Aluminum fins
A technology of fins and aluminum plates is applied in the field of aluminum fin materials for heat exchangers, which can solve the problems of hindering the heat exchange function of heat exchangers, reducing hydrophilicity, and easily blocking fins.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 approach
[0031]
[0032] like figure 1 As shown, the fin material 10 of the present invention includes an aluminum plate or an aluminum alloy plate (hereinafter referred to as aluminum plate 1 ), a corrosion-resistant film layer 2 and a hydrophilic film layer 3 formed on the surface of the aluminum plate 1 in this order. Furthermore, the corrosion-resistant film layer 2 contains a corrosion-resistant resin and a first crosslinking agent 6, and the ratio of the solid content of the first crosslinking agent 6 to the total solid content of the corrosion-resistant resin and crosslinking agent 6 is 0.2. % or more, the hydrophilic film layer 3 contains a polymer having a carboxyl group or the like. Each configuration will be described below.
[0033] (aluminum plate)
[0034] The aluminum plate 1 used in the present invention is a plate made of aluminum or an aluminum alloy. The aluminum or aluminum alloy is not particularly limited, but as an example, aluminum of the alloy type 1000 sp...
no. 2 approach
[0051] like figure 2 As shown, the fin material 10 preferably further includes the lubricating coating layer 4 made of a resin composition (lubricating resin composition) containing a lubricating resin on the hydrophilic coating layer 3 .
[0052] (lubricating film layer)
[0053] The lubricating film layer 4 is preferably formed on the surface of the hydrophilic film layer 3 . Thereby, the friction coefficient of the fin material 10 can be reduced, and as a result, the press formability at the time of processing into the fin of a heat exchanger is further improved. As the lubricating resin, it is preferable to contain at least one selected from the group consisting of polyethylene glycol (PEG), carboxymethylcellulose (CMC) and alkali metal salts thereof (CMC alkali metal salts). Among them, polyethylene glycol and sodium carboxymethylcellulose are more preferably used in combination. Thereby, film formability and lubricity (press formability) become more favorable. The m...
no. 3 approach
[0056] like image 3 As shown, it is preferable to provide a lubricating film layer 4 a composed of a lubricating resin composition further containing the second crosslinking agent 7 on the hydrophilic film layer 3 .
[0057] The second crosslinking agent 7 is more preferably one or more selected from water-soluble epoxy resins, water-soluble carbodiimide compounds, water-dispersible carbodiimide compounds, and water-soluble oxazoline group-containing resins. By making the lubricating coating layer 4a contain the second crosslinking agent 7, which crosslinks with the carboxyl group in the structure of the hydrophilic resin forming the hydrophilic coating layer 3 as the base layer, the hydrophilic The adhesion of the water-based film layer 3 to the aluminum plate 1 is further improved. Thereby, the hydrophilicity of the fin material 10 is further improved. At the same time, the lubricating film layer 4a protects the hydrophilic film layer 3, whereby the durability of the hydr...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| Adhesion amount | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More