CN217969087U

CN217969087U - High-weather-resistance PVF perfluorinated pre-roller-coated metal plate

Info

Publication number: CN217969087U
Application number: CN202221578098.5U
Authority: CN
Inventors: 姚恒军
Original assignee: Suzhou Pilot Advanced Material Co ltd
Current assignee: Suzhou Pilot Advanced Material Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-12-06
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a high resistant PVF perfluor of waiting roller coat metal sheet in advance, including the metal sheet structure, the metal sheet structure includes epoxy back paint layer, metal substrate, chemical passivation layer, priming paint layer, PVF perfluor intermediate coat, PVF perfluor finish varnish layer in proper order. The three-layer coating structure provided with the primer, the finish paint and the varnish and the double-layer perfluorinated coating provided with the PVF perfluorinated intermediate coating and the PVF perfluorinated finishing varnish layer ensure that a paint film on the surface of the metal base material is more compact and has good chemical inertia, hydrophobicity and wear resistance, and the aging resistance and the color stability of the metal plate structure are improved. The PVF perfluorinated middle coating and the PVF perfluorinated finishing varnish layer are adopted to replace the traditional PVDF fluorocarbon coating, PVF can form a film independently, an acrylic resin plasticizer is not required to be added, the influence on the service life of the metal structure plate due to the weather resistance and chemical resistance of the acrylic resin which are weaker than those of fluororesin is avoided, the outdoor quality assurance can reach more than 50 years, and the high weather resistance of the PVF perfluorinated middle coating and the PVF perfluorinated finishing varnish layer enables the PVF perfluorinated finishing varnish layer to be widely applied to the fields of aerospace, building curtain walls, coastal buildings and the like.

Description

High-weather-resistance PVF perfluorinated pre-roller-coated metal plate

Technical Field

The utility model relates to a color-coated sheet technical field especially relates to a high resistant PVF perfluor is roller coat metal sheet in advance.

Background

The color coated steel plate (color coated plate for short) is mainly made up by using metal strip steel as base material and coating or laminating various organic coatings or plastic films on the surface of the base material. The color-coated sheet is widely applied to industries such as buildings, household appliances, automobiles, transportation and the like, and the social demand is continuously increased. The existing fluorocarbon metal color-coated sheet has poor weather resistance and chemical resistance, is easy to age, and generally has outdoor quality guarantee of only 15-30 years.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the present invention is achieved by the following technical solutions.

The utility model provides a high resistant PVF perfluor of waiting is roller coat metal sheet in advance, including the metal sheet structure, the metal sheet structure includes epoxy back paint layer, metal substrate, chemical passivation layer, priming paint layer, PVF perfluor floating coat, PVF perfluor finish varnish layer in proper order.

Preferably, the periphery of the metal plate structure is bent to form a folded edge structure.

Preferably, at least one reinforcing rib is provided between the two opposed edge folding structures.

Preferably, the metal base material is provided with a clamping groove at a position corresponding to the reinforcing rib, and the reinforcing rib is provided with a clamping protrusion matched with the clamping groove.

Preferably, the depth of the clamping groove is 0.5cm-1cm.

Preferably, the metal base material and the reinforcing rib are connected by a fastener.

Preferably, the chemical passivation layer is a chromate passivation layer with a thickness of 1-3 μm; the primer layer is a polyester layer and has a thickness of 5-10 μm.

Preferably, the thickness of the PVF perfluoro intermediate coating is 15-18 μm.

Preferably, the thickness of the PVF perfluorooverprint varnish layer is 10-15 μm.

Preferably, the metal plate structure is selected from any one of aluminum alloy, stainless steel and aluminum-zinc-plated steel plate.

