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Primer-topcoat type epoxy zinc powder coating and preparation method thereof

An epoxy zinc, bottom surface technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., to reduce the variety of coatings, avoid cumbersome processes, and improve the effect of decorative appearance

Active Publication Date: 2022-02-15
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the epoxy zinc powder coating that can be combined with the ground and the surface, has good anti-corrosion performance and good surface decoration effect

Method used

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  • Primer-topcoat type epoxy zinc powder coating and preparation method thereof
  • Primer-topcoat type epoxy zinc powder coating and preparation method thereof
  • Primer-topcoat type epoxy zinc powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] The composition of component A is as follows:

[0095] Taking zinc powder as 100 parts by weight,

[0096]

[0097]

[0098] Wherein epoxy 601 resin liquid (mass concentration 50%) is made by mixing epoxy 601 resin and solvent C with a mass ratio of 1:1; solvent A and solvent C are xylene: cyclohexanone: ethylene glycol butyl A mixed solvent with a mass ratio of ether of 1:0.5:0.5;

[0099] The preparation method of component A: add epoxy 601 resin liquid, red powder, dispersing aid, coupling agent and solvent according to the stated formula into the stirring container, and stir for 10 minutes until uniform at a speed of 800r / min; add body filler, Stir for 10 minutes until uniform; use a sand mill to grind to a fineness of less than 50 microns; under stirring, add the 500-mesh zinc powder of the formula, the speed is 1500r / min, stir for 30 minutes until uniform, filter through a filter, measure and pack, Obtain the A component.

[0100] The formula composition ...

Embodiment 2

[0116] The composition of component A is as follows:

[0117] Taking zinc powder as 100 parts by weight,

[0118]

[0119] Wherein epoxy 601 resin liquid (mass concentration 50%) is made by mixing epoxy 601 resin and solvent C with a mass ratio of 1:1; solvent A and solvent C are xylene: cyclohexanone: ethylene glycol butyl A mixed solvent with a mass ratio of ether of 1:0.5:0.5;

[0120] Preparation method of component A: add epoxy 601 resin solution, phthalocyanine blue, dispersing aid, coupling agent and solvent according to the stated formula into the stirring container, and stir for 10 minutes until uniform at a speed of 800r / min; add body filler , stir for 10 minutes until uniform; use a sand mill to grind to a fineness of less than 50 microns; under stirring, add the 500-mesh zinc powder of the formula, the speed is 1500r / min, stir for 30 minutes until uniform, filter through a filter, measure and pack , to obtain component A.

[0121] The formula composition of B...

Embodiment 3

[0137] Taking zinc powder as 100 parts by weight,

[0138]

[0139]

[0140] Wherein epoxy 604 resin liquid (mass concentration 50%) is made by mixing epoxy 601 resin and solvent C with a mass ratio of 1:1; solvent A and solvent C are xylene: the mass ratio of cyclohexanone is 1 : 0.5 mixed solvent;

[0141] Preparation method of component A: add epoxy 604 resin solution, phthalocyanine blue, dispersing aid, coupling agent and solvent according to the stated formula into the stirring container, and stir for 20 minutes until uniform at a speed of 1000r / min; add body filler , stir for 20 minutes until uniform; use a sand mill to grind to a fineness of less than 50 microns; under stirring, add the 800-mesh zinc powder of the stated formula at a speed of 2000r / min, stir for 30 minutes until uniform, filter through a filter, and measure and pack , to obtain component A.

[0142] The formula composition of B component is as follows:

[0143] Prepare the phenalkamine curing ...

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Abstract

The invention provides a primer-topcoat type epoxy zinc powder coating and a preparation method thereof. The primer-topcoat type epoxy zinc powder coating comprises a component A and a component B, the component A is prepared from the following raw materials: epoxy resin liquid, zinc powder, a body filler, a coloring pigment, a dispersing aid, a coupling agent and a solvent A; the component B is prepared from raw materials including an amine curing agent and a solvent B; and the mass ratio of the component A to the component B is (5-15): 1. The prepared coating is low in zinc powder content, does not contain bentonite, silicon dioxide or polyamide wax, but is good in corrosion resistance, the neutral salt mist resistance of a lining paint film can reach 1000 h or above, meanwhile, the gloss can reach 60 or above, a good surface decoration effect is achieved, and the prime and the topcoat are combined.

Description

technical field [0001] The invention relates to the field of special anti-corrosion coatings, in particular to a bottom-surface-integrated epoxy zinc powder coating and a preparation method thereof. Background technique [0002] Traditional epoxy zinc-rich coatings contain a large amount of zinc powder, which enables them to play a special role in cathodic protection in the process of anti-corrosion protection of steel substrates, and has excellent anti-corrosion effects. It is one of the best anti-corrosion coatings on the market. It is used as a pre-coating primer in the workshop, and it can be welded when the film thickness is 15-25um without affecting the welding performance. Many advantages make it widely used in storage tanks, containers, steel structures, steel pipes, offshore platforms, ships, seaport facilities, and primers in harsh anti-corrosion environments. [0003] However, the traditional epoxy zinc-rich coating contains a large amount of zinc powder (the zin...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D5/10C09D7/20
CPCC09D163/00C09D5/106C09D7/20C08K2003/0893C08K3/08
Inventor 关迎东李文博林巧战为民刘顺强孙春龙
Owner MARINE CHEM RES INST
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