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Coating composition for hydrophilic treatment of air-conditioning parallel flow heat exchanger

An exchanger and hydrophilization technology, which is applied in the field of coating composition and its preparation for hydrophilization treatment of air-conditioning parallel flow heat exchangers, can solve the problems of construction adaptability and performance that are difficult to meet the requirements, etc.

Active Publication Date: 2014-02-05
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, there is a big difference between the coating used to hydrophilize the parallel flow heat exchanger and the coating used to treat aluminum foil. The coatings currently on the market are difficult to meet the requirements in terms of construction adaptability and performance.

Method used

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  • Coating composition for hydrophilic treatment of air-conditioning parallel flow heat exchanger
  • Coating composition for hydrophilic treatment of air-conditioning parallel flow heat exchanger
  • Coating composition for hydrophilic treatment of air-conditioning parallel flow heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Coating A consists of the following components (in g):

[0093]

[0094] The total amount of the above components is 100.

[0095] Acrylic resin is composed of the following components by mass percentage

[0096] Monomer 80

[0097] Azobisisobutyronitrile 5

[0098] Mixed solvents 15

[0099] The preparation process of acrylic resin is as follows: mix the monomers (methacrylic acid, methyl methacrylate, butyl acrylate, and styrene in a mass ratio of 2:3:3:2), and add azobisisobutyronitrile Mix to obtain a mixture; add a mixed solvent of butanol, ethylene glycol butyl ether, and isopropanol (the mixing mass ratio is 3:5:2) to the reaction kettle, heat up to 80°C and reflux, add the above mixture dropwise for 2 hours After the internal dropwise addition is completed, the temperature is lowered and the material is discharged after 3 hours of heat preservation, and the resin has a solid content of 48%;

[0100]The preparation process of coating A is as follows: take...

Embodiment 2

[0112] Coating A consists of the following components (in g):

[0113]

[0114]

[0115] The total amount of the above components is 100.

[0116] Acrylic resins consist of the following components (in grams):

[0117] Monomer 30

[0118] Benzoyl Peroxide 1.5

[0119] n-butanol balance

[0120] The total amount of the above components is 100.

[0121] The preparation process of acrylic resin is as follows: the preparation of coating A: monomer acrylic acid, butyl methacrylate, hydroxyethyl acrylate are mixed by the mass ratio of 6:2:2, add benzoyl peroxide and continue to mix; Add n-butanol into the kettle, raise the temperature to 110°C and reflux, add the mixture of the above-mentioned monomer and initiator dropwise, and drop evenly for 3 hours. Material, resin solid content 30%;

[0122] The preparation process of paint A is as follows: take acrylic resin, add full methyl etherified amino resin and ammonium dodecylbenzene sulfonate, finally add wetting agent AQ3...

Embodiment 3

[0131] Coating A consists of the following components (in g):

[0132]

[0133] The total amount of the above components is 100.

[0134] Preparation of coating A: CrCl 3 Dissolve in water to prepare a 10% solution, add 0.01g tartaric acid, 0.1g phosphoric acid, 3g ethylene glycol monobutyl ether, 4g ethanol, 1g hydrofluoric acid (40%), and 0.3g fluorosurfactant F-1157 , the remaining water, and finally add 12g of non-ionic polyurethane resin PUD-1110 (35%, Shanghai Sisheng Polymer Material Co., Ltd.), stir well and set aside.

[0135] Coating B consists of the following components (in g):

[0136]

[0137] The total amount of the above components is 100.

[0138] Organic resin is composed of the following components (in g):

[0139]

[0140] The preparation process of the organic resin is as follows: the monomer acrylic acid, N-methylol acrylamide, and diacetone acrylamide are mixed uniformly in the ratio of 6:3:1 (mass ratio); water and 2% thiosulfuric acid are ...

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Abstract

The invention belongs to the technical field of hydrophilic coatings and discloses a coating composition for hydrophilic treatment of an air-conditioning parallel flow heat exchanger. The coating composition comprises a coating A and a coating B, wherein the coating A is an inorganic system A-1 which takes inorganic substances as main components or an organic system A-2 which takes organic substances as main components; the coating B is an inorganic system B-1 which takes inorganic substances as main components or an organic system B-2 which takes organic substances as main components. The coating A and the coating B are sequentially coated on the surface of a heat exchanger workpiece in a dip-coating, curtain coating or spraying mode and are sequentially roasted and cured, the heat exchanger can be endowed with lasting hydrophilcity, the formed coating is excellent in hydrophilic performance, high in adhesive force, permanent and effective; the coating is high in corrosion resistance, and the service life of the heat exchanger can be greatly prolonged; the coating is excellent and lasting in hydrophilic performance and high in adhesive force, and the energy efficiency ratio of the heat exchanger can be improved.

Description

technical field [0001] The invention belongs to the technical field of hydrophilic coatings, in particular to a coating composition used for hydrophilic treatment of air-conditioning parallel flow heat exchangers, a preparation method and application thereof. Background technique [0002] Parallel flow (micro-channel) heat exchanger is a high-efficiency and compact heat exchanger that has been used in the automotive industry for many years. It is an alternative to tube-belt heat exchangers. The advantages of high reliability are gradually becoming the mainstream of heat exchangers. With the rise of raw material prices, the continuous improvement of energy efficiency standards for air-conditioning products, and the continuous improvement of environmental protection requirements, parallel flow heat exchangers are gradually being applied in the field of household and commercial air conditioners. [0003] The heat exchanger is an important part of the air conditioner, and its f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/02C09D105/04C09D175/04C09D161/24C09D161/32C09D163/00C09D7/12C09D5/08B32B27/08
CPCY02P20/10
Inventor 陈兴耀黄艳轶李月峰魏小飞刘志明
Owner GUANGZHOU HUMAN CHEM
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