Metal protective water-based paint, preparation method and application thereof, and hot-dipped metal material

A metal protection and hot-dip metal technology, 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.

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 metal protective water-based paint, and to provide a metal protective water-based paint capable of forming a better protective film with corrosion resistance

Method used

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  • Metal protective water-based paint, preparation method and application thereof, and hot-dipped metal material

Examples

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preparation example Construction

[0013] The invention provides a kind of preparation method of water-based paint for metal protection, the method comprises water, silane coupling agent, water-soluble silicate, accelerator, silicon oxide filler and water-soluble film-forming resin are mixed successively; The 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 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 uniform liquid A and a water-soluble silicate to obtain a uniform liquid B; (3) uniformly mix the uniform liquid B and accelerator to obtain uniform liquid C; (4) uniformly mix the uniform liquid C and silicon oxide filler to obtain uniform liquid D; (5) uniformly Liquid D is uniformly mixed with water-soluble film-forming resin...

Embodiment 1

[0051] With the water of 28 parts by weight and the silane coupling agent (HS(CH) of 1.6 parts by weight 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-590) and mixed until uniform at a stirring speed of 1500 rpm to obtain a uniform liquid A.

[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 of the homogeneous liquid B and 0.6 parts by weight of accelerator (thiourea) were mixed until uniform at a stirring speed of 1500 rpm to obtain a homogeneous liquid C.

[0054] All the homogeneous liquid C and 0.72 parts by weight of silica filler (nano silica sol, purchased from Shandong Baite New Material Co., Ltd., the brand is SS-30, and the weight is calculated as silica) at 1500 rpm Mix until homogeneous at stirring speed to obtain...

Embodiment 2

[0063] With the water of 25 parts by weight and the silane coupling agent (HS(CH) of 1.4 parts by weight 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-580) and mixed until uniform at a stirring speed of 1500 rpm to obtain a uniform liquid A.

[0064] 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.

[0065] All of the homogeneous liquid B and 0.5 parts by weight of accelerator (an equal weight mixture of thiourea and urea) were mixed until uniform at a stirring speed of 1500 rpm to obtain a homogeneous liquid C.

[0066] Mix all the homogeneous liquid C and 0.6 parts by weight of silica filler (nano silica sol, purchased from ADEKA Co., Ltd., the brand is AT-30, and the weight is calculated as silica) at a stirring speed of 1500 rpm until un...

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Abstract

The invention provides a preparation method of metal protective water-based paint, which comprises well mixing of water, a silane coupling agent, water-soluble silicate, a promoter, a silicon oxide filling material, and water-soluble film forming resin in order. The invention also provides metal protective water-based paint prepared by the preparation method, and an application of the metal protective water-based paint in preparation of metal materials. The invention also provides a hot-dipped metal material which comprises a hot-dipped metal substrate, and a coating adhered to the hot-dipped metal substrate, and the coating is a cured product of the above metal protective water-based paint. Protecting films formed by the metal protective water-based paint provided in the invention have quite excellent corrosion resistance. In addition, the metal protective water-based paint provided in the invention is quite excellent in storage resistance, and can be stored at room temperature for 180 days after preparation without any obvious property change or performance reduction.

Description

technical field [0001] The invention relates to the field of metal protection, in particular to a preparation method of a water-based metal protection paint, a water-based metal protection paint obtained by the preparation method, uses of the water-based metal protection paint 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 water-based paint will be coated on the surface of the hot-dip metal materials to form a protective film. Therefore, the performance of metal protective water-based paint 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 water-based paint, and is characterized in that the passivation solution is an aqueous solution containing a water-soluble molybdenu...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D7/12C09D167/00C09D125/14C09D163/00C09D175/04C09D133/04C09D133/00C09D127/12B32B15/08
Inventor 许哲峰陈永徐权冉长荣汤佩林周一林
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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