Emulsion paint for external wall and preparation method of emulsion paint

A latex paint and pre-emulsion technology, applied in the field of latex paint for exterior walls and its preparation, can solve the problems of poor water permeability, anti-salt and alkali resistance, poor film-forming performance, and alkaline bleed, etc., and achieve easy operation , improve the quality, the effect of high cohesion

Active Publication Date: 2021-06-29
天津德普威涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of painting during coating needs to wait for the surface of the primer to dry completely, and the time to wait for the surface of the primer to completely dry generally takes about 2 hours, ...

Method used

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  • Emulsion paint for external wall and preparation method of emulsion paint
  • Emulsion paint for external wall and preparation method of emulsion paint
  • Emulsion paint for external wall and preparation method of emulsion paint

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0064] Coupling agent modified titanium dioxide is prepared by the following method:

[0065] At a temperature of 65°C, mix and stir 200kg of titanium dioxide and water for 10 minutes to obtain a titanium dioxide slurry with a mass fraction of 40%, then add 300kg of titanate coupling agent and mix evenly, react for 1 hour, filter, and temperature, and dried for 50 minutes to obtain coupling agent-modified titanium dioxide.

preparation example 2

[0067] Coupling agent modified titanium dioxide is prepared by the following method:

[0068] At a temperature of 67.5°C, mix and stir 200kg of titanium dioxide and water for 12.5 minutes to obtain a titanium dioxide slurry with a mass fraction of 42.5%, then add 350kg of silane coupling agent and mix evenly, react for 1.25h, filter, and temperature, and dried for 55 minutes to obtain coupling agent-modified titanium dioxide.

preparation example 3

[0070] Coupling agent modified titanium dioxide is prepared by the following method:

[0071] At a temperature of 70°C, mix and stir 200kg of titanium dioxide and water for 15 minutes to obtain a titanium dioxide slurry with a mass fraction of 45%, then add 400kg of silane coupling agent and mix evenly, react for 1.5h, filter, and filter at a temperature of 90°C , dried for 60 minutes to obtain coupling agent modified titanium dioxide.

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PUM

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Abstract

The invention relates to the field of building materials, and particularly discloses emulsion paint for an outer wall and a preparation method of the emulsion paint. The emulsion paint is prepared from the following raw material components in parts by weight: 380 to 420 parts of styrene-acrylic emulsion, 140 to 160 parts of coupling agent modified titanium dioxide, 114 to 126 parts of SiO2 powder, 5 to 10 parts of diammonium hydrogen citrate, 18 to 22 parts of coalescing agent, 155 to 165 parts of water, 4 to 8 parts of dispersing agent, 2 to 4 parts of defoaming agent, 0.5 to 1.5 parts of wetting agent, 10 to 20 parts of anti-freezing agent, 2 to 2.8 parts of hydroxyethyl cellulose, 0.8 to 1.2 parts of multifunctional additive, 45 to 55 parts of kaolin, 100 to 120 parts of heavy calcium powder, 73-77 parts of snowflake white powder, and 1.8-2.2 parts of a bactericide. The emulsion paint disclosed by the invention has excellent film-forming property, so that the emulsion paint has good water resistance, alkali resistance, water permeability and salt and alkali flooding resistance.

Description

technical field [0001] The application relates to the field of building materials, more specifically, it relates to a latex paint for exterior walls and a preparation method thereof. Background technique [0002] Latex paint is a kind of water-based paint, which is based on synthetic resin emulsion and added with pigments, fillers and various additives. It is also called synthetic resin emulsion paint. According to the different application environment of the product, it can be divided into interior wall latex paint and exterior wall latex paint. The exterior wall latex paint is mainly applied on the surface of the exterior wall to make the appearance of the building neat and beautiful, achieve the purpose of beautifying the urban environment, and at the same time protect the exterior wall of the building and prolong the service life of the exterior wall of the building. [0003] Exterior wall latex paint generally includes three categories including primer, intermediate pa...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D7/62C09D7/61C09D5/02
CPCC09D125/14C09D5/024C08K2003/2241C08K2003/265C08K13/06C08K9/04C08K3/22C08K9/06C08K3/36C08K3/346C08K3/26
Inventor 李志军施展
Owner 天津德普威涂料有限公司
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