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Inorganic anti-cracking aging-resistant coating and preparation method thereof

An anti-aging coating, inorganic technology, applied in the direction of anti-corrosion coatings, anti-fouling/underwater coatings, alkali metal silicate coatings, etc., can solve the problems of easy cracks in the film, pollute the environment, poor weather resistance, etc. Hard, easy to handle, and excellent stain resistance

Active Publication Date: 2015-05-06
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the continuous development of the paint industry, there are many products coated with acrylate, PVC polymer, etc., but some coatings are slightly corrosive, dust-absorbing, poor weather resistance, and pollute the environment
[0005] Existing inorganic coatings can not take into account the coating function of various coatings well, and there are still disadvantages such as poor viscosity and easy cracks in film formation. Aged Inorganic Coatings

Method used

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  • Inorganic anti-cracking aging-resistant coating and preparation method thereof
  • Inorganic anti-cracking aging-resistant coating and preparation method thereof
  • Inorganic anti-cracking aging-resistant coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] Embodiment 1: An inorganic anti-cracking and anti-aging coating, which is composed of the following raw materials in parts by weight: silica sol: 14; potassium silicate: 8; calcium sulfate whiskers: 14; titanium dioxide: 15; kaolin: 6; Ethylene-propylene emulsion: 4; propylene glycol: 1; 20% calcium hydroxide solution: 0.2; dispersant: 2; alcohol ester twelve: 0.5; Tego-810: 0.2; thickener MS-2: 0.5; water: 12 .

[0032] Calcium sulfate whiskers are prepared by the following method: Calcium sulfate dihydrate obtained after refining natural gypsum is prepared into a suspension, put into a high-pressure reactor, and under the condition of saturated vapor pressure and temperature of 110°C, calcium sulfate dihydrate transforms into It is needle-shaped calcium sulfate hemihydrate crystals, and then dried at a high temperature of 130° C. to obtain the anhydrous calcium sulfate whiskers of the present invention.

[0033] The preparation method of above-mentioned inorganic ant...

Embodiment 2

[0038] Embodiment 2: An inorganic anti-cracking and anti-aging coating, which is composed of the following raw materials in parts by weight: silica sol: 20; potassium silicate: 16; calcium sulfate whiskers: 22; titanium dioxide: 19; lithopone: 6; aluminum oxide: 4; ethylene-propylene emulsion: 10; propylene glycol: 2; 20% calcium hydroxide solution: 0.5; dispersant: 5; alcohol ester twelve: 1; Tego-810: 0.5; thickener MS- 2:1; water: 18.

[0039] Calcium sulfate whiskers are prepared by the following method: Calcium sulfate dihydrate obtained after refining natural gypsum is formulated into a suspension, put into a high-pressure reactor, and under the condition of saturated vapor pressure and temperature of 130°C, calcium sulfate dihydrate transforms into It is needle-shaped calcium sulfate hemihydrate crystals, and then dried at a high temperature of 130° C. to obtain the anhydrous calcium sulfate whiskers of the present invention.

[0040] The preparation method of above-me...

Embodiment 3

[0045] Embodiment 3: An inorganic anti-cracking and anti-aging coating, which is composed of the following raw materials in parts by weight: silica sol: 16; potassium silicate: 10; calcium sulfate whiskers: 16; titanium dioxide: 18; kaolin: 3; Lithopone: 1; Aluminum oxide: 3; Ethylene-propylene emulsion: 5; Propylene glycol: 1.4; 20% calcium hydroxide solution: 0.3; Dispersant: 3; Alcohol ester twelve: 0.6; Tego-810: 0.3; Thickener MS-2: 0.7; Water: 14; Fungicide: 0.3; Antifungal agent: 0.8.

[0046] Calcium sulfate whiskers are prepared by the following method: Calcium sulfate dihydrate obtained after refining natural gypsum is prepared into a suspension, put into a high-pressure reactor, and under the condition of saturated vapor pressure and temperature of 115°C, calcium sulfate dihydrate transforms It is needle-shaped calcium sulfate hemihydrate crystals, and then dried at a high temperature of 130° C. to obtain the anhydrous calcium sulfate whiskers of the present inventi...

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Abstract

The invention discloses an inorganic anti-cracking aging-resistant coating and a preparation method thereof. The coating is prepared from silica sol, potassium silicate, calcium sulfate whiskers, pigments, filler, propylene glycol, a polyvinyl acetate acrylate emulsion, a pH adjustor, a dispersant, a coalescing agent, a defoamer, a thickener and water. The preparation method comprises the following steps: weighing and dividing the defoamer into parts A and B which are equal; adding water into a container, adding the A part of the defoamer, propylene glycol and pH adjustor under a low rotating speed, and uniformly dispersing; increasing the rotating speed, adding the pigments, filler, calcium sulfate whiskers and potassium silicate and dispersing till the grain fineness is less than 50 microns; and after decreasing the rotating speed, adding the B part of the defoamer, a coalescing agent, silica sol, polyvinyl acetate acrylate emulsion and a thickener and uniformly dispersing. The coating disclosed by the invention is strong in adhesion property, good in construction, aging-resistant, anti-cracking, long in service life, non-toxic and environmental-friendly. The preparation method is simple to operate, convenient in production, low in requirement on equipment and suitable for industrial production on a large scale.

Description

technical field [0001] The invention belongs to the technical field of architectural coatings, and in particular relates to an inorganic anti-cracking and anti-aging coating and a preparation method thereof. Background technique [0002] With the development of society, environmental pollution is becoming more and more serious. After the promulgation of the International Environmental Protection Law, the paint industry, which is the main source of pollution, is developing in the direction of low pollution and environmental protection. All countries in the world have set limits on the content of volatile organic compounds (VOC) in paints. The United States has limited from 100g / L in 2001 to 50g / L in 2008. 2 Emissions are 40% to 45% lower than in 2005, and environmental protection has become the development direction of coatings. [0003] Objects are exposed to the atmosphere and are eroded by oxygen, moisture, etc., resulting in damages such as metal corrosion, wood decay, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D1/04C09D5/14C09D5/08C09D7/12
Inventor 赵德明汪勇
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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