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A coating anti-rust protective agent, its preparation method and application, and a hot-dip metal material

A hot-dip metal and protective agent technology, which is applied in the field of coating anti-rust protective agent and hot-dip metal material, 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: 2016-06-15
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 relatively poor corrosion resistance defect of the protective film formed by the existing coating antirust protective agent, and provide a coating antirust protective agent capable of forming a better protective film with corrosion resistance

Method used

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  • A coating anti-rust protective agent, its preparation method and application, and a hot-dip metal material

Examples

Experimental program
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Effect test

preparation example Construction

[0013] The invention provides a method for preparing a coating antirust protective agent, which method 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; Silane coupling agent comprises the first silane coupling agent and the second silane coupling agent, and the first silane coupling agent is Cl(CH 2 ) 3 Si(OCH 3 ) 3 , Cl(CH 2 ) 3 Si(OC 2 h 5 ) 3 , Cl(CH 2 ) 3 SiCH 3 (OCH 3 ) 2 and Cl(CH 2 ) 3 SiCH 3 (OC 2 h 5 ) 2 at least one of; the second 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 them; 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 liquid A; (2) uniformly mixing the u...

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 Cl(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-231, the second silane coupling agent is CH 2 =CHSi(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-171, 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 of the homogeneous liquid B and 0.6 parts by weight of accelerator (thiourea) were mixed until uniform at a stirri...

Embodiment 2

[0068] 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 Cl(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-231, the second 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 weight ratio of the first silane coupling agent and the second silane coupling agent is 1.4:1.

[0069] 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.

[0070] All of the homogeneous liquid B and 0.5 parts by weight of accelerator (an equal weight mixture of thiourea ...

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Abstract

The invention provides a preparation method of a coating antirust protective agent, which comprises the steps of uniformly 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 present invention also provides the coating antirust protection agent prepared according to the above preparation method and the application of the above coating antirust protection agent in the preparation of metal materials. The present invention also provides a hot-dip metal material, which includes a hot-dip metal substrate and a coating attached to the hot-dip metal substrate, and the coating is the antirust protection of the coating as described above. The cured product of the agent. The corrosion resistance of the protective film formed by the coating antirust protection agent provided by the invention is very good. In addition, the antirust protection agent for coating provided by the invention has excellent storage resistance, and can be stored at room temperature for 180 days without obvious change in properties and performance decline after the preparation is completed.

Description

technical field [0001] The invention relates to the field of metal protection, in particular to a method for preparing a coating antirust protectant, a coating antirust protectant obtained by the preparation method, uses of the coating antirust protectant 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 anti-rust protective agent will be coated on the surface of the hot-dip metal materials to form a protective film. Therefore, the performance of the coating anti-rust 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 coating antirust protection agent, and is characterized in that the passivation solution is an aqueous solution containing a water-soluble molybdenum compound, boric acid, wate...

Claims

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Application Information

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Patent Type & Authority Patents(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