Preparation method for thick-layer anti-cracking floor paint

An anti-crack and floor paint technology, applied in coatings, polyester coatings, etc., can solve problems such as poor tensile properties and easy cracks, and achieve the effects of improving tensile properties, reducing porosity, and broad application prospects

Inactive Publication Date: 2018-06-22
朱文杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a preparation method of a thick-coated anti-crack floor paint for the defect that the floor paint is prone to cracks due to poor tensile properties after drying when the floor paint is thickly coated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025]Put 400g of fly ash in a beaker filled with 500mL of 40% sodium hydroxide solution, heat up to 65°C, stir for 20min, and keep warm for 2h to obtain an alkalized suspension, pour the alkalized suspension into In the Buchner funnel, filter under reduced pressure to remove the residue to obtain the filtrate; put the filtrate in a beaker with a magnetic stirrer, heat the beaker to 80°C with an electric heating constant temperature water bath, add 200g quicklime to the beaker, and start The stirrer is stirred at a speed of 250r / min, and the reaction product is obtained after heat preservation for 30 minutes. The reaction product is placed in a high-speed centrifuge and centrifuged at a speed of 3000r / min. The upper layer is removed to obtain the lower sediment, and the precipitate is placed in an oven. , heat up to 90°C, dry for 10 hours, take out the dried precipitate and place it in a pulverizer to pulverize to obtain calcium silicate particles with a particle size of 0.1mm;...

example 2

[0027] Put 450g of fly ash in a beaker filled with 525mL of 40% sodium hydroxide solution, heat up to 67°C, stir for 22min, and keep warm for 2.5h to obtain an alkalized suspension. Pour the alkalized suspension into Put it into a Buchner funnel, filter under reduced pressure, remove the residue to obtain the filtrate; place the filtrate in a beaker with a magnetic stirrer, heat the beaker to 85°C with an electric heating constant temperature water bath, add 210g quicklime to the beaker, Start the agitator to stir at a speed of 270r / min, keep warm for 40min to obtain the reaction product, put the reaction product in a high-speed centrifuge, and centrifuge at a speed of 3100r / min, remove the upper layer to obtain the lower sediment, and place the sediment in an oven , heat up to 95°C, dry for 11 hours, take out the dried precipitate and place it in a pulverizer to pulverize to obtain calcium silicate particles with a particle size of 0.2mm; weigh 230g of calcium silicate particl...

example 3

[0029] Put 500g of fly ash in a beaker filled with 550mL of 40% sodium hydroxide solution, heat up to 70°C, stir for 25min, and keep warm for 3h to obtain an alkalized suspension, pour the alkalized suspension into In the Buchner funnel, filter under reduced pressure to remove the residue to obtain the filtrate; put the filtrate in a beaker with a magnetic stirrer, heat the beaker to 90°C with an electric constant temperature water bath, add 220g quicklime to the beaker, and start The stirrer is stirred at a speed of 300r / min, and the heat preservation reaction is carried out for 45 minutes to obtain the reaction product. The reaction product is placed in a high-speed centrifuge, centrifuged at a speed of 3300r / min, the upper layer is removed to obtain the lower layer of sediment, and the precipitate is placed in an oven. , heated to 100°C, dried for 12 hours, took out the dried precipitate and put it in a pulverizer to pulverize to obtain calcium silicate particles with a part...

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PUM

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Abstract

The invention discloses a preparation method for a thick-layer anti-cracking floor paint, and belongs to the technical field of preparation of coatings. According to the method provided by the invention, a high-concentration sodium silicate solution is obtained through soaking of fly ash in a strong alkali; after quicklime is added, calcium silicate is obtained; after the calcium silicate is crushed into calcium silicate powder, the calcium silicate powder is modified by using a silane coupling agent to obtain modified calcium silicate powder; the modified calcium silicate powder is used as afiller to be added into a varnish; and dispersion is performed to obtain the floor paint. Interfacial adhesion force is improved by the modified calcium silicate powder in the floor paint; each molecule of the silane coupling agent is divided into two ends; polar ends and hydroxyl groups adhered to the surface of the calcium silicate can be subjected to a chemical reaction or the polar ends are adsorbed on the surface; non-polar ends and matrix resin are subjected to a reaction or physical winding; and when a multi-layer coating is applied, internal stress is generated between a dry layer anda wet layer due to difference of surface tension, and the modified calcium silicate powder can reduce the influence of the internal stress on stability of a system through crosslinking and chain entanglement, thereby achieving the anti-cracking purpose.

Description

technical field [0001] The invention discloses a preparation method of a thick coating anti-crack floor paint, which belongs to the technical field of paint preparation. Background technique [0002] Floor paint is used as a floor coating for building interior floor coating finishes. The use of floor paint finishes is low in cost, light in weight, easy to maintain and update, and has good integrity. [0003] Generally divided into the following categories: Ordinary floor paint: Polyurethane floor paint has been widely used at present. The paint film is bright and plump, wear-resistant, water-resistant, oil-resistant, and alkali-resistant. There are also UV-curable coatings suitable for assembly line production. Cement floor paint: It is used to finish the cement floor and improve the use function of the cement floor. Inexpensive options include perchlorethylene or styrene tar cement floor paint and polyvinyl butyral cement floor paint. Seamless floor paint: It is formulat...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D7/62
Inventor 龙春牙何俊欣陈莉莉
Owner 朱文杰
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