Aqueous cold zinc spraying coating and preparation method thereof

A cold spray zinc, water-based technology, used in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of poor anti-corrosion performance and complicated construction, and achieve good recoatability, long-term anti-corrosion ability, and good repair. effect of ability

Active Publication Date: 2016-09-21
WUXI HUADONG ZINDN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In view of the defects of poor anticorrosion performance and cumbersome construction of water-based industrial paints in the prior art, the present invention provides a single...

Method used

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  • Aqueous cold zinc spraying coating and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of water-based cold spray zinc paint, comprises the following steps:

[0036] Weigh 12kg of water-based epoxy-modified polyurethane resin, 0.2kg of fumed silica, 1kg of polyamide dendrimers, and 3kg of water, add them to the reaction kettle, start the stirrer to stir at 800r / min for 20min, and then stir at 200r / min Slowly add 84kg of water-based zinc powder at a rate of 50kg / min at a rotating speed, increase the rotating speed to 800r / min and continue stirring for 30min after adding, and filter and pack with a 200-mesh filter screen to obtain the water-based cold spray zinc coating.

Embodiment 2

[0038] The preparation method of water-based cold spray zinc paint, comprises the following steps:

[0039] Weigh 10kg of water-based epoxy-modified polyurethane resin, 0.1kg of fumed silica, 1.0kg of polyamide dendrimers, and 3kg of water, add them to the reaction kettle, start the mixer to stir at 800r / min for 20min, then stir at 200r / min Slowly add 86kg of water-based zinc powder at a rate of 50kg / min under the rotating speed of 50kg / min, after adding, increase the rotating speed to 800r / min and continue to stir for 30min, and adopt 200 mesh filter screens to filter and pack to obtain the water-based cold spray zinc coating.

Embodiment 3

[0041] The preparation method of water-based cold spray zinc paint, comprises the following steps:

[0042] Weigh 10kg of water-based epoxy-modified polyurethane resin, 0.1kg of fumed silica, 2kg of polyamide dendrimers, and 4kg of water, add them to the reaction kettle, start the mixer to stir at 800r / min for 20min, and then stir at 200r / min Slowly add 84kg of water-based zinc powder at a rate of 50kg / min at a rotating speed, increase the rotating speed to 800r / min and continue stirring for 30min after adding, and filter and pack with a 200-mesh filter screen to obtain the water-based cold spray zinc coating.

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Abstract

The invention discloses an aqueous cold zinc spraying coating and a preparation method thereof. The costing is made from the following materials of 10-12wt% of aqueous epoxy modified polyurethane resin, 0.1-0.2wt% of gas phase silicon dioxide, 80-86wt% of aqueous zinc powder, 1-3wt% of an aqueous corrosion inhibitor and 3-5wt% of water. The invention further discloses the preparation method of the coating. The preparation method comprises the following steps: adding the aqueous epoxy modified polyurethane resin, the aqueous corrosion inhibitor, the water and the gas phase silicon dioxide according to the proportion of a formula in a reaction kettle, performing uniform stirring, then slowly adding the aqueous zinc powder, continuing to perform stirring, and performing filtration so as to obtain the finished product. The coating has the characteristics that the coating has ultra-high corrosion prevention capacity, the coating is in single-package, and the content of zinc in dried films is as high as 92% or above; the preparation method of the coating is simple and controllable, and the energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of heavy-duty anticorrosion coatings for steel structures, and in particular relates to a water-based cold-sprayed zinc coating and a preparation method thereof. Background technique [0002] Outdoor steel structure materials include large-scale construction machinery, bridges, public facilities, etc. The above-mentioned steel structure materials cause huge economic losses due to metal corrosion. Coating system is a commonly used anti-corrosion method for steel structures. Traditional coatings for outdoor steel structure materials are solvent-based products with high VOC (volatile organic compound) content. During the process of manufacturing, construction, drying, and curing film formation, the VOC emitted into the air will seriously pollute the environment. Starting from February 1, 2015, the country will start to levy a 4% consumption tax on paints with a content higher than 420g / L (inclusive), so the pai...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/10C09D7/12
CPCC09D5/106C09D7/61C09D7/65C09D175/04C08L77/00C08K9/10C08K2003/0893C08K3/36
Inventor 杨志华褚路轩王京甫
Owner WUXI HUADONG ZINDN TECH
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