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Water-based steel structure flame-retardant coating and preparation method thereof

A technology for flame retardant coatings and steel structures, applied in antifouling/underwater coatings, fire retardant coatings, epoxy resin coatings, etc. Layer strength and water resistance and bacteriostatic properties, the effect of improving carbon layer strength and flame retardant properties, and improving water resistance and fire resistance

Inactive Publication Date: 2021-05-28
三棵树(上海)新材料研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the water-based thin-coated intumescent flame-retardant coatings for steel structures on the market have defects such as poor water resistance, low strength of the intumescent carbon layer, and poor fire resistance.
Moreover, such coatings on the market generally do not have antibacterial properties. If the steel structure building is used for a long time, the degree of cleaning is not thorough and the environment is affected, a large number of pathogenic bacteria will grow on the surface, which will affect the health of users.

Method used

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  • Water-based steel structure flame-retardant coating and preparation method thereof
  • Water-based steel structure flame-retardant coating and preparation method thereof
  • Water-based steel structure flame-retardant coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of preparation method of waterborne steel structure flame retardant coating, comprises the steps:

[0034] With stirring at 500r / min, add water, dispersant, half of the defoamer, inorganic thickener, titanium dioxide, talc, char-forming agent, foaming agent and dehydrating agent into the dispersion tank, and then increase the speed To 2000r / min, then stir for 15min to make fireproof coating slurry;

[0035] Then add the fire retardant coating slurry into glass beads equal in weight to the fire retardant coating slurry and stir for 1 hour, then filter the glass beads, the stirring rate is 1500r / min, and the diameter of the glass beads is 1mm;

[0036] Then at a stirring rate of 2000r / min, add the other half of the emulsion, the defoamer, wetting agent, preservative, bacteriostat, film-forming aid, pH regulator (MA-95) and sodium silicate, and stir 10-30min, that is.

Embodiment 2

[0038] A kind of preparation method of waterborne steel structure flame retardant coating, comprises the steps:

[0039] Add water, dispersant, defoamer, half of the defoamer, inorganic thickener, titanium dioxide, talc, char-forming agent, foaming agent and dehydrating agent into the dispersing tank under stirring at 800r / min. Then the rotating speed is increased to 3000r / min, then stirred for 20min to make fireproof coating slurry;

[0040] Then add the fireproof coating slurry to the glass beads equal to the weight of the fireproof coating slurry and stir for 2h, then filter the glass beads, the stirring rate is 1500-2000r / min, and the diameter of the glass beads is 3mm;

[0041] Then at a stirring rate of 2500r / min, add the other half of the emulsion, the defoamer, wetting agent, preservative, bacteriostat, film-forming aid, pH regulator (ammonia) and potassium silicate, and stir for 30min. Instantly.

Embodiment 3

[0043] A kind of preparation method of waterborne steel structure flame retardant coating, comprises the steps:

[0044] Under stirring at a speed of 600r / min, add water, dispersant, half of the defoamer, inorganic thickener, titanium dioxide, talcum powder, char-forming agent, foaming agent and dehydrating agent into the dispersion tank, and then increase the speed To 2500r / min, then stir for 18min to make fireproof coating slurry;

[0045] Then add the fireproof coating slurry to the glass beads equal to the weight of the fireproof coating slurry and stir for 1.5h, then filter the glass beads, the stirring speed is 1600r / min, and the diameter of the glass beads is 2mm ;

[0046] Then at a stirring rate of 2200r / min, add the other half of the emulsion, the defoamer, wetting agent, preservative, bacteriostat, film-forming aid, pH regulator (AMP-95) and sodium silicate, and stir 20min, that is.

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Abstract

The invention relates to a water-based steel structure flame-retardant coating which is mainly prepared from the following components in parts by mass: 25-35 parts of emulsion, 9-26 parts of pigment filler, 8-15 parts of a charring agent, 8-15 parts of a foaming agent, 10-20 parts of a dehydrating agent, 0.1-0.5 part of a defoaming agent, 0.1-0.5 part of a wetting agent, 1-5 parts of a dispersing agent, 0.1-0.5 part of a preservative, 0.1-0.5 part of a bacteriostatic agent, 1-5 parts of a coalescing agent, 0.1-0.5 part of an inorganic thickening agent, 0.1-1 part of a pH regulator and 5-20 parts of water. The coating can play a role in expansion and flame retardance at a high temperature, and has relatively high carbon layer strength and water resistance. The water-based steel structure flame-retardant coating disclosed by the invention can play a role in intumescent flame retardance at a high temperature, and has relatively high carbon layer strength, water resistance and antibacterial performance.

Description

technical field [0001] The invention relates to a water-based flame-retardant coating for steel structures and a preparation method thereof. Background technique [0002] At present, flame-retardant coatings for steel structures can be divided into intumescent and non-intumescent according to the mechanism, and can be divided into thick-coated and thin-coated according to the thickness of the coating. Most of the existing thin-coated fire retardant coatings are solvent-based. However, due to the increasingly stringent environmental protection requirements in the current market, water-based thin-coated intumescent flame-retardant coatings for steel structures have advantages such as superior performance, low cost, and easy construction. The attention of researchers, and the application in the market is becoming more and more extensive. [0003] Common water-based intumescent steel structure fire retardant coatings on the market are mainly composed of emulsion, pigments and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D163/00C09D127/06C09D5/18C09D5/14C09D7/43C09D7/61
CPCC08K2003/2241C08K2003/323C08L2201/02C09D5/14C09D5/185C09D127/06C09D133/04C09D163/00C09D7/43C09D7/61C08L5/08C08K3/34C08K3/22C08K5/053C08K3/32C08K5/34922C08K13/02C08K3/346C08K3/36
Inventor 关淇元朱恒秦玉猛付绍祥洪杰
Owner 三棵树(上海)新材料研究有限公司