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Ultrathin fireproof aqueous coating and preparation method thereof

A water-based coating, ultra-thin technology, applied in the direction of fire-proof coatings, alkali metal silicate coatings, coatings, etc., can solve the problems of lack of strength and durability of expanded carbon, short fire-resistant time of fire-resistant coatings, inconvenient construction, etc., to achieve The effect of delaying the heating process, preventing infrared heat radiation, and reducing thermal conductivity

Active Publication Date: 2017-10-17
天津朗华睿博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fire resistance of this fire retardant coating is relatively short due to the lack of strength and durability of the expanded char produced in the fire
[0