CN212610386U - Stone-impact-resistant water-based coating for automobile body - Google Patents

Abstract

The utility model provides a car body is with waterborne coating of resistant stone impact, including electrophoresis lacquer coating, waterborne floating coat, waterborne color coat and waterborne highlight varnish coating, electrophoresis lacquer coating coats on the car body, waterborne floating coat coating coats and is in on the electrophoresis lacquer coating, waterborne color coat coating coats and is in on the waterborne floating coat, waterborne highlight varnish coating then coats the top, wherein: the thickness of the electrophoretic paint coating is 15-35 mu m; the thickness of the water-based floating coat is 25-55 μm; the thickness of the water-based colored paint coating is 15-35 mu m; the thickness of the water-based high-gloss varnish coating is 30-60 mu m. Compared with the prior art, the utility model discloses can overcome the high-speed in-process of traveling effectively, the impact of the small stone piece of arousing to automobile body to this protects the electrophoresis lacquer coating, avoids the car to rust, and makes the life of car prolong greatly.

Description

Stone-impact-resistant water-based coating for automobile body

Technical Field

The utility model belongs to the technical field of environmental protection water based paint coating technique and specifically relates to indicate a water based coating of stone impact resistance for automobile body.

Background

In the modern society, the automobile industry develops rapidly, and the automobile plays a very important role in national economic development. China is the country with the largest automobile holding capacity in the world. Because the national environmental protection policy is more and more strict, the traditional solvent-based coating can not meet the emission requirement more and more. Aqueous coatings are becoming increasingly popular. While green environmental protection is pursued, the automotive industry is also considering light weight, comfort, power, safety, high speed and durability. Durability, i.e. service life, is an objective of cumin in the automotive industry. When the automobile runs on the road surface at a high speed, small stones on the road are difficult to avoid being stirred up by the tire, so that the automobile body is impacted by the small stones to cause the damage of a paint film and influence on the appearance of the automobile. Over time, the automobile body will rust gradually due to the damage of the electrophoretic paint coating, and the service life of the automobile is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water based coating that car body was hit with resistant stone can overcome the high-speed in-process of traveling effectively, and the impact of the small stone piece of arousing is to car body to this protects the electrophoresis lacquer coating, avoids the car to rust, and makes the life of car prolong greatly.

The utility model discloses a water based coating of stone impact resistance for automobile body, including electrophoresis lacquer coating, waterborne floating coat, waterborne color coat and waterborne highlight varnish coating, the coating of electrophoresis lacquer coating is on automobile body, the coating of waterborne floating coat is in on the electrophoresis lacquer coating, the coating of waterborne color coat is in on the waterborne floating coat, waterborne highlight varnish coating then coats the top, wherein:

the thickness of the electrophoretic paint coating is 15-35 mu m; the thickness of the water-based floating coat is 25-55 μm; the thickness of the water-based colored paint coating is 15-35 mu m; the thickness of the water-based high-gloss varnish coating is 30-60 mu m.

Preferably, the electrophoretic paint coating consists of a modified aqueous epoxy resin dispersion and a blocked isocyanate.

Preferably, the aqueous floating coat is composed of aqueous polyurethane dispersion, amino resin and pigment and filler.

Preferably, the water-based colored paint coating is composed of water-soluble polyester, water-based acrylic emulsion, water-based polyurethane dispersoid, amino resin, color paste, auxiliary agent and film-forming auxiliary agent.

Preferably, the aqueous high-gloss varnish coating consists of an aqueous hydroxy acrylic acid dispersion, an amino resin, an auxiliary agent and deionized water.

Compared with the prior art, the utility model discloses a water based coating that automobile body was hit with resistant stone can overcome the high-speed in-process of traveling effectively, and the impact of the small stone piece of arousing to automobile body protects the electrophoresis lacquer coating with this, avoids the car to rust, and makes the life of car prolong greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a stone-impact-resistant water-based coating for an automobile body according to an embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the following embodiments and drawings are applied to clearly and completely describe the technical solution protected by the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

In the description of the present invention, the terms "left", "right", "center", "front" and "rear" indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific position, and thus should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Please refer to fig. 1, which is a schematic structural diagram of a stone-impact resistant water-based coating for an automobile body according to an embodiment of the present invention.

