Coating composition, preparation method and application thereof, and hot-dipped metal material

A technology for hot-dip metal plating and composition, applied in anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve problems such as poor corrosion resistance of protective films, and achieve the effects of excellent storage resistance and 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

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the poor corrosion resistance of the protective film formed by the existing coating composition, and provide a coating composition capable of forming a protective film with better corrosion resistance

Method used

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  • Coating composition, preparation method and application thereof, and hot-dipped metal material

Examples

Experimental program
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Effect test

preparation example Construction

[0013] The invention provides a method for preparing a coating composition, 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 The 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 NH 2 (CH 2 ) 2 NH(CH 2 ) 3 -, NH 2 (CH 2 ) 2 NHCH 2 CH(CH 3 )CH 2 -, HO(CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 3 - or NH 2 (CH 2 ) 2 NH(CH 2 ) 2 NH(CH 2 ) 3 -; 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) unif...

Embodiment 1

[0051] With 28 parts by weight of water and 1.6 parts by weight of silane coupling agent (NH 2 (CH 2 ) 2 NH(CH 2 ) 3 Si(OCH 3 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-792) 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 ...

Embodiment 2

[0063] 25 parts by weight of water and 1.4 parts by weight of silane coupling agent (NH 2 (CH 2 ) 2 NH(CH 2 ) 3 Si(OC 2 h 5 ) 3 , purchased from Hubei Debang Chemical New Material Co., Ltd., brand DB-793) 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 unti...

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Abstract

The invention provides a preparation method of a coating composition, 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 a coating composition prepared by the preparation method, and an application of the coating composition 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 coating composition. Protecting films formed by the coating composition provided in the invention have quite excellent corrosion resistance. In addition, the coating composition 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 coating composition, a coating composition obtained by the preparation method, an application of the coating composition 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 coating composition will be coated on the surface of the hot-dip metal materials to form a protective film. Therefore, the performance of the coating composition 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 composition, 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, wherein...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D125/14C09D163/00C09D175/04C09D133/04C09D133/02C09D127/12C09D5/08C09D7/12
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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