0068] Mix all the homogeneous liquid B and 0.6 parts by weight of silica f...

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Abstract

The invention provides a preparation method of a plating layer waterborne coating. The method comprises successively mixing evenly water, silane coupling agents, water-soluble silicate, a silica filler and water-soluble film-forming resin. The invention also provides the plating layer waterborne coating prepared according to the preparation method and a use thereof in preparation of metal materials. The invention further provides a hot-dip plated metal material which comprises a hot-dip plated metal substrate and a coating layer adhering onto the hot-dip plated metal substrate, wherein the coating layer is a cured product of the plating layer waterborne coating. A protective film formed by the plating layer waterborne coating provided by the invention is quite excellent in corrosion resistance. In addition, the plating layer waterborne coating provided by the invention is quite excellent in storage resistance, and can be stored for 180 days at room temperature after completion of preparation but does not generate obvious character changes and performance reduction.

Description

technical field [0001] The invention relates to the field of metal protection, in particular to a method for preparing a water-based coating for coating, the water-based coating for coating obtained by the preparation method, the application of the water-based coating for coating and a hot-dip metal material. Background technique [0002] Hot-dip metal materials, including hot-dip galvanized metal materials and hot-dip galvanized metal materials, in order to prevent corrosion, a layer of water-based coating is applied to the surface of the hot-dip metal material to form a protective film. Therefore, the performance of the coating water-based coating is very important for the anti-corrosion of hot-dip metal materials. [0003] For example, CN101608306A discloses a passivation solution, which also belongs to a water-based coating for plating, and is characterized in that the passivation solution is an aqueous solution containing a water-soluble molybdenum compound, boric acid,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D125/14C09D163/00C09D175/04C09D133/04C09D133/00C09D127/12C09D7/12C09D5/08B32B15/08
Inventor 许哲锋李纪仁李南黄平生李光跃
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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