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Hydrophilic antibacterial coating for automobile air conditioner evaporator and preparation method thereof

An antibacterial coating, automotive air conditioning technology, applied in coatings, antifouling/underwater coatings, biocide-containing paints, etc. Long-lasting antibacterial properties and excellent water resistance

Active Publication Date: 2022-04-01
SHANXI KEQI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing hydrophilic coating is easy to swell or dissolve in water due to its good hydrophilicity, and it is very easy to fall off under long-term corrosion of water.

Method used

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  • Hydrophilic antibacterial coating for automobile air conditioner evaporator and preparation method thereof
  • Hydrophilic antibacterial coating for automobile air conditioner evaporator and preparation method thereof
  • Hydrophilic antibacterial coating for automobile air conditioner evaporator and preparation method thereof

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specific Embodiment

[0026] Specific embodiment preparation method:

[0027] 1) Preparation of nano-zinc oxide dispersion: place nano-zinc oxide, dispersant and deionized water in a sand mill for grinding to obtain nano-zinc oxide dispersion;

[0028] 2) Preparation of coating solution: Weigh each component except polyvinylpyrrolidone as described in Table 1, then carry out polymerization reaction at 80-100°C for 2-4h, and then cool down to room temperature naturally to obtain a mixed liquid ; Mix the obtained mixed liquid with the weighed polyvinylpyrrolidone at room temperature to obtain a coating liquid;

[0029] 3) Preparation of hydrophilic antibacterial coating: immerse the evaporator in the coating solution obtained in 2) and dry it, place it in an environment of 100-200°C and bake it for 3-5min to form a 1-5μm thick coating on the evaporation surface Hydrophilic antibacterial coating on the device.

[0030] The comparative examples described in the application are all designed with re...

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Abstract

The invention discloses a method for preparing a hydrophilic antibacterial coating for an automobile air-conditioning evaporator. The nano-zinc oxide dispersion, a dispersant and water are sand-milled to obtain a nano-zinc oxide dispersion, and then the nano-zinc oxide dispersion, silicon The sol, lithium silicate, silane coupling agent, sodium acrylate and peroxide are polymerized and cooled, mixed with polyvinylpyrrolidone at room temperature to obtain a coating solution, and the evaporator coating solution is taken out after drying and Baking to form a hydrophilic antibacterial coating coated on the evaporator. This preparation method utilizes the hydrophilic and antibacterial properties of nano-zinc oxide, and combines silica sol, lithium silicate and silane coupling agent to form a coating with excellent water resistance. Hydrophilic coating, which makes the hydrophilic and antibacterial properties of the hydrophilic coating on the surface of the evaporator more durable.

Description

technical field [0001] The invention relates to an antibacterial coating and a preparation method thereof, in particular to a hydrophilic antibacterial coating for an automobile air-conditioning evaporator and a preparation method thereof, belonging to the technical field of preparation of functional coatings. Background technique [0002] The car air conditioner evaporator is the refrigeration part of the car air conditioner. The refrigerant is passed through the evaporator to cool the whole evaporator. The hot air is cooled by the micro-channel aluminum foil fins of the evaporator to form cold air and enter the car. At the same time, due to the moisture in the air also When condensed, water droplets and water bridges will be formed on the fins. These water droplets and water bridges are easy to be blown out by the wind and increase wind resistance. In addition, because the evaporator is in a humid state for a long time, it is easy to breed bacteria and mold, and produce ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D139/06C09D5/14C09D7/61C09D7/63
CPCC09D133/02C09D5/14C09D7/61C09D7/63C08K2003/2296C08K2201/011C08L39/06C08K13/02C08K3/22C08K3/36C08K3/34C08K5/5435C08K5/544C08K5/5425
Inventor 廖宇涛常彬彬杨光林郭英鹏邢宇
Owner SHANXI KEQI TECH CO LTD
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