Compared with the prior art, the novel beneficial effects are that:

the utility model provides a high resistant time PVF perfluor is roller coat metal sheet in advance, set up the priming paint, the finish paint, the three of varnish scribble the coating structure and set up PVF perfluor floating coat, the double-deck perfluor coating of PVF perfluor cover varnish layer, make the paint film on metal substrate surface compacter and have good chemical inertia, the hydrophobicity, the wearability, the ageing resistance and the color stability of metal plate structure have been improved, furthermore, adopt PVF perfluor floating coat, PVF perfluor cover varnish layer replaces traditional PVDF fluorocarbon coating, PVF can form a film alone, need not add the acrylic resin plasticizer, avoid influencing the life of metal structure board because of acrylic resin is weak in the weatherability and the chemical resistance of fluororesin, outdoor quality guarantee can reach more than 50 years, its high resistant time makes its wide application in aerospace, building curtain, coastal building field.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clear and clear, and to implement them according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings thereof.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a layer structure of the metal plate structure of the present invention;

FIG. 2 is an exploded view of the structure of the metal plate structure of the present invention;

fig. 3 is a schematic structural diagram of a card slot on a metal plate structure of the present invention;

fig. 4 is a schematic perspective view of the reinforcing rib of the present invention.

In the figure: 100. a metal plate structure;

10. an epoxy back paint layer; 20. a metal substrate; 21. a card slot; 30. a chemical passivation layer; 40. a primer layer; 50. a PVF perfluoro mid-coat; 60. a PVF perfluorinated finishing varnish layer; 70. a flanging structure; 80. reinforcing ribs; 81. and clamping the protrusion.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a novel system. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the following embodiments or technical features can be used to form a new embodiment without conflict.

Example 1

The utility model provides a high resistant time PVF perfluor is roller coat metal sheet in advance, as shown in figure 1, including metal sheet structure 100, metal sheet structure 100 includes epoxy back paint layer 10, metal substrate 20, chemical passivation layer 30, priming paint layer 40, PVF perfluor floating coat 50, PVF perfluor finishing varnish layer 60 in proper order.

In the embodiment, a three-coat coating structure with primer, finish and varnish and a double-layer perfluorinated coating structure with a PVF perfluorinated intermediate coat 50 and a PVF perfluorinated finishing varnish 60 make the paint film on the surface of the metal substrate 20 more compact and have good chemical inertness, hydrophobicity and wear resistance, and the aging resistance and color stability of the metal plate structure 100 are improved, in addition, the PVF perfluorinated intermediate coat 50 and the PVF perfluorinated finishing varnish 60 are adopted to replace the traditional PVDF fluorocarbon coating, PVF can form a film independently, an acrylic resin plasticizer is not required to be added, the service life of the metal structure plate 100 is prevented from being influenced due to the weather resistance and chemical resistance of acrylic resin, ultraviolet rays, high-temperature and cold-heat cycles, moisture and atmospheric pollutants, no discoloration and no light loss are avoided, the compact paint film surface has no defects of pinholes, cracks and the like, the outdoor quality guarantee can reach more than 50 years, and the high weather resistance of the three-coat coating structure can be widely applied to the fields of aerospace, building curtain walls, coastal buildings and the like.

Due to the general fluidity of the PVF perfluorinated coating, the pre-roller coating with feeding is adopted for production during color coating, so that uniform coating is ensured.

In one embodiment, as shown in fig. 2, the edge folding structure 70 is formed by folding the periphery of the metal plate structure 100 to enhance the structural strength of the periphery of the metal plate structure 100, and the edge folding structure 70 forms the mounting surface of the metal plate structure 100 to enhance the mounting load-bearing capability of the metal plate structure 100.

Further, at least one reinforcing rib 80 is disposed between the two opposite flange structures 70 to further improve the bending property of the metal plate structure 100.

Further, as shown in fig. 2, 3, and 4, a clamping groove 21 is disposed at a position of the metal base material 20 corresponding to the position of the reinforcing rib 80, and the reinforcing rib 80 is provided with a clamping protrusion 81 matched with the clamping groove 21. Specifically, the engaging groove 21 cooperates with the engaging protrusion 81 to form a positioning and mounting function of the reinforcing rib 80, thereby simplifying assembly and speeding up processing.

Furthermore, the depth of the clamping groove 21 is 0.5cm-1cm, and the clamping stability is certain, so that the operability of pre-positioning installation is improved.

Further, the metal base material 20 and the reinforcing rib 80 are connected by a fastener, so that the installation is convenient and firm.

In one embodiment, the chemical passivation layer 30 is a chromate passivation layer with a thickness of 1-3 μm; the primer layer 40 is a polyester layer with the thickness of 5-10 mu m and the PMT of 215-225 ℃, and is continuously rolled by a roller, baked and solidified, and cooled by water spraying and dried by hot air.

In one embodiment, the thickness of the PVF perfluoro intermediate coating layer 50 is 15-18 μm, the PMT is 232-241 ℃, and the PVF perfluoro intermediate coating layer is continuously rolled, baked and cured by rolling, and dried by water spraying, cooling and hot air.

In one embodiment, the thickness of the PVF perfluorinated finishing varnish layer 60 is 10-15 mu m, the PMT is 254-260 ℃, the continuous roller coating baking solidification, and the water spraying cooling hot air drying are carried out.

In one embodiment, the thickness of the epoxy back paint layer 10 is 5-10 μm, the PMT is 220-230 ℃, the epoxy back paint layer is continuously roller-coated, baked and cured, and then is dried by water spraying, cooling and hot air

In an embodiment, the metal plate structure 100 is selected from any one of aluminum alloy, stainless steel, and aluminum-zinc-plated steel. Specifically, when the metal plate structure 100 is an aluminum-zinc-plated steel plate, the aluminum-zinc-plated steel plate adopts a structure with a single-sided plating layer of 100g or more, so as to improve the corrosion resistance of the base material. Preferably, the metal plate structure 100 is an aluminum plate having a thickness of 2.0-3.0 mm.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the novel structure can be smoothly implemented by a person with ordinary skill in the art according to the drawings and the description; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to those of the present invention, are also within the scope of the present invention.

Claims

1. The utility model provides a high resistant time PVF perfluor is roller coat metal sheet in advance, includes metal sheet structure (100), its characterized in that, metal sheet structure (100) include epoxy back paint layer (10), metal substrate (20), chemical passivation layer (30), priming paint layer (40), PVF perfluor middle coat (50), PVF perfluor finish varnish layer (60) in proper order.

2. The highly weatherable PVF perfluor pre-roll coated metal sheet according to claim 1, wherein said metal sheet structure (100) is folded peripherally to form a hem structure (70).

3. The highly weatherable PVF perfluor pre-roll coated metal sheet according to claim 2, wherein at least one reinforcing rib (80) is provided between two opposing edge folding structures (70).

4. The high-weather-resistance PVF perfluorinated pre-roll-coated metal plate as claimed in claim 3, wherein a clamping groove (21) is formed in a position, corresponding to the reinforcing rib (80), of the metal base material (20), and the reinforcing rib (80) is provided with a clamping protrusion (81) matched with the clamping groove (21).

5. The highly weatherable PVF perfluor pre-roll coated metal sheet according to claim 4, wherein said grooves (21) have a depth of 0.5cm to 1cm.

6. The highly weatherable PVF perfluor pre-roll coated metal sheet according to claim 4, wherein said metal substrate (20) and said reinforcing ribs (80) are connected by fasteners.

7. The highly weatherable PVF perfluor pre-roll coated metal sheet according to anyone of claims 1 to 6, characterized in that said chemical passivation layer (30) is a chromate passivation layer with a thickness of 1-3 μm; the primer layer (40) is a polyester layer and has a thickness of 5-10 μm.

8. The highly weatherable PVF perfluor pre-roll coated metal sheet according to any of claims 1 to 6, characterized in that the PVF perfluor middle coating (50) has a thickness of 15 to 18 μm.

9. The highly weatherable PVF perfluor pre-roll coated metal sheet according to any of claims 1 to 6, wherein the PVF perfluor finishing varnish layer (60) thickness is 10-15 μ ι η.

10. The highly weatherable PVF perfluor pre-roll coated metal sheet according to any of claims 1 to 6, wherein said metal sheet structure (100) is selected from any of aluminum alloy, stainless steel, aluminum-zinc-plated steel.