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Underwater-curing long-acting anticorrosive coating for marine steel structures, and preparation method thereof

A long-term anti-corrosion, underwater curing technology, used in anti-corrosion coatings, epoxy resin coatings, coatings and other directions, can solve the problem of water being difficult to completely remove, affecting the performance of the paint film, etc., to ensure adhesion and curing shrinkage. , the effect of hard coating

Active Publication Date: 2018-01-19
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the construction process, it is difficult to completely remove the water on the surface of the substrate; at the same time, when the paint film is not completely dry, the external water will penetrate into the paint film, thus affecting the performance of the paint film

Method used

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  • Underwater-curing long-acting anticorrosive coating for marine steel structures, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method for underwater solidified marine steel structure long-acting anti-corrosion coating, wherein, component A:

[0038] Phenolic modified epoxy resin: 45 parts

[0039] ZG8013 reactive diluent: 6 parts

[0040] Filling: 47 servings

[0041] Polyamide wax: 0.3 parts

[0042] BYK-2055: 0.8 parts

[0043] TEGO Foamex N: 0.5 parts

[0044] KH560: 0.6 parts

[0045] Component B:

[0046] Ancamide 2386: 50 servings

[0047] Modified amine curing agent: 50 parts

[0048] The preparation method comprises the following steps:

[0049] (1) Preparation of component A:

[0050] Step 1: Add phenolic modified epoxy resin, epoxy reactive diluent, wetting and dispersing agent, and coupling agent into the dispersion tank in proportion, and disperse at a speed of 1000r / min for 5 minutes to fully disperse evenly;

[0051] Step 2: Add thixotropic agent in proportion, first disperse at 800r / min for 5 minutes, then increase the dispersing speed to 1350r / min, and cont...

Embodiment 2

[0058] A preparation method for underwater solidified marine steel structure long-acting anti-corrosion coating, wherein, component A:

[0059] Phenolic modified epoxy resin: 50 parts

[0060] ZG8013 reactive diluent: 3 parts

[0061] Filling: 55 parts

[0062] Polyamide wax: 0.2 parts

[0063] BYK-2055: 1.0 copies

[0064] TEGO Foamex N: 0.3 parts

[0065] KH560: 0.3 parts

[0066] Component B:

[0067] Ancamide 2386: 60 servings

[0068] Modified amine curing agent: 40 parts

[0069] The preparation method comprises the following steps:

[0070] (1) Preparation of component A:

[0071] Step 1: Add phenolic modified epoxy resin, epoxy reactive diluent, wetting and dispersing agent, and coupling agent into the dispersion tank in proportion, and disperse at a speed of 900r / min for 5 minutes to fully disperse evenly;

[0072] Step 2: Add thixotropic agent in proportion, first disperse at 750r / min for 5 minutes, then increase the dispersing speed to 1000r / min, and conti...

Embodiment 3

[0079] A preparation method for underwater solidified marine steel structure long-acting anti-corrosion coating, wherein, component A:

[0080] Phenolic modified epoxy resin: 20 parts

[0081] ZG8013 reactive diluent: 8 parts

[0082] Filling: 25 servings

[0083] Polyamide wax: 1.0 parts

[0084] BYK-2055: 0.3 parts

[0085] TEGO Foamex N: 0.8 parts

[0086] KH560: 1.0 parts

[0087] Component B:

[0088] Ancamide 2386: 40 servings

[0089] Modified amine curing agent: 60 parts

[0090] The preparation method comprises the following steps:

[0091] (1) Preparation of component A:

[0092] Step 1: Add phenolic modified epoxy resin, epoxy active diluent, wetting and dispersing agent, and coupling agent into the dispersion tank in proportion, and disperse at a speed of 800r / min for 5 minutes to fully disperse evenly;

[0093] Step 2: Add thixotropic agent in proportion, first disperse at 500r / min for 5 minutes, then raise the dispersing speed to 1500r / min, and continue...

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Abstract

The invention discloses an underwater-curing long-acting anticorrosive coating for marine steel structures, and a preparation method thereof. The coating comprises a component A and a component B according to a weight ratio of 1.5:1 to 3:1; the component A comprises, by weight, 20-50 parts of phenolic modified epoxy resin, 3-8 parts of an active diluent, 25-55 parts of a filler, 0.2-1 part of a thixotropic agent, 0.3-1 part of a wetting dispersant, 0.3-0.8 part of an antifoaming agent and 0.3-1 part of a coupling agent; and the component B comprises, by weight, 20-70 parts of a curing agent Iand 30-80 parts of a curing agent II. A paint film produced by using the coating can be fast cured in a wet and even water environment, contains no solvents, has no pollution to the environment, and has good application properties. The coating has the advantages of excellent water curing and underwater curing performances, excellent corrosion resistance, excellent chloride ion permeation resistance, excellent adhesion, and excellent impact resistance.

Description

technical field [0001] The invention relates to the technical field of marine engineering anticorrosion coatings, in particular to an underwater curing long-acting anticorrosion coating for marine steel structures and a preparation method thereof. Background technique [0002] After the marine steel structure has been used in the seawater environment for several years, due to the comprehensive effects of seawater immersion erosion, alternating humidity, splashing waves, wind, rain and sun, the coatings of the structure began to be damaged, and serious corrosion, peeling, etc. Therefore, it is extremely necessary to carry out timely anti-corrosion maintenance on these facilities. However, it is difficult to move these steel structures to the land for maintenance during maintenance and protection. They can only be repaired in situ at low tide, and the construction time is very tight. Conventional anti-corrosion coatings require the surface of the substrate to be dry during con...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D5/08C09D7/65C09D7/63C09D7/61C08G59/40C08G59/56
Inventor 张耿涛茹伟峰刘杰刘改利
Owner 洛阳双瑞防腐工程技术有限公司
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