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Waterborne plating layer sealing agent and preparation method and use thereof, and hot-dip plated metal material

A technology of hot-dip metal plating and sealing agent, applied in the direction of coating, anti-corrosion coating, polyester coating, etc., can solve the problem of poor corrosion resistance of 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 object of the invention is to overcome the poor corrosion resistance defect of the protective film formed by the existing water-based coating sealant, and provide a water-based coating sealer capable of forming a better protective film with corrosion resistance

Method used

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  • Waterborne plating layer sealing agent and preparation method and use thereof, and hot-dip plated metal material
  • Waterborne plating layer sealing 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 water-based coating sealant, 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 agent comprises the first silane coupling agent and the second silane coupling agent, and the first 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 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 agent to obtain a unifo...

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 HS(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-590, the second silane coupling agent 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 4:1.

[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 un...

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 HS(CH 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-580, 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 3.7:1.

[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 weigh...

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Abstract

The invention provides a preparation method of a waterborne plating layer sealing 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 waterborne plating layer sealing 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 waterborne plating layer sealing agent. A protective film formed by the waterborne plating layer sealing agent provided by the invention is quite excellent in corrosion resistance. In addition, the waterborne plating layer sealing 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 water-based coating sealer, a water-based coating sealer obtained by the preparation method, uses of the water-based coating sealer 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 water-based coating sealant will be coated on the surface of the hot-dip metal materials to form a protective film. Therefore, the performance of water-based coating sealant 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 water-based coating sealing agent, and is characterized in that the passivation solution is an aqueous solution containing a water-soluble molybdenum compound, boric acid, water-soluble or...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D125/14C09D163/00C09D175/04C09D133/04C09D133/00C09D127/12C09D7/12C09D5/08
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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