Water-based antimicrobial moldproof hydrophilic paint for heat exchanger fin surface treatment

Abstract

The invention discloses a water-based antimicrobial moldproof hydrophilic paint for heat exchanger fin surface treatment. The paint comprises 3-30% of high molecular compound containing hydrophilic group, 0.05-1% of inorganic nano material with antibacterial action, 0.3-5% of curing agent, 0.02-0.2% of leveling agent and 2-10% of cosolvent. The inorganic nano material with antibacterial action is composed of 2-10% of nano oxide, 0.1-2% of silver salt or nano silver solution, 0.1-2% of reducer, 0.1-1% of stabilizer and the balance of water. Since the inorganic nano material with antibacterial action has high stability in the system, the antimicrobial and moldproof properties and hydrophilicity do not attenuate after the processing technique, and can last for a long time in the application process. The paint has the advantages of low addition amount and high cost performance, and does not influence the later working properties.

Description

technical field [0001] The invention relates to a water-based coating, in particular to a water-based antibacterial, mildew-proof and hydrophilic coating used for the surface treatment of heat exchanger fins. Background technique [0002] In recent years, with the continuous promotion of national policies and the continuous popularization of energy-saving, environmental protection, and low-carbon concepts, high-efficiency energy-saving has become the mainstream of the development of the air-conditioning industry. As an important part of air conditioners, the high performance of heat exchangers has become the general trend. [0003] The surface of the fins of the heat exchanger is generally hydrophilized. After the treatment, the surface of the fins is hydrophilic, so that the condensed water attached to it and the dissolved water during defrosting can quickly flow away along the surface, thereby Avoid forming a "water bridge" between the fins to block the air duct and impro...

AI Technical Summary

Problems solved by technology

However, because silver ions are easy to dissolve and cause loss, it is difficult to achieve the persistence of antibacterial properties, that is, it is difficult to maintain antibacterial properties during post-processing and use.

On the other hand, silver ions are easily reduced, and their presence can easily lead to discoloration and even precipitation

[0010] At present, the hydrophilic coating products on the market rarely have antibacterial and antifungal properties, and some only have initial antibacterial properties, which are difficult to maintain during post-processing and actual use.

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