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Silicone exterior wall paint and preparation method thereof

A technology of exterior wall paint and silicone, applied in the direction of coating, latex paint, etc., can solve the problems of dust and suspended particle pollution, high porosity of the coating layer, poor air quality, etc., to reduce porosity and improve stain resistance The effect of soiling and increasing compactness

Inactive Publication Date: 2008-08-27
广东龙湖科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to improve its air permeability, the silicone resin latex paint of Wacker Company in Germany adopts the method of increasing the amount of pigments and fillers. However, if the amount of pigments and fillers is large, the porosity of the coating layer will be more, which will inevitably result in poor stain resistance ( Pollution resistance > 15%), especially when used in buildings in our country, this shortcoming is particularly prominent, because the air quality in our country is generally poor, especially the pollution of dust and suspended particles is serious

Method used

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  • Silicone exterior wall paint and preparation method thereof

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Effect test

Embodiment 1

[0024] 1. Silicone resin exterior wall coating formula:

[0025] Raw material name dosage KG

[0026] water 220

[0027] Dispersant / Wetting Agent 7

[0028] thickener 11

[0029] Potassium methyl silicate aqueous solution 1

[0030] Antifoam 2

[0031] Coalescent 6

[0032] Co-solvent 7

[0033] Rutile titanium dioxide 210

[0034] Heavy calcium 140

[0035] Flake mica powder 40

[0036] Pure silicone resin emulsion (German Wacker SILRES BS43N) 130

[0037] Silicone modified polysiloxane emulsion 40

[0038] Preservatives 6

[0039] Acrylic Polymer Emulsion 180

[0040] Total 1000

[0041] 2. Preparation method

[0042]Weigh various raw materials according to the above formula and dosage, adjust the speed of the dispersion tank agitator to 800-900 rpm, mix water, dispersant, wetting agent, thickening agent, potassium methyl silicate aqueous solution, defoamer, Add film-forming aids and co-solvents into the dispersion tank together, gradually increase the stirrin...

Embodiment 2

[0044] 1. Silicone resin exterior wall coating formula

[0045] Raw material name dosage KG

[0046] water 210

[0047] Dispersant / Wetting Agent 7

[0048] thickener 11

[0049] Potassium methyl silicate aqueous solution (1:3 water) 1

[0050] Antifoam 2

[0051] Coalescent 6

[0052] Co-solvent 7

[0053] Rutile titanium dioxide 210

[0054] Heavy calcium 140

[0055] Flaky mica powder 50

[0056] Pure silicone resin emulsion (SILRES BS43N from Wacker, Germany) 110

[0057] Paste isooctyltriethoxysilane mixture 40

[0058] Silicone modified polysiloxane emulsion 20

[0059] Preservatives 6

[0060] Acrylic Polymer Emulsion 180

[0061] Total 1000

[0062] 2. Preparation method

[0063] Weigh various raw materials according to the above formula and dosage, adjust the speed of the dispersion tank agitator to 800-900 rpm, mix water, dispersant, wetting agent, thickening agent, potassium methyl silicate aqueous solution, defoamer, Add film-forming aids and co-solv...

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Abstract

The invention provides an organic-silicon resin exterior wall paint which is suitable for exterior wall decoration of national architectures, wherein the paint comprises pigment and filler which occupies 35-45% of the weight of paint, film forming matter 25-35%, addition agent 8-12% and water 20-25%, wherein film forming matter is formed by organic-silicon resin emulsion and acrylic polymer emulsion, and the percentages by weight are that organic-silicon resin emulsion 40-50 and acrylic polymer emulsion 55-60, and potassium methyl silicate water solution which occupies 0.08-0.12% of the weight of the paint is added in the paint. The organic-silicon resin exterior wall paint of the invention is suitable for national climatic characteristics and environmental factors, which has excellent pollution resistance on the basis of keeping weatherability, air permeability and low water absorption ratio, and is particularly suitable for the decoration and protection of exterior wall of national architecture. The invention also discloses a process for preparing the above paint, and the process can lead organic-silicon resin emulsion to be evenly dispersed in pigment and filler, which better improves water resistance of film coating.

Description

technical field [0001] The invention relates to a coating, in particular to an exterior wall coating used for decoration and protection of the exterior walls of buildings, and more particularly to an exterior wall coating containing organosilicon resin. The present invention also relates to a preparation method of the above-mentioned exterior wall paint. Background technique [0002] Concrete structures are vulnerable to external environmental erosion due to their porous surface structure and their ability to absorb water. With the development of the construction industry, the use of coatings to decorate and protect the exterior walls of buildings has become more and more recognized by people. The most commonly used architectural coatings in my country can be divided into two series: oil-based coatings and water-based coatings. Because oil-based coatings contain harmful components such as organic solvent volatiles and heavy metals, they have been gradually eliminated, while...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D5/02C09D7/12C09D133/02
Inventor 洪永顺
Owner 广东龙湖科技股份有限公司
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