The utility model provides a car body is with waterborne coating of resistant stone chip, including electrophoresis lacquer coating 2, waterborne floating coat coating 3, waterborne highlight varnish coating 4 and waterborne highlight varnish coating 5. The electrophoretic paint coating 2 is coated on the automobile body 1, the water-based floating coat 3 is coated on the electrophoretic paint coating 2, the water-based high-gloss varnish coating 4 is coated on the water-based floating coat 3, and the water-based high-gloss varnish coating 5 is coated on the top.

The electrophoretic paint coating 2 is coated on the automobile body 1, and the electrophoretic paint coating 2 consists of modified waterborne epoxy resin dispersoid and closed isocyanate which needs to be baked and dried at high temperature. The electrophoretic paint coating 2 provides strong adhesion on a metal substrate, and has excellent salt spray resistance, excellent adhesion and excellent chemical resistance. Preferably, the thickness of the electrodeposition paint coating layer 2 is 15 to 35 μm, and more preferably, the thickness of the electrodeposition paint coating layer 2 is 20 to 30 μm.

The waterborne floating coat 3 is coated on the electrophoretic paint coating 2, the waterborne floating coat 3 is composed of waterborne polyurethane dispersoid, amino resin, pigment and filler, auxiliary agent and film-forming auxiliary agent, and the waterborne floating coat also needs to be baked and dried at high temperature. The water-based intercoat coating 3 provides adhesion with the electrophoretic paint coating 2, and is excellent in sanding property and stone chip resistance, preferably, the water-based intercoat coating 3 has a thickness of 25-55 μm, and further, the water-based intercoat coating 3 has a thickness of 35-45 μm.

The water-based colored paint coating 4 is coated on the water-based middle coating 3, and the water-based colored paint coating 4 consists of water-soluble polyester, water-based acrylic emulsion, water-based polyurethane dispersoid, amino resin, color paste, an auxiliary agent and a film-forming auxiliary agent. The coating only needs low-temperature dehydration. The water-based colored paint coating 4 provides adhesion with the water-based middle coating 3, and the coating has good covering power and rich and colorful colors. The coating is easy to color and meet the requirements of the market for various colors. Preferably, the thickness of the aqueous pigmented paint coat 4 is 15 to 35 μm, and further, the thickness of the aqueous high gloss varnish coat 4 is preferably 18 to 25 μm.

The water-based high-gloss varnish coating 5 is arranged on the uppermost part of the coating and consists of water-based acrylic acid dispersoid, amino resin, auxiliary agent and deionized water, and the coating is a single-component system and can be wetted by wet-on-wet with a water-based colored paint coating 4 with any color and then baked at high temperature. The coating has high gloss, good fullness, good weather resistance and good chemical resistance. Preferably, the thickness of the aqueous high gloss varnish coating 5 is 30 to 60 μm, and further, the thickness of the aqueous high gloss varnish coating 5 is preferably 40 to 50 μm.

Compared with the prior art, the beneficial effects of the utility model are that: all coatings are aqueous systems, the aqueous coating systems have low VOC content and no pungent smell, and the electrophoretic paint coating provides strong adhesive force on a metal substrate, has excellent salt spray resistance, excellent adhesive force and excellent chemical resistance. The waterborne middle coating provides adhesion with an electrophoretic paint coating, and is excellent in sanding property and stone impact resistance. The water-based colored paint coating provides adhesion with the water-based middle coating, and the coating has good covering power and rich and colorful colors. The coating is easy to color and meet the requirements of the market for various colors. The water-based high-gloss varnish has high coating gloss, good fullness, good weather resistance and good chemical resistance. The composite coating has excellent salt spray resistance and stone impact resistance, and can completely and effectively overcome the impact of small stone blocks excited to an automobile body in the high-speed driving process, so as to protect the electrophoretic paint coating, avoid the rusting of the automobile and greatly prolong the service life of the automobile.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (1)

1. The utility model provides a car body is with waterborne coating of resistant stone chip which characterized in that, includes electrophoresis lacquer coating, waterborne floating coat, waterborne color coat and waterborne highlight varnish coating, electrophoresis lacquer coating is coated on the car body, waterborne floating coat is coated in on the electrophoresis lacquer coating, waterborne color coat is coated in on the waterborne color coat, waterborne color coat is coated in on the waterborne floating coat, waterborne highlight varnish coating then coats the top, wherein:

the thickness of the electrophoretic paint coating is 15-35 mu m; the thickness of the water-based floating coat is 25-55 μm; the thickness of the water-based colored paint coating is 15-35 mu m; the thickness of the water-based high-gloss varnish coating is 30-60 mu m.

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