CN217628192U

CN217628192U - Outer surface anti-corrosion composite coating of civil air defense door

Info

Publication number: CN217628192U
Application number: CN202220669351.1U
Authority: CN
Inventors: 赵阳; 赵洪祥; 白晓军; 代娇娇
Original assignee: Qingdao Guogong High Tech Materials Co ltd
Current assignee: Qingdao Guogong High Tech Materials Co ltd
Priority date: 2022-03-26
Filing date: 2022-03-26
Publication date: 2022-10-21
Anticipated expiration: 2032-03-26

Abstract

The utility model relates to an outer surface anti-corrosion composite coating of civil air defense door, the anti-corrosion composite coating uses a civil air defense door steel plate as a base material layer, and the anti-corrosion composite coating is formed by compounding a primer layer, a middle paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the dry film thickness range of the epoxy zinc-rich primer layer is 40-80 mu m; the middle paint layer is a reticular polyurethane middle paint layer, and the dry film thickness of the middle paint layer is 150-220 μm; the finish paint layer is an asparagus polyurea finish paint layer, and the dry film thickness of the finish paint layer is 30-50 mu m; the total thickness of dry films of the primer, the intermediate paint and the finish paint is more than or equal to 250 mu m. The utility model discloses an anticorrosive composite coating levels smoothly, adhesive force is strong, hardness is high, chemical resistance performance and weatherability are good, can greatly promote the anticorrosive corrosion resistance of people's air defense door external surface, weatherability, guarantee that the substrate does not corrode for a long time, prolong life.

Description

Outer surface anti-corrosion composite coating of civil air defense door

Technical Field

The utility model relates to a people's air defense door anticorrosive technical field, more specifically say, it relates to a people's air defense door external surface anticorrosive composite coating.

Background

The civil air defense door is a door at the entrance and exit of civil protection engineering, and is used for protecting refuge people in wartime, and blocking toxic gas and blasting and killing. The civil air defense door is in a normally open state in peace period, and due to the fact that the civil air defense door is exposed outside all the year round, the phenomena that rust is frequently generated on the surface of the door and the hinge is inconvenient to rotate occur. The accumulated result of the corrosion on the surface of the door for a long time is to greatly reduce the protection effect of the door, thus the requirement of combat readiness can not be met, and the door can not play a role in blocking and sealing in the real war period.

At present, the method generally adopted in the aspect of civil air defense door anticorrosion is to cover an anticorrosion coating on the surface of a door, the traditional anticorrosion coating is easy to crack, age, peel, fall off and the like in a humid environment, the protection period is shortened, and the coating needs to be frequently repaired. Because the civil air defense door is relatively large in size and difficult to install, if coating repair is required, rust must be removed firstly, and after surface treatment, bottom, middle and finish paint repair is carried out, so that the process is complicated, the workload is large, and the operation and maintenance cost and the labor cost are increased. And the service life of the civil air defense door can be greatly reduced after the coating is damaged, and the direct economic loss is also huge.

The traditional paint in the anticorrosive coating system contains benzene, ester and other solvents, and damages constructors and the environment in the construction process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a people's air defense door external surface anti-corrosion composite coating, its coating is level and smooth, adhesive force is strong, hardness is high, chemical resistance performance and weatherability are good, have solved the people's air defense door that arouses by the circumstances such as anticorrosive coating fracture, ageing, skinning, drop and have not been corrosion-resistant for a long time, problem that the protectiveness is not enough reduces fortune dimension cost and human cost. The coating adopts an environment-friendly diluent as a solvent, does not contain benzene, ester and other non-environment-friendly solvents, and effectively relieves the problems of environmental pollution, harm to human health and the like.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the outer surface anti-corrosion composite coating of the civil air defense door takes a civil air defense door steel plate as a base material layer, and the anti-corrosion composite coating is formed by sequentially compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top; the primer layer is an epoxy zinc-rich primer layer, and the dry film thickness range of the epoxy zinc-rich primer layer is 40-80 μm; the middle paint layer is a reticular polyurethane middle paint layer, and the dry film thickness of the middle paint layer is 150-220 μm; the finish paint layer is an asparagus polyurea finish paint layer, and the dry film thickness of the finish paint layer is 30-50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is more than or equal to 250 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 40 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 200 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 30 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is 270 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 60 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 190 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 80 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 220 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 350 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 40 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 220 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 300 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 60 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 180 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

Further, as a preferable scheme, the dry film thickness of the epoxy zinc-rich primer layer is 80 μm; the dry film thickness of the reticular polyurethane intermediate paint layer is 150 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 280 mu m.

