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Functional composite coating and preparing method thereof

A composite coating and functional technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of large thickness of corrosion-resistant coatings, poor seawater corrosion resistance, and short service life, and achieve a small coating thickness. , Excellent corrosion resistance, high elasticity

Active Publication Date: 2016-06-01
CHANGCHUN A&Z SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology provides a new type of material that combines properties such as durability against environmental factors like salt water, heat shocks, abrasion damage, chemical attack, etc., together into a single layer without harmful side reactions during use. Its technical effect lies within this unique combination of materials combined by cathodic electrodeposition techniques.

Problems solved by technology

This patented technical problem addressed by this patents relates to preventing severe rust caused from water that can cause harm if exposed during shipbuilding operations such as shipping and storage. Current methods involve applying protectants containing various chemicals onto steel surfaces at different temperatures before installation into harbors due to their potential negative effects upon human health and environmental concerns over longer periods of time.

Method used

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  • Functional composite coating and preparing method thereof
  • Functional composite coating and preparing method thereof
  • Functional composite coating and preparing method thereof

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preparation example Construction

[0030] The preparation method of the above-mentioned functional composite coating comprises the following steps:

[0031] Step 1. After mixing the zinc yellow primer and the zinc yellow primer curing agent according to the above ratio evenly, paint or spray on the metal substrate to a thickness of 35-65 μm, and cure at room temperature for more than 5 hours to obtain a primer.

[0032]Wherein, according to techniques well known to those skilled in the art, before preparing the coating on the metal substrate, the surface of the metal substrate needs to be roughened and cleaned. For roughening treatment, 60# corundum can be used as sandblasting, and the workpiece can be sandblasted to the standard of sa2.5 or above; for parts that cannot be disassembled and need to be painted online, use an angle grinder or other equipment to roughen the surface of the substrate processed to the appropriate level. The cleaning treatment can use n-hexane or other suitable organic solvents to rep...

Embodiment 1

[0041] The functional composite coating is composed of primer, middle coat and top coat. The primer is composed of zinc yellow primer FXH02-7 with a mass ratio of 8:1 and cardanol modified amine curing agent ZY-2015, with a thickness of 45 μm. The coating is composed of epoxy resin E-44, epoxy resin 830, epoxy resin curing agent 651, toughening agent JHZ-403 and glass hollow microspheres with a mass ratio of 15:33:48:5:30, with a thickness of 0.3 mm, the surface coating consists of fluoroolefin-vinyl ether copolymer resin TFE-PPVE with a mass ratio of 77:7:60:24, fluoroolefin-vinyl ether copolymer resin TFE-PPVE curing agent, and solvent-based polyurethane resin S06- 0215 and solvent-based polyurethane resin S06-0215 ​​curing agent, the thickness is 0.7mm.

[0042] The preparation method of the above-mentioned functional composite coating:

[0043] Step 1. Mix zinc yellow primer FXH02-7 and cardanol-modified amine curing agent ZY-2015 in a mass ratio of 8:1, spray on the meta...

Embodiment 2

[0054] The functional composite coating consists of primer, middle coat and top coat. The primer is composed of zinc yellow primer FXH02-7 with a mass ratio of 8:1 and cardanol modified amine curing agent ZY-2015, with a thickness of 35 μm. The coating is composed of epoxy resin E-20 with a mass ratio of 55:30:2.55:25.5, epoxy resin curing agent polyamide resin 651, butadiene acrylonitrile copolymerized nitrile rubber and lamellar ferrite, with a thickness of 0.25mm, the surface coating consists of fluoroolefin-vinyl ether copolymer resin (DuPont 340BK in the United States) with a mass ratio of 12:1:10:3, fluoroolefin-vinyl ether copolymer resin (DuPont 340BK in the United States) curing agent, and solvent Type polyurethane resin S04-950H.YH, solvent type polyurethane resin S04-950H.YH curing agent, thickness 0.8mm.

[0055] The preparation method of the above-mentioned functional composite coating:

[0056] Step 1. Mix zinc yellow primer FXH02-7 and cardanol-modified amine c...

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Abstract

The invention discloses functional composite coating and a preparing method thereof and belongs to the technical field of coatings. The functional composite coating solves the problems that a corrosion-resisting coating in the prior art is large in thickness, low in elasticity, easy to damage in larger stress impact, poor in friction resistance, poor in marine corrosion resistance, short in service life and unable to be used in a wider temperature range. The composite coating is composed of a base coat, a floating coat and a cover coat, wherein the base coat is composed of a zinc chromate primer and a zinc chromate primer curing agent according to a weight ratio of 8 to 1, the thickness of the base coat is 35-65mum, the floating coat is composed of epoxy resin, an epoxy curing agent, a flexibilizer and a filling agent, the thickness of the floating coat is 0.25-0.45mum, the cover coat is composed of fluorocarbon painting and functional painting according to a weight ratio of 1 to 1, and the thickness of the cover coat is 0.4-0.8mum. The composite coating has excellent corrosion resistance, friction resistance and impact resistance, is small in coating thickness and high in elasticity, can resist high-low temperature change of seawater and can be used in a wider temperature range.

Description

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Claims

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Application Information

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Owner CHANGCHUN A&Z SCI CO LTD
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