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Weather-resistant paint for external walls and preparation method

A technology for exterior wall paint and weather resistance, applied in the field of wall paint, can solve the problems of discoloration, chalking, poor weather resistance of exterior wall paint, affecting decorative effect and use value, etc., and achieves improvement of temperature resistance and weather resistance of coatings Effect

Inactive Publication Date: 2016-01-27
CHONGQING FENGYUE BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing exterior wall paints have poor weather resistance, and the paint film is prone to aging, discoloration, powdering, etc., which seriously affects the decorative effect and use value

Method used

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  • Weather-resistant paint for external walls and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A weather-resistant exterior wall paint, which consists of the following components: 5kg of hydroxypropyl methylcellulose, 15kg of wollastonite powder with a mass fraction of silicon dioxide not less than 58%, 25kg of calcined kaolin, 12kg of styrene-acrylic emulsion, 5kg of disperse Agent polyvinyl alcohol 400, 1kg anti-settling agent, 2kg anti-mold agent, 1.5kg water-based acid alcohol resin defoamer and 35kg water.

[0033] The preparation method of this weather-resistant exterior wall paint is:

[0034] A. Weigh according to the ratio of raw materials and reserve;

[0035] B. Add water to the mixer, then add calcined kaolin, wollastonite powder and dispersant in sequence, and stir at 680 rpm for 15 minutes at 40°C;

[0036] C. Add styrene-acrylic emulsion, cellulose, anti-foaming agent, anti-fungal agent and anti-sedimentation agent to the mixture obtained in step B, and stir at 780 rpm for 10 minutes at 25°C.

Embodiment 2

[0038] A weather-resistant exterior wall paint, consisting of the following components: 10kg of hydroxypropyl methylcellulose, 6kg of wollastonite powder with a mass fraction of silicon dioxide not less than 58%, 15kg of calcined kaolin, 18kg of styrene-acrylic emulsion, 3kg of disperse Agent polyethylene glycol 200, 3kg anti-settling agent, 5kg anti-mold agent, 0.5kg water-based acid alcohol resin defoamer and 25kg water.

[0039] The preparation method of this weather-resistant exterior wall paint is:

[0040] A. Weigh according to the ratio of raw materials and reserve;

[0041] B. Add water to the mixer, then add calcined kaolin, wollastonite powder and dispersant in sequence, and stir at 730 rpm for 20 minutes at 35°C;

[0042] C. Add styrene-acrylic emulsion, cellulose, antifoaming agent, antifungal agent and anti-sedimentation agent to the mixture obtained in step B, and stir at 7500 rpm for 15 minutes at 30°C.

Embodiment 3

[0044] A weather-resistant exterior wall paint, which consists of the following components: 8kg of hydroxypropyl methylcellulose, 9kg of wollastonite powder with a mass fraction of silicon dioxide not less than 58%, 18kg of calcined kaolin, 15kg of styrene-acrylic emulsion, 4kg of disperse Agent polyethylene glycol 200, 2kg anti-settling agent, 3kg anti-mold agent, 1kg water-based acid alcohol resin defoamer and 30kg water.

[0045] The preparation method of this weather-resistant exterior wall paint is:

[0046] A. Weigh according to the ratio of raw materials and reserve;

[0047] B. Add water to the mixer, then add calcined kaolin, wollastonite powder and dispersant in sequence, and stir at 720 rpm for 18 minutes at 36°C;

[0048] C. Add styrene-acrylic emulsion, cellulose, antifoaming agent, antifungal agent and anti-sedimentation agent to the mixture obtained in step B, and stir at 760 rpm for 12 minutes at 28°C.

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Abstract

The invention relates to weather-resistant paint for external walls and a preparation method. The weather-resistant paint for the external walls comprises components in parts by weight as follows: 5-10 parts of cellulose, 6-15 parts of wollastonite powder, 15-25 parts of calcined kaolin, 12-18 parts of a styrene-acrylic emulsion, 3-5 parts of a dispersing agent, 1-3 parts of an anti-settling agent, 2-5 parts of a mildew preventive agent, 0.5-1.5 parts of a defoaming agent and 25-35 parts of water. The weather resistance of the weather-resistant paint for the external walls is remarkably improved. In comparison with the prior art, the water resistance, the alkali resistance, the artificial weather aging resistance, the chalking resistance, the discoloration resistance and the stain resistance of the paint and the temperature fluctuation resistance of coating are remarkably improved.

Description

technical field [0001] The invention relates to a wall paint, in particular to a weather-resistant exterior wall paint. Background technique [0002] Exterior wall paint, also called exterior wall paint, is generally used for exterior walls, and can also be used in high-humidity places such as toilets. There are many types of exterior wall coatings, which can be divided into strong acid and alkali resistant exterior wall coatings, pure acrylic elastic exterior wall coatings, silicone self-cleaning elastic exterior wall coatings, advanced acrylic exterior wall coatings, fluorocarbon coatings, pastoral scenery low-carbon series, etc. . [0003] Existing exterior wall paints have poor weather resistance, and the paint film is prone to aging, discoloration, pulverization, etc., which seriously affects the decorative effect and use value. Contents of the invention [0004] In view of this, the object of the present invention is to provide a weather-resistant exterior wall pai...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D101/02C09D7/12C09D5/16
Inventor 杭跃
Owner CHONGQING FENGYUE BUILDING MATERIAL
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