Acid-modified potassium silicate-fluorocarbon modified styrene-acrylic emulsion composite coating and preparation method thereof

A technology of potassium silicate and styrene-acrylic emulsion, which is applied in the direction of alkali metal silicate coatings, anti-corrosion coatings, coatings, etc., can solve the problems of reduced water resistance of colloids, unsatisfactory corrosion resistance, etc., to reduce moisture absorption, The effect of improving the overall performance and increasing the water resistance

Active Publication Date: 2018-10-23
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the introduction of sodium ions in the matrix, the water resistance of the colloid is reduced, and the conventional styrene-acrylic emulsion is used, and its corrosion resistance cannot meet the harsher acid-base corrosion conditions.

Method used

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  • Acid-modified potassium silicate-fluorocarbon modified styrene-acrylic emulsion composite coating and preparation method thereof
  • Acid-modified potassium silicate-fluorocarbon modified styrene-acrylic emulsion composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 (for the exterior wall of the acid volatilization workshop)

[0039] Preparation of acid-modified potassium silicate: Weigh 76% of the modulus ratio as SiO 2 / K 2 O=4, concentration is 30% potassium water glass, put potassium water glass into the dispersing and stirring equipment, under 1300rpm high-speed stirring, slowly add 0.6% stabilizer tin mercaptide and pure water, stir evenly, Then add 1% hydrochloric acid to adjust the pH value of the potassium water glass to 11 to obtain acid-modified potassium water glass. Weigh 22 parts of acid-modified potassium water glass for use.

[0040] Preparation of fluorocarbon modified styrene-acrylic emulsion: Add 60% BC-01 styrene-acrylic emulsion into a four-necked bottle, stir at 300rpm, raise the temperature to 75°C, slowly add 8% fluorocarbon emulsion dropwise, and slowly Slowly add 0.9% aminoethylaminopropyl polydimethylsiloxane, then add 0.8% octylphenol polyoxyethylene ether, 0.01% polyether modified polys...

Embodiment 2

[0043] Embodiment 2 (for the exterior wall of the acid volatilization workshop)

[0044] Preparation of acid-modified potassium silicate: Weigh 78% of the modulus ratio as SiO 2 / K 2 O=4, concentration is 30% potassium water glass, potassium water glass is put into dispersion mixing equipment, under 1300rpm high-speed stirring, slowly add 0.7% stabilizer tin mercaptide and pure water, stir evenly, Then add 1.1% hydrochloric acid to adjust the pH of the potassium water glass to 11 to obtain acid-modified potassium water glass. Weigh 20 parts of acid-modified potassium water glass for use.

[0045] Preparation of fluorocarbon modified styrene-acrylic emulsion: Add 60% BC-01 styrene-acrylic emulsion into a four-necked bottle, stir at 400rpm, raise the temperature to 74°C, slowly add 7.5% fluorocarbon emulsion dropwise, and slowly Slowly add 0.8% aminoethylaminopropyl polydimethylsiloxane, then add 0.8% octylphenol polyoxyethylene ether, 0.01% polyether modified polysiloxane ...

Embodiment 3

[0048] Embodiment 3 (for the interior wall of the acid volatilization workshop)

[0049] Preparation of acid-modified potassium silicate: Weigh 80% of the modulus ratio as SiO 2 / K 2 O=4, concentration is 30% potassium water glass, put potassium water glass into the dispersing and stirring equipment, under 1500rpm high-speed stirring, slowly add 0.9% stabilizer tin mercaptide and pure water, stir evenly, Then add 1.2% hydrochloric acid to adjust the pH value of the potassium water glass to 11 to obtain acid-modified potassium water glass. Weigh 25 parts of acid-modified potassium water glass for use.

[0050] Preparation of fluorocarbon modified styrene-acrylic emulsion: Add 70% BC-01 styrene-acrylic emulsion into a four-necked bottle, stir at 400rpm, raise the temperature to 76°C, slowly add 9% fluorocarbon emulsion dropwise, and slowly Slowly add 1% aminoethylaminopropyl polydimethylsiloxane, then add 1% octylphenol polyoxyethylene ether, 0.02% polyether modified polysi...

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Abstract

The invention discloses an acid-modified potash water glass-fluorocarbon-modified styrene-acrylic emulsion composite coating and a preparation method thereof. The composite coating comprises a matrix component, an assistant component and filler. The matrix component is prepared from, by weight, 20-30 parts of acid-modified potash water glass and 5-12 parts of fluorocarbon-modified styrene-acrylic emulsion. The acid-modified potash water glass is adopted, the moisture absorption of a matrix is effectively reduced, and the water resistance of the coating is improved; meanwhile, the fluorocarbon-modified styrene-acrylic emulsion has the advantages of being high in chemical corrosion resistance and artificial aging resistance and the like, and the overall use performance of the coating is greatly improved.

Description

technical field [0001] The invention relates to the technical field of coating protection, in particular to an acid-modified potassium silicate-fluorocarbon modified styrene-acrylic emulsion composite coating and a preparation method thereof. Background technique [0002] Organic-inorganic composite architectural coatings take the strengths of inorganic coatings and organic coatings, and have both advantages, so they are considered to be a class of protective coatings with great development prospects. The main variety of this type of coating is a coating made by compounding silica sol as an inorganic component with other organic components, such as styrene-acrylic emulsion and polyvinyl acetate emulsion. However, the low solid content and high price of silica sol limit the application of such coatings. Patent application CNIO2618129A discloses a water glass-styrene-acrylic emulsion composite interior and exterior wall coating and its preparation method. Sodium water glass i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D125/14C09D127/12C09D5/08C09D7/65C09D7/61C09D7/63
CPCC08L2205/02C08L2205/035C09D1/04C09D5/08C09D7/61C09D7/63C09D7/65C09D7/70C09D125/14C08L27/12C08L83/08C08L71/02C08L83/12
Inventor 赵宇航池君洲高莹王连蒙王永旺杨磊孙国才苗家兵
Owner CHINA SHENHUA ENERGY CO LTD
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