Compared with the prior art, the utility model, beneficial effect lies in: the utility model adopts the anti-corrosion coating structure formed by compounding the epoxy zinc-rich primer layer, the reticular polyurethane intermediate paint layer and the asparagus polyurea finish paint layer, the coating is smooth and level, the adhesive force is strong, the hardness is high, the chemical resistance and the weather resistance are good, the anti-corrosion and anti-corrosion performance and the weather resistance of the outer surface of the civil air defense door are greatly improved, the substrate is ensured not to be corroded for a long time, and the service life is prolonged; meanwhile, the coatings have high adhesive force, so that the firmness of the integral structure is ensured, the complicated repair construction is avoided, and the labor cost is saved.

The coating solvent in the anticorrosive coating structure adopts an environment-friendly solvent without benzene, ester and the like, and does not cause damage to constructors and the environment.

Drawings

Fig. 1 is a schematic view of an anti-corrosion composite coating according to an embodiment of the present invention.

Wherein, 1, a base material layer; 2. an epoxy zinc-rich primer layer; 3. a reticular polyurethane intermediate paint layer; 4. a asparagus polyurea topcoat layer.

Detailed Description

The present invention is described in detail below with reference to the attached drawings:

example 1

As shown in fig. 1, the outer surface anti-corrosion composite coating of the civil air defense door takes a civil air defense door steel plate as a base material layer, and is formed by compounding a primer layer, a middle paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film is 40 mu m; the intermediate paint layer is a reticular polyurethane intermediate paint layer, and the dry film thickness of the intermediate paint layer is 200 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 30 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is 270 mu m.

Example 2

As shown in fig. 1, the outer surface of the civil air defense door is provided with the anticorrosion composite coating, the anticorrosion composite coating takes a civil air defense door steel plate as a base material layer, and the anticorrosion composite coating is formed by compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film is 60 mu m; the middle paint layer is a reticular polyurethane middle paint layer, and the thickness of a dry film is 190 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

Example 3

As shown in fig. 1, the outer surface of the civil air defense door is provided with the anticorrosion composite coating, the anticorrosion composite coating takes a civil air defense door steel plate as a base material layer, and the anticorrosion composite coating is formed by compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film is 80 mu m; the intermediate paint layer is a reticular polyurethane intermediate paint layer, and the dry film thickness of the intermediate paint layer is 220 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 350 mu m.

Example 4

As shown in fig. 1, the outer surface of the civil air defense door is provided with the anticorrosion composite coating, the anticorrosion composite coating takes a civil air defense door steel plate as a base material layer, and the anticorrosion composite coating is formed by compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film is 40 mu m; the intermediate paint layer is a reticular polyurethane intermediate paint layer, and the dry film thickness of the intermediate paint layer is 220 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 300 mu m.

Example 5

As shown in fig. 1, the outer surface of the civil air defense door is provided with the anticorrosion composite coating, the anticorrosion composite coating takes a civil air defense door steel plate as a base material layer, and the anticorrosion composite coating is formed by compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film of the epoxy zinc-rich primer layer is 60 mu m; the intermediate paint layer is a reticular polyurethane intermediate paint layer, and the dry film thickness of the intermediate paint layer is 180 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

Example 6

As shown in fig. 1, the outer surface of the civil air defense door is provided with the anticorrosion composite coating, the anticorrosion composite coating takes a civil air defense door steel plate as a base material layer, and the anticorrosion composite coating is formed by compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top in sequence; the primer layer is an epoxy zinc-rich primer layer, and the thickness range of a dry film is 80 mu m; the middle paint layer is a reticular polyurethane middle paint layer, and the dry film thickness of the middle paint layer is 150 mu m; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 280 mu m.

