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Waterproof and heat-resistant exterior wall coating and preparation method thereof

An exterior wall coating and heat-resistant technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of exterior wall coatings such as poor waterproof and heat-resistant effects, and achieve excellent waterproof and heat-resistant effects

Inactive Publication Date: 2014-03-12
上海世范乐建新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: ordinary exterior wall coatings have poor waterproof and heat-resistant effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses a waterproof and heat-resistant exterior wall coating and a preparation method thereof. The exterior wall coating comprises the following components in parts by weight: 35-38 parts of ethylene-tetrafluoroethylene copolymer, 8-12 parts of hydroxypropyl cellulose, 21-23 parts of oleic acid, 5-7 parts of heptadecanoic acid, 6-8 parts of ethyl acetoacetate, 12-14 parts of diethyl carbonate and 14-17 parts of polyurethane. All the components of the coating can enable the prepared exterior wall coating to have good waterproof and heat-resistant functions by stirring, ultrasonic treatment, shearing and other means.

Description

technical field [0001] The invention relates to an exterior wall paint and a preparation method thereof, in particular to a waterproof and heat-resistant exterior wall paint and a preparation method thereof. Background technique [0002] Coatings are widely used and are used on exterior walls and floors of buildings. At present, when coatings are applied to the exterior walls of buildings, there are some problems. For example, the waterproof performance of the coatings is not good. There will be shedding and cracking, which seriously affect the appearance and waterproof function of the building. When the temperature is too high in summer, after a long period of exposure to the sun, the paint will also crack. All of these pose challenges to the application of coatings. Contents of the invention [0003] Technical problem to be solved: ordinary exterior wall coatings have poor waterproof and heat resistance effects. [0004] Technical solution: The invention discloses a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/06C09D175/04C09D101/26C09D7/12C09D5/00
Inventor 石小强
Owner 上海世范乐建新材料有限公司
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