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Coating liquid and preparation method and use thereof, and hot-dip plated metal material

A technology of hot-dip metal and coating liquid, which is applied in the direction of anti-corrosion coatings, metal layered products, chemical instruments and methods, etc., can solve the problems of poor corrosion resistance of the protective film, and achieve excellent storage resistance and excellent corrosion resistance. Effect

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 coating liquid, and provide a coating liquid capable of forming a passivation film with good corrosion resistance

Method used

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  • Coating liquid and preparation method and use thereof, and hot-dip plated metal material

Examples

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Effect test

preparation example Construction

[0013] The invention provides a method for preparing a coating liquid, which comprises mixing water, a silane coupling agent, a water-soluble silicate, an accelerator, a silicon oxide filler, and a water-soluble film-forming resin in sequence; the silane coupling The coupling agent contains the first silane coupling agent and the second silane coupling agent; wherein the first silane coupling agent is CH 2 =CHSi(OCH 3 ) 3 、CH 2 =CHSi(OC 2 h 5 ) 3 、CH 2 =CHSiCH 3 (OCH 3 ) 2 、CH 2 =CHSiCH 3 (OC 2 h 5 ) 2 and CH 2 =CHSi(OCH 2 CH 2 OCH 3 ) 3 At least one of, 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 of them; the accelerator is thiourea and / or urea.

[0014] Wherein, in detail, the method includes: (1) uniformly mixing water and the silane coupling a...

Embodiment 1

[0053] 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 CH 2 =CHSi(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-171, 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 1.5:1.

[0054] 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 .

[0055] All of the homogeneous liquid B and 0.6 parts by weight of accelerator (thiourea) were mixed until un...

Embodiment 2

[0069] 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 CH 2 =CHSi(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-151, 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 1.4:1.

[0070] 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.

[0071] All of the homogeneous liquid B and 0.5 parts by weight of accelerator (an equal weight mix...

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Abstract

The invention provides a preparation method of a coating liquid. The method comprises successively mixing evenly water, silane coupling agents, water-soluble silicate, an accelerant, a silica filler and water-soluble film-forming resin. The invention also provides the coating liquid 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 coating liquid. A protective film formed by the coating liquid provided by the invention is quite excellent in corrosion resistance. In addition, the coating liquid 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 preparation method of a coating liquid, a coating liquid obtained by the preparation method, an application of the coating liquid 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 coating solution is applied on the surface of the hot-dip metal materials to form a passivation film. Therefore, the performance of the coating solution 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 coating solution, and is characterized in that the passivation solution is an aqueous solution containing water-soluble molybdenum compounds, boric acid, water-soluble organic matter and silica sol, wherein the water-soluble The orga...

Claims

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Application Information

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IPC IPC(8): C09D4/06C09D5/08B32B15/08
Inventor 许哲锋陈永徐权张爱萍汤佩林周一林
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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