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Production method of aqueous fluorocarbon-cement base building coating

A water-based fluorocarbon and cement technology, used in antifouling/underwater coatings, coatings, and biocide-containing paints. Cost, effect of improving weather resistance

Inactive Publication Date: 2016-05-04
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1970s, people successfully developed solvent-based fluorocarbon coatings, but due to their shortcomings such as strong odor, heavy pollution, and difficult construction, they could not be mass-produced and applied. Since the 1990s, people began to develop more environmentally friendly and healthy water-based fluorocarbon coatings.

Method used

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  • Production method of aqueous fluorocarbon-cement base building coating
  • Production method of aqueous fluorocarbon-cement base building coating
  • Production method of aqueous fluorocarbon-cement base building coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Production formula:

[0018]

[0019]

[0020] Weigh fillers, pigments, water, dispersants according to the above formula, add them into the batching tank, stir while adding materials, and control the stirring speed at 800-1400 rpm to make slurry A; in another batching tank After adding the water-based fluorocarbon emulsion according to the formula requirements, add white cement while stirring, and control the stirring speed at 300-500 rpm to obtain slurry B; add slurry B to the prepared slurry A while stirring, and finally According to the actual situation, add defoamer, anti-mold and fungicide, film-forming aid, etc., and stir evenly to prepare a water-based fluorocarbon-cement based architectural coating. After the prepared paint was left for 3 days, the prepared paint was applied to the cement sheet, and then the performance test was carried out after 7 days of natural air-drying.

[0021] Table 1 Embodiment 1 performance test

[0022]

Embodiment 2

[0024] Production formula:

[0025]

[0026]

[0027] The materials were weighed according to the above formula, and water-based fluorocarbon-cement based architectural coatings were prepared and tested according to the method of Example 1. The coating performance test results are shown in Table 2.

[0028] Table 2 embodiment 2 performance test

[0029]

Embodiment 3

[0031] Production formula:

[0032]

[0033]

[0034] The materials were weighed according to the above formula, and water-based fluorocarbon-cement based architectural coatings were prepared and tested according to the method of Example 1. The coating performance test results are shown in Table 3.

[0035] Table 3 Embodiment 3 performance test

[0036] Fluorocarbon coating film performance test items

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Abstract

The invention discloses a production method for preparing a low-cost and high-performance fluorocarbon-cement base building coating through adopting an aqueous fluorocarbonpolymer emulsion and white Portland cement (white cement) as main film forming substances and adding a pigment, a filler, an assistant and water. The formula is reasonable, and nanometer calcium silicate hydrate (C-S-H) gel generated by hydrating the white cement is especially used to modify a coating, so the hardness, the weatherability, the chemical erosion resistance and the adhesiveness with a cement base building material of the coating are obviously improved; and the white cement is used as a film forming substance to substitute fluorocarbon resin, so the production cost of the above product is obviously reduced, and the market competitiveness of the coating is improved.

Description

technical field [0001] The invention relates to a production method of water-based fluorocarbon-cement-based architectural coatings, in particular utilizing nanoscale calcium silicate hydrate (C-S-H) gel produced by hydration of white cement to modify the fluorocarbon coatings while reducing production costs, The invention belongs to the technical field of paint production. Background technique [0002] Among many organic coating film formers such as acrylic resin, polyurethane, silicone modified resin, silicone acrylic resin and fluorocarbon resin, fluorocarbon resin is the coating film former with the best performance found so far. The exterior wall coating made of fluorocarbon resin as film former has very good weather resistance, and its service life is more than 30 years. However, due to the high cost of fluororesin coatings, they are generally only used in occasions with special requirements. In order to further expand the scope of use of fluorocarbon coatings, endow...

Claims

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Application Information

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IPC IPC(8): C09D127/12C09D5/16C09D7/12
Inventor 刘志刚邢云青于守武张广明杨立荣刘刚白瑞英蔡源博王梦影封孝信
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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