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Metal protective agent and preparation method and use thereof, and hot-dip plated metal material

A metal protection and hot-dip metal technology, applied in the direction of anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of poor corrosion resistance of the protective film, and achieve the effect of 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 present invention is to overcome the poor corrosion resistance defect of the protective film formed by the existing metal protective agent, and provide a metal protective agent capable of forming a protective film with better corrosion resistance

Method used

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  • Metal protective agent and preparation method and use thereof, and hot-dip plated metal material

Examples

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preparation example Construction

[0013] The invention provides a method for preparing a metal protective agent, which comprises 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 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 In at least one, the second silane coupling agent is HS (CH 2 ) 3 Si(OCH 3 ) 3 、HS(CH 2 ) 3 Si(OC 2 h 5 ) 3 、HS(CH 2 ) 3 SiCH 3 (OCH 3 ) 2 and HS(CH 2 ) 3 SiCH 3 (OC 2 h 5 ) 2 at least one of the

[0014] Wherein, in detail, the method includes: (1) uniformly mixing water and the silane coupling agent to obtain a uniform liquid A; (2) uniformly mixing the uniform liquid A and a water-soluble silicate to obtain a uniform liqui...

Embodiment 1

[0052] 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 (HS(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-590, the weight ratio of the first silane coupling agent and the second silane coupling agent is 1.5:1.

[0053] 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 .

[0054] All the homogeneous liquid B and 0.72 parts by weight of silica filler (nano silica sol, purchased from Shandong Bait...

Embodiment 2

[0067] 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 HS (CH 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-580, the weight ratio of the first silane coupling agent and the second silane coupling agent is 1.4:1.

[0068] 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.

[0069] Mix all the homogeneous liquid B and 0.6 parts by weight of silica filler (nano-silica sol, purchased f...

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Abstract

The invention provides a preparation method of a metal protective agent. 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 metal protective agent 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 metal protective agent. A protective film formed by the metal protective agent provided by the invention is quite excellent in corrosion resistance. In addition, the metal protective agent 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 metal protection agent, a metal protection agent obtained by the preparation method, uses of the metal protection agent 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 metal protective agent will be coated on the surface of the hot-dip metal materials to form a passivation film. Therefore, the performance of metal protective agent 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 metal protective agent, and is characterized in that the passivation solution is an aqueous solution containing a water-soluble molybdenum compound, boric acid, water-soluble organic matter and silica sol, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D125/14C09D163/00C09D175/04C09D133/04C09D133/00C09D127/12C09D5/08C09D7/12
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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