For the above-mentioned embodiments 1 to 6, the present invention is further explained as follows:

the utility model discloses rich zinc priming paint of epoxy that priming paint layer used is rich zinc priming paint of bi-component epoxy that the applicant independently developed, and its major component is: the epoxy resin, the diluent, the zinc powder, the curing agent, the auxiliary agent, the powder and the like, and has the advantages of quick drying, good leveling property, good adhesive force and the like. The primer utilizes electrochemical reaction, zinc powder preferentially reacts with corrosive media in the air to provide cathodic protection, and thus the anticorrosion effect is achieved. The single coating or the primer in the anti-corrosion composite coating has excellent anti-corrosion performance, and the salt spray resistance of the coating is more than 600h. Meanwhile, the adhesive force to the base material can reach more than 10 MPa. The primer takes an active diluent and an environment-friendly diluent as solvents, is environment-friendly, pollution-free, and friendly to people and environment.

The utility model discloses netted polyurethane intermediate coat that intermediate coat used is a bi-component, high solid content, high performance, thick liquid type polyurethane paint that the applicant independently developed, and its major component is: polyol, isocyanate, diluent, polyether amine, auxiliary agent, powder and the like. Part of the polyhydric alcohol and the polyether amine are selected from trifunctional raw materials, a network structure is formed through a crosslinking reaction with isocyanate, and the mechanical property of the coating is greatly improved due to the existence of hydrogen bonds and polar functional groups. Meanwhile, the intermediate paint has excellent durability, can resist underground high-humidity environment, has high solid content and low VOC (volatile organic compound) after a single-layer thickness reaches 100 mu m of dry film, and is environment-friendly.

The utility model discloses the asparagus polyurea finish paint that finish coat used is the independently developed bi-component polyurea finish paint of a high performance, chemical curing of applicant, and its major component is: polyol, isocyanate, polyaspartic acid resin, an auxiliary agent, powder, color paste and the like. The polyaspartic acid resin has high reaction activity, good weather resistance and excellent solvent resistance, and a paint film obtained by reacting the polyaspartic acid resin with blocked isocyanate is compact, high in glossiness, impact-resistant, wear-resistant, water-resistant and solvent-resistant, and has excellent weather resistance and strong adhesive force. The construction modes such as brushing, rolling or spraying can be adopted, and the operation is simple and easy.

The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that can be conceived by those skilled in the art are all within the scope of the present invention.

Claims

1. The utility model provides a people's air defense door surface anti-corrosion composite coating, anti-corrosion composite coating uses people's air defense door steel sheet as the substrate layer, its characterized in that: the anticorrosion composite coating is formed by sequentially compounding a primer layer, an intermediate paint layer and a finish paint layer which are coated on the civil air defense door from bottom to top; the primer layer is an epoxy zinc-rich primer layer, and the dry film thickness range of the epoxy zinc-rich primer layer is 40-80 μm; the middle paint layer is a reticular polyurethane middle paint layer, and the dry film thickness of the middle paint layer is 150-220 μm; the finish paint layer is an asparagus polyurea finish paint layer, and the thickness of a dry film of the finish paint layer is 30-50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is more than or equal to 250 mu m.

2. The anticorrosive composite coating for the outer surface of the civil air defense door according to claim 1, characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 40 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 200 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 30 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is 270 mu m.

3. The anticorrosive composite coating for the outer surface of the civil air defense door according to claim 1, characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 60 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 190 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

4. The anticorrosive composite coating for the outer surface of the civil air defense door according to claim 1, characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 80 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 220 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 350 mu m.

5. The anticorrosive composite coating for the outer surface of the civil air defense door according to claim 1, characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 40 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 220 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 40 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 300 mu m.

6. The outer surface anticorrosion composite coating for the civil air defense door as claimed in claim 1, which is characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 60 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 180 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 290 mu m.

7. The anticorrosive composite coating for the outer surface of the civil air defense door according to claim 1, characterized in that: the dry film thickness of the epoxy zinc-rich primer layer is 80 mu m; the dry film thickness of the reticular polyurethane intermediate paint layer is 150 mu m, and the dry film thickness of the asparagus polyurea finish paint layer is 50 mu m; the total dry film thickness of the primer, the intermediate paint and the finish paint is equal to 280 mu m.