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Zinc-base plating dope and preparation method thereof

A coating and coating technology, applied in the direction of rubber derivative coatings, coatings, etc., can solve the problems of poor curing at low temperature, low zinc content, large VOD release, etc.

Inactive Publication Date: 2011-01-26
沈阳市航达科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above technical solutions do not involve the problems of low zinc content in the dry film of traditional zinc-rich coatings, a large gap between electrode potential and pure zinc, poor low-temperature curing in winter construction environments, large VOD release, and two-component supply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of active zinc powder: select 80 kg of zinc powder not greater than 500 mesh (average particle size less than 7um), mix with 18 kg of xylene, grind for 24 hours under normal temperature and pressure conditions, and then settle for 4 hours to obtain an activity greater than 99%. Zinc dust paste.

[0032] Mix 98 kg of active zinc powder slurry with 6 kg of methyl acrylate, stir evenly at a high speed of 800-1500 rpm, then add 0.4 kg of anti-settling agent thixotropic leveling agent, 0.4 kg of dispersant diethyl diene Propyl chlorination, and again through 800 rpm high-speed stirring to obtain finished zinc-based coatings.

Embodiment 2

[0034] Preparation of active zinc powder: select 75 kg of zinc powder not greater than 500 mesh (average particle size less than 7um), mix with 20 kg of toluene, grind for 24 hours under normal temperature and pressure conditions, and then settle for 4 hours to obtain more than 99% active zinc powder paste.

[0035] Mix 95 kg of active zinc powder slurry with 8 kg of methyl acrylate, stir evenly at a high speed of 800-1500 rpm, then add 0.4 kg of anti-settling agent thixotropic leveling agent, 0.4 kg of dispersant diethyl diene Propyl chlorination, and again through 800 rpm high-speed stirring to obtain finished zinc-based coatings.

Embodiment 3

[0037] Preparation of active zinc powder: choose 85 kg of zinc powder not greater than 500 mesh (average particle size less than 7um), mix with 15 kg of xylene, grind for 24 hours under normal temperature and pressure conditions, and then settle for 4 hours to obtain an activity greater than 99%. Zinc dust paste.

[0038] Mix 100 kg of active zinc powder slurry with 6 kg of high-chlorinated polyethylene, stir evenly at a high speed of 800-1500 rpm, then add 0.4 kg of anti-settling agent thixotropic leveling agent, 0.4 kg of dispersant diethyl di The allyl is chlorinated, and the finished zinc-based coating is obtained by stirring again at a high speed of 800 rpm.

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PUM

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Abstract

A zinc-based coating and its production are disclosed. The coating consists of Zn, neutral resin, diluting agent, anti-settling agent and dispersant. The process is carried out by mixing zinc powder equal or less than 500 meshes with diluting agent, grinding at normal temperature and pressure, settling, mixing active zinc powder slurry with neutral resin proportionally, agitating, adding into anti-settling agent and dispersant and agitating to obtain final product. The zinc content of dry film reaches to 96%, coating surface electrode and potential approach to pure zinc electrode and potential. It could be constructed under -15 deg. C with single component supply. It has more dry-film zinc content, better cryogenic curing effect and more VOD liberation.

Description

technical field [0001] The invention relates to a zinc-rich coating, in particular to a zinc-based coating coating which is supplied with a single component and can be applied under the condition of minus 15 degrees. Background technique [0002] At present, the zinc content of the dry film of traditional zinc-rich coatings is generally below 80%. The surface of the zinc powder used is untreated. It is not as good as hot-dip galvanizing, and the conductivity is not good. Traditional zinc-rich coatings generally need to be cured above 10°C, and the reaction is slow and difficult below 10°C. It is inconvenient for winter construction on large objects, such as ships, bridges, and steel structures. Traditional zinc-rich coatings are composed of curing agent and zinc powder resin solution, which causes a series of inconveniences in transportation, storage, and construction. [0003] The Chinese invention patent application whose publication number is CN1182105 provides a kind o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/28C09D125/06C09D115/02C09D7/12
Inventor 殷跃军韩长智
Owner 沈阳市航达科技有限责任公司