A kind of waterproof and heat-resistant exterior wall paint and preparation method thereof
An exterior paint, heat-resistant technology
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Embodiment 1
[0007] (1) First, set the temperature of the reaction tank to 110°C, take 38kg of ethylene-tetrafluoroethylene copolymer, 10kg of hydroxypropyl cellulose, 12kg of diethyl carbonate, and 16kg of polyurethane. Stir the ingredients, the speed of the stirrer is 200rpm, and the time is 25min; (2) Add 23kg of oleic acid, 6kg of heptadecanoic acid, and 6kg of ethyl acetoacetate, and stir with the stirrer for 15min after adding, at a speed of 150rpm ; (3) ultrasonically treat the mixed paint with ultrasonic power of 450w for 10 minutes; (4) shear the ultrasonically treated paint with a shear speed of 5000rpm for 20min to prepare the paint.
Embodiment 2
[0009] (1) First, set the temperature of the reaction tank to 100°C, take 36kg of ethylene-tetrafluoroethylene copolymer, 12kg of hydroxypropyl cellulose, 14kg of diethyl carbonate, and 17kg of polyurethane. Stir the ingredients, the speed of the stirrer is 150rpm, and the time is 30min; (2) Add 21kg of oleic acid, 7kg of heptadecanoic acid, and 8kg of ethyl acetoacetate, and stir with the stirrer for 10min after adding, with a speed of 100rpm ; (3) Ultrasonic treatment was performed on the mixed coating with an ultrasonic power of 500w for 10 minutes; (4) The ultrasonically treated coating was subjected to shear treatment at a shear speed of 5000rpm for 30 minutes to prepare the coating.
Embodiment 3
[0011] (1) First, set the temperature of the reaction tank to 110°C, take 35kg of ethylene-tetrafluoroethylene copolymer, 8kg of hydroxypropyl cellulose, 13kg of diethyl carbonate, and 14kg of polyurethane. Stir the ingredients, the speed of the stirrer is 170rpm, and the time is 20min; (2) Add 22kg of oleic acid, 5kg of heptadecanoic acid, and 7kg of ethyl acetoacetate, and stir with the stirrer for 20min after adding, with a speed of 120rpm ; (3) Ultrasonic treatment was performed on the mixed coating with an ultrasonic power of 400w for 10 minutes; (4) The ultrasonically treated coating was subjected to shear treatment at a shear speed of 5000rpm for 25 minutes to prepare the coating.
[0012] After the coatings of Example 1, Example 2, and Example 3 are respectively coated on the surface of conventional cement blocks, they are put into water at room temperature and soaked for 100 days, 110 days, and 120 days, and placed at a temperature of 50°C for 20 days, 25 days, 30 day...
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