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Solvent-free epoxy coal tar heavy duty anticorrosive coating and preparation process thereof

A manufacturing process, coal tar technology, applied in the field of solvent-free epoxy coal tar heavy anti-corrosion coating and its manufacturing process, can solve the problems of wear resistance, impact resistance and other performance reduction, long drying time, high labor intensity, etc. Achieve the effects of improving corrosion resistance, fast curing speed and reducing labor intensity

Active Publication Date: 2008-10-15
XIAMEN SUNRUI SHIP COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main technical problems existing in the existing epoxy coal tar pitch paint are: one, it contains solvents, pollutes the environment, and wastes energy; the other is that the protective coating produces pinholes due to the volatilization of solvents, so its anti-corrosion effect, chemical resistance, and insulation The properties such as resistance, adhesion, wear resistance and impact resistance are all reduced; third, the first coating is thin (80-120um) and the drying time is long (surface dry 4h, hard dry 18-24h, fully cured 4-7d), thus Leading to long construction time, low work efficiency and high labor intensity

Method used

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  • Solvent-free epoxy coal tar heavy duty anticorrosive coating and preparation process thereof
  • Solvent-free epoxy coal tar heavy duty anticorrosive coating and preparation process thereof
  • Solvent-free epoxy coal tar heavy duty anticorrosive coating and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A solvent-free epoxy coal tar heavy anti-corrosion coating, including two components A and B, wherein, component A includes: 35 mass units of low-molecular epoxy resin, 10 mass units of reactive diluent, 0.5 mass unit of fluid Variable additive, 0.5 mass unit of defoamer, 0.5 mass unit of leveling agent, 1 mass unit of wetting and dispersing agent, 0.5 mass unit of fumed silica and 52 mass unit of mineral filler;

[0018] Component B includes: 20 mass units of amine curing agent, 30 mass units of coal tar, 0.5 mass unit of defoamer, 0.3 mass unit of leveling agent, 0.5 mass unit of wetting and dispersing agent, 0.7 mass unit of Fumed silica and 48 mass units of mineral filler.

Embodiment 2

[0020] A solvent-free epoxy coal tar heavy anti-corrosion paint, including two components A and B, wherein, component A includes: 36 mass units of low-molecular epoxy resin, 13 mass units of reactive diluent, 1.2 mass units of fluid Variable additive, 1.1 mass units of defoamer, 1.1 mass units of leveling agent, 1.5 mass units of wetting and dispersing agent, 1.1 mass units of fumed silica and 45 mass units of mineral filler;

[0021] Component B includes: 18 mass units of amine curing agent, 28 mass units of coal tar, 1.3 mass units of defoamer, 1.2 mass units of leveling agent, 1.2 mass units of wetting and dispersing agent, 1.3 mass units of Fumed silica and 49 mass units of mineral filler.

Embodiment 3

[0023] A solvent-free epoxy coal tar heavy anti-corrosion coating, including two components A and B, wherein, component A includes: 40 mass units of low-molecular epoxy resin, 12 mass units of reactive diluent, 2 mass units of fluid Variable additive, 2 mass units of defoamer, 2 mass units of leveling agent, 3 mass units of wetting and dispersing agent, 2 mass units of fumed silica and 37 mass units of mineral filler;

[0024] Component B includes: 20 mass units of amine curing agent, 30 mass units of coal tar, 2 mass units of defoamer, 2 mass units of leveling agent, 2 mass units of wetting and dispersing agent, 2 mass units of Fumed silica and 42 mass units of mineral filler.

[0025] Among them, the mineral fillers described in Examples 1, 2, and 3 use silicon-oxygen bonded mineral fillers, and the amine curing agent uses Mannich base curing agents.

[0026] The process of processing and manufacturing solvent-free epoxy coal tar heavy anticorrosion coating is as follows: ...

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Abstract

The invention relates to solvent-free epoxy coal tar heavy anticorrosive paint and a process for making the same. The solvent-free epoxy coal tar heavy anticorrosive paint relates to the anticorrosive paint technical field and comprises two compositions A and B, wherein the composition A comprises 20 to 50 unit mass of epoxide resin, 10 to 15 unit mass of reactive diluent, 0.5 to 2 unit mass of rheological additive, 0.5 to 2 unit mass of defoaming agent, 0.5 to 2 unit mass of flatting agent, 1 to 3 unit mass of wetting dispersant, 0.5 to 2 unit mass of gas phased silicon dioxide and 36 to 55 unit mass of mineral filling material; the composition B comprises 15 to 20 unit mass of amine curing agent, 25 to 30 unit mass of coal tar, 0.5 to 2 unit mass of defoaming agent, 0.3 to 2 unit mass of flatting agent, 0.5 to 2 unit mass of wetting dispersant, 0.7 to 2 unit mass of gas phased silicon dioxide and 45 to 55 unit mass of mineral filling material.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion materials, in particular to a solvent-free epoxy coal tar heavy-duty anti-corrosion coating suitable for reinforced concrete pipelines, underwater underground steel pipelines, ships, docks, bridges and marine engineering and its manufacturing process. Background technique [0002] Solvent-based epoxy coal tar pitch paint has been put on the market in the late 1960s and early 1970s. Due to its high cost performance, almost all underwater underground steel structure projects are protected by this kind of paint, and it is still in use today; After more than 30 years of actual use, it has been shown that the coating thickness of solvent-based epoxy coal tar pitch paint is between 600 and 800um, and it cooperates with impressed current cathodic protection. When used in marine steel structure engineering, its anti-corrosion effect can reach 10 to 15 years; for buried steel pipelines, the protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D195/00
Inventor 蔡云露方大庆吴诤
Owner XIAMEN SUNRUI SHIP COATING
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