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Special coating for modified epoxy denitration device, and preparation method thereof

A modification and coating technology, which is applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of low cost of modified epoxy coatings, high cost of pure epoxy coatings, and complicated construction techniques, and achieve good results. Fullness, anti-sedimentation, and effect of improving protective ability

Active Publication Date: 2014-08-20
JIANGSU XIN AN NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of pure epoxy coatings is high at present. Chinese Patent No. CN200810140802.7, the title of the invention is "A Recoatable General-Purpose Epoxy Antirust Paint Realizing Four-season Construction with a Single Curing Agent", which discloses a low molecular weight dual Phenol A epoxy resin is used as the base material, and anti-corrosion coatings with branched reactive diluents are introduced into the formula. This patent belongs to pure epoxy resin coatings, and the cost is high. Compared with the high-cost pure epoxy resin coatings, the modified ring Oxygen coatings are attracting attention due to their low cost and comparable performance to pure epoxy coatings
However, there are many kinds of epoxy coatings and modified epoxy coatings, and the construction process is complicated. At present, there is an urgent need for a special coating for modified epoxy denitration equipment and its preparation method, which can be used in denitration equipment, and there is no coating interval. Good anti-corrosion effect, prolonging the service life of the denitrification device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A special coating for modified epoxy denitrification devices provided in this example, the coating includes two components, A and B, and the weight ratio of component A to component B is 5:1;

[0051] A component includes the following components by mass percentage, 50% modified epoxy resin, 25% 500 mesh graphite flakes, 11% polyamide, 10% precipitated barium sulfate, 4% additives;

[0052] Component B includes the following ingredients by mass percentage, 40% curing agent and 60% solvent;

[0053] Among them, the modified epoxy resin is composed of 76% epoxy resin, 5% epoxypropyl trimethoxysilane, 9% polyamide, 2% benzyl dimethylamine benzyl triethyl ammonium chloride and 8% polyurethane prepolymer composition;

[0054] In this embodiment, the auxiliary agent is a silicon-based polymerizing agent and a reactive diluent mixed at a ratio of silicon-based polymerizing agent: reactive diluent = 1:1.

[0055] In this embodiment, the curing agent is a modified polyamide cu...

Embodiment 2

[0069] A special coating for a modified epoxy denitrification device provided in this example, the coating includes two components, A and B, and the weight ratio of component A to component B is 5.5:1;

[0070] Component A includes the following components by mass percentage, 59% of modified epoxy resin, 19% of 500 mesh graphite flakes, 10% of polyamide, 10% of precipitated barium sulfate, and 2% of additives;

[0071] Component B includes the following ingredients by mass percentage, 35% curing agent and 65% solvent;

[0072] Among them, the modified epoxy resin is composed of 80% epoxy resin, 4% epoxypropyltrimethoxysilane, 8% polyamide, 1% benzyldimethylamine benzyltriethyl ammonium chloride and 7% polyurethane prepolymer composition;

[0073] In this embodiment, the auxiliary agent is a silicon-based polymerizing agent and an additive, which are mixed at a ratio of silicon-based polymerizing agent: additive = 1:1.

[0074] In this embodiment, the curing agent is a modifi...

Embodiment 3

[0088]A special coating for modified epoxy denitration devices provided in this example, the coating includes two components, A and B, and the weight ratio of component A to component B is 6:1;

[0089] Component A includes the following components by mass percentage, 55% of modified epoxy resin, 20% of 500 mesh graphite flakes, 12% of polyazelaic anhydride, 10% of precipitated barium sulfate, and 3% of additives;

[0090] Component B includes the following ingredients by mass percentage, 45% curing agent and 55% solvent;

[0091] Among them, the modified epoxy resin is composed of 75% epoxy resin, 6% epoxypropyltrimethoxysilane, 10% polyamide, 1% benzyldimethylamine benzyltriethyl ammonium chloride and 8% polyurethane prepolymer composition;

[0092] In this embodiment, the auxiliary agent is silicon-based polymerizing agent, additive and reactive diluent, which are mixed according to the ratio of silicon-based polymerizing agent: additive: reactive diluent = 1:1:.

[0093]...

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Abstract

The invention discloses a special coating for a modified epoxy denitration device, and a preparation method thereof. The coating comprises a component A and a component B, the component A comprises modified epoxy resin, an inert sheet material, a flexibilizer, precipitated barium sulfate and an assistant, and the component B comprises a curing agent and a solvent. The preparation method comprises the following steps: adding the epoxy resin, the flexibilizer and the assistant in the component into a dispersion cylinder, stirring, adding precipitated barium sulfate, adding the inert sheet material, filtering to obtain the component A of the coating, dissolving the curing agent by using the solvent in the component B, filtering to obtain the component B of the coating, weighing the prepared component A and the component B according to a mass ratio, uniformly mixing, and curing to obtain the special coating for a modified epoxy denitration device. The special coating for a modified epoxy denitration device has the advantages of strong adhesion, unlikely shedding, good impermeability, chemical reagent resistance, improvement of the whole protection capability of the coating, and prolongation of the service life of the denitration device, and the method has the advantages of simple operation, low cost and the like.

Description

technical field [0001] The invention relates to a special coating for a denitration device and a preparation method thereof, in particular to a modified epoxy denitration device special coating and a preparation method thereof, and belongs to the field of coating material preparation. Background technique [0002] Denitrification is an essential technical point in the thermal power industry. The reason is that my country's energy consumption is dominated by coal, and about 90% of sulfur dioxide, 67% of nitrogen oxides, and 70% of soot emissions come from coal combustion. Among them, flue gas emissions from coal-fired boilers are the most prominent. NOx produced by coal combustion is dominated by NO (more than 90%), followed by NO2. It is easy to cause acid rain and other hazards, and it also has a great impact on human health. Therefore, denitrification treatment is necessary. At present, my country's thermal power mainly adopts SCR technology, that is, selective catalytic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D177/00C09D163/10C09D123/00C09D5/08C09D7/12C08G59/40
Inventor 杨松林吴福娣陈晓兵
Owner JIANGSU XIN AN NEW MATERIALS TECH
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