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

A technology of hot-dip metal plating and protective agent, applied in anti-corrosion coatings, metal layered products, chemical instruments and methods, etc., can solve the problems of poor corrosion resistance of protective films, 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 corrosion inhibitor and protectant, and provide a corrosion inhibitor that can form a passivation film with better corrosion resistance

Method used

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

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preparation example Construction

[0013] The invention provides a preparation method of a corrosion inhibitor and protective agent, 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 The coupling agent contains a first silane coupling agent and a 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 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 CH 2 (O)CHCH 2 O(CH 2 ) 3 -or The accelerator is thiourea and / or urea.

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

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 (O)CHCH 2 O(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-560, 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 uni...

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 (O)CHCH 2 O(CH 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-563, 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 ...

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Abstract

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

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 许哲锋陈永徐权张爱萍汤佩林周一林
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP