Antirust alkyd coating for metal piece
By setting up a phosphate conversion film layer and an alkyd coating on the metal parts, combined with an epoxy primer and a polyurethane topcoat, the problem of insufficient adhesion stability of the anti-rust alkyd coating is solved, and stronger protection is achieved Rust and corrosion resistance and weather resistance.
Patent Information
- Application Number
- CN202421046616.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The existing anti-rust alkyd coatings have insufficient adhesion stability on metal parts, making it difficult to effectively prevent corrosion.
A phosphate conversion film layer is provided on the metal parts and an alkyd coating is sprayed on the outside, combining an epoxy primer layer and a polyurethane topcoat layer to form a multi-layer coating structure to improve adhesion and weather resistance.
The multi-layer coating structure significantly improves the anti-rust and corrosion performance, enhances adhesion and weathering performance, ensures long-term stability and durability, especially in harsh environments, and is not easy to fall off.
Smart Images
Figure CN222274427U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coatings, and more specifically to an anti-rust alkyd coating for metal parts. Background Art
[0002] Alkyd coating is a coating with alkyd resin as the main film-forming substance;
[0003] Anti-rust alkyd coating is a type of alkyd coating that is specially designed to prevent metal corrosion. In addition to traditional alkyd resins, it also adds anti-rust pigments (such as red lead, zinc powder, zinc phosphate, etc.), corrosion inhibitors and other additives to enhance its anti-rust performance. These additives can form a protective layer to isolate moisture and oxygen, thereby effectively inhibiting the corrosion process on the metal surface. Anti-rust alkyd coatings are commonly used for anti-corrosion protection of bridges, steel structure buildings, ships, vehicle chassis and various outdoor metal components.
[0004] The existing {publication number: CN214085168U, a corrosion-resistant filling machine connecting rod}, wherein the "iron red alkyd coating of a protective layer is provided on the surface of the base layer" to improve the rust resistance, but the direct attachment method is adopted, resulting in insufficient stability after attachment. Utility Model Content
[0005] The purpose of the utility model is to solve the above technical problems and provide an anti-rust alkyd coating for metal parts.
[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:
[0007] The utility model provides an anti-rust alkyd coating for metal parts, comprising a substrate and an alkyd coating arranged on its outer side, and also comprising a phosphate conversion film layer fixedly attached to the outer side of the substrate, wherein the alkyd coating is arranged outside the phosphate conversion film layer.
[0008] As a preferred technical solution of the utility model, the method further includes an adhesion-enhancing layer between the phosphate conversion film layer and the alkyd coating layer, and the adhesion-enhancing layer is adhered and fixed to the phosphate conversion film layer and the alkyd coating layer at the same time.
[0009] As a preferred technical solution of the utility model, the adhesion-enhancing layer is an epoxy primer layer.
[0010] As a preferred technical solution of the utility model, the invention also includes a weather-resistant layer bonded and fixed outside the alkyd coating.
[0011] As a preferred technical solution of the utility model, the weather-resistant layer is a polyurethane topcoat layer.
[0012] The beneficial effects of the utility model are as follows:
[0013] A phosphate conversion film layer 2 is provided outside the substrate 1 to improve the rust prevention and adhesion of the subsequent alkyd coating 4; an epoxy primer layer is pre-sprayed on the phosphate conversion film layer 2, and then the alkyd coating 4 is sprayed to further improve the adhesion and rust prevention capabilities; a weather-resistant layer 5 is provided outside the alkyd coating 4 to improve the weather resistance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] Reference numerals: substrate-1, phosphate conversion film layer-2, adhesion-promoting layer-3, alkyd coating layer-4, weather-resistant layer-5. DETAILED DESCRIPTION Embodiment 1:
[0016] like Figure 1 As shown, this embodiment proposes: an anti-rust alkyd coating for metal parts, comprising a substrate 1 and an alkyd coating 4 arranged on the outside thereof (the alkyd coating 4 may be an iron red alkyd coating, etc., as shown in the figure, the alkyd coating 4 is arranged above the substrate 1), and the alkyd coating 4 is arranged outside the phosphate conversion film layer 2;
[0017] It also includes a phosphate conversion film layer 2 fixedly attached to the outside of the substrate 1 (the substrate 1 is a metal part, such as a steel product, etc., which can be subjected to phosphating treatment to form a phosphate conversion film layer 2 on its surface), further improving the adhesion of the rust prevention and subsequent alkyd coating 4 coating (in this embodiment, the alkyd coating 4 is fixedly attached to the outside of the phosphate conversion film layer 2, and can be set by spraying or other methods). Embodiment 2:
[0018] like Figure 1 As shown, the difference from Example 1 is that it also includes an adhesion-enhancing layer 3 between the phosphate conversion film layer 2 and the alkyd coating 4, and the adhesion-enhancing layer 3 is simultaneously bonded and fixed to the phosphate conversion film layer 2 and the alkyd coating 4 (as shown in the figure, the top and bottom ends of the adhesion-enhancing layer 3 are respectively bonded and fixed to the alkyd coating 4 and the phosphate conversion film layer 2), and cooperates with the above-mentioned phosphate conversion film layer 2 to further improve the adhesion ability.
[0019] The adhesion-enhancing layer 3 is an epoxy primer layer or the like (i.e., an epoxy primer layer is pre-sprayed on the phosphate conversion film layer 2, and then an alkyd coating layer 4 is sprayed), and cooperates with the above-mentioned phosphate conversion film layer 2 to provide the following functions;
[0020] Enhanced anti-corrosion performance: The phosphate conversion film layer 2 first forms a dense conversion layer on the metal surface. This film can effectively inhibit the electrochemical corrosion reaction on the metal surface. The subsequently applied epoxy primer layer has excellent barrier properties, which can further prevent water, oxygen and other corrosive media from penetrating into the substrate 1, thereby establishing a solid protective barrier between the surface of the substrate 1 and the environment. This double protection greatly enhances the anti-corrosion ability of the entire coating system;
[0021] Improve adhesion: The phosphate conversion film layer 2 is tightly bonded to the metal surface through chemical reaction, providing a good anchoring effect for subsequent coatings; the epoxy primer layer also has extremely strong adhesion properties due to its unique molecular structure and can adhere tightly to the conversion film. This "strong intermolecular link" ensures the long-term stability and durability of the entire coating system, and it is not easy to fall off even in harsh environments. Embodiment 3:
[0022] like Figure 1 As shown, the difference between it and Example 2 is that it also includes a weather-resistant layer 5 bonded and fixed to the outside of the alkyd coating 4 to enhance the weather resistance.
[0023] The weather-resistant layer 5 is a polyurethane topcoat layer, etc., which can be provided by spraying or the like. As the outermost layer, the polyurethane topcoat layer provides excellent weather resistance (including UV resistance), hardness, glossiness and chemical resistance, which can significantly extend the service life of the coating, especially for substrates 1 that are used outdoors or need to maintain appearance quality for a long time.
[0024] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An anti-rust alkyd coating for metal parts, comprising a substrate (1) and an alkyd coating (4) disposed on the outer side thereof, characterized in that: It also includes a phosphate conversion film layer (2) bonded and fixed to the outside of the substrate (1), and an alkyd coating (4) is arranged outside the phosphate conversion film layer (2).
2. The anti-rust alkyd coating for metal parts according to claim 1, characterized in that: It also includes an adhesion-enhancing layer (3) located between the phosphate conversion film layer (2) and the alkyd coating layer (4), and the adhesion-enhancing layer (3) is bonded and fixed to the phosphate conversion film layer (2) and the alkyd coating layer (4) at the same time.
3. The anti-rust alkyd coating for metal parts according to claim 2, characterized in that: The adhesion-promoting layer (3) is an epoxy primer layer.
4. The anti-rust alkyd coating for metal parts according to claim 3, characterized in that: It also includes a weather-resistant layer (5) bonded and fixed to the outside of the alkyd coating (4).
5. The anti-rust alkyd coating for metal parts according to claim 4, characterized in that: The weather-resistant layer (5) is a polyurethane topcoat layer.