How to apply epoxy anticorrosive materials? What is a liquid epoxy anticorrosive coating?

The method of using epoxy resin for antiseptics:

Use a floor grinder or sandblasting machine to remove foreign objects such as loose layer, cement stains, lime wax and other foreign objects on the floor, and polish the uneven whole place.

The sand and drum should be cleaned and repaired with epoxy mortar.

When there is oil, oil stains or other dirt, it should be cleaned before polishing. Note: Whether there is waterproof treatment under the base element, the surface is smooth, firm, no sand, no looseness, no water, oil, organic solvents, etc.

Construction method: After the treatment of the base plain land, the following method is adopted;

Primer coating: first stir the A component evenly and prepare it according to the proportion of A and B components; After stirring evenly, the construction is carried out with a scraper or roller.

Primer coating: After the primer is dry, the primer is applied in batches with a scraper to fill the holes in the floor. After it is completely dry, it can be applied in the second scrape to increase the thickness of the coating and improve the pressure resistance.

After the coating is completely dry, polish it with a sander, sandpaper, etc., and polish off the knife marks, unevennesses and particles generated by the batch coating, and vacuum it clean.

Roller topcoat: After the topcoat is proportionally adjusted, the floor is evenly rolled over with the roller coating method (spraying and brushing can also be used), and the second topcoat can be rolled if necessary, the method is the same.

Stir the protectant well and apply it with a cotton cloth or cotton mop. It is required to be uniform and no residue. At the same time, care should be taken not to scratch the ground with sharp objects.

The main classification of epoxy potting compound: According to its different composition, it is mainly divided into two types, one is one-component epoxy potting compound; One is a two-component epoxy encapsulant. According to the color, it can be divided into transparent, black and milky white, etc., according to the mixing ratio, there is generally 1:

1, 2:1, 3:1 and 4:4 in black

1 or 5:1, etc.

One-component epoxy encapsulant is a variety of medium or high temperature curing with latent epoxy curing agent, and its curing conditions often need to be heated to cure, and its storage conditions are generally stored below 25 degrees at room temperature or about 5 degrees in the refrigerator. The main agent and the curing agent of the two-component potting compound are packaged and stored separately, and the AB mixing ratio must be carried out in a specific proportion before use, and the potting operation can be carried out after stirring evenly, so that the colloid can be vacuumed and deaerated before potting for its better quality.

Epoxy resin adhesive is widely used to bond various metals and alloys, ceramics, glass, wood, cardboard, plastics, concrete, stone, bamboo and other non-metallic materials, and can also be bonded between metals and non-metallic materials. It has no adhesion to untreated plastics such as polyethylene, polypropylene, PTFE, polystyrene, and polyvinyl chloride, and has poor adhesion to soft materials such as rubber, leather, and fabric. FRP stands for "Fiber Reinforced Plastic", and FRP anticorrosion refers to the use of fiber reinforced materials on the surface of concrete, usually carbon fiber cloth composite materials.

Through the difference between the chemical corrosion resistance of the carbon fiber cloth itself and the concrete, a chemical corrosion resistance effect on the surface of the concrete is obtained, and the carbon fiber cloth itself has relatively high physical properties, so it can also have a strength enhancement effect.

The practice includes three cloths and five oils (also known as three cloths and five coats, three cloths and five glues), two cloths and four oils (coating, glue), three cloths and five oils (coating, glue), four cloths and six oils (coating, glue), five cloths and seven oils (coating, glue), six cloths and eight oils (coating, glue), seven cloth and nine oils (coating, glue), eight cloth and ten oils (coating, glue), nine cloth and eleven oils (coating, glue), ten cloth and twelve oils (coating, glue), etc. (and so on, glue is more than cloth). This paper systematically discusses the basic connotation, main technical advantages, design points and operating principles of the new chimney technology, and illustrates the rationality and practical feasibility of the new chimney technology from the aspects of aerodynamic principle and engineering practice. The main function of the chimney is to pull out the fire, exhaust the smoke, and improve the combustion conditions.

When the indoor temperature is higher than the outdoor temperature, the indoor hot air rises naturally along these vertical channels due to the small density, and seeps out from the high-rise part through the gaps in doors and windows and various holes, and the outdoor cold air is supplemented by the infiltration from the lower floor due to its high density, which forms a chimney effect.

It is based on epoxy resin, and then added other anti-corrosion materials, a new type of liquid anti-corrosion material, which has the advantages of simple operation and long service time

Epoxy coatings can be divided into two types of coatings, one is liquid epoxy coatings and the other is solid epoxy coatings. Liquid epoxy coatings are mostly composed of low molecular weight epoxy resins and medium molecular epoxy resins.

Liquid epoxy coatings are classified as high-solvent, medium-solvent, low-solvent (also known as high-build) and solvent-free. The performance of liquid epoxy coatings is mainly determined by two factors, one is the epoxy resin content, and the other is the solvent content.

After experimental research, the epoxy resin content should not be less than 25%, the epoxy resin content in the coating is high, the anti-corrosion layer has high adhesion, high mechanical strength, fast curing speed during coating, and the coating is dense, and the anti-corrosion layer with excellent performance can be obtained. The solvent content in the coating should be as little as possible, the solvent content directly affects the density of the coating and the number of pinholes, and is also related to the number of coating times, ergonomics, construction period, labor and mechanical costs.

Epoxy anticorrosive coating is a kind of composite material with epoxy as the adhesive, taking Beijing Naimer Company as an example, its models are:

1. Refers to Sen KN17 polymer ceramic polymer epoxy anticorrosive coating 2, KN7051 silicon carbide epoxy anticorrosive coating.

3. KN99898 small particle epoxy ceramic coating.

4. KN99899 Dayuzhen granular epoxy ceramic coating.