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.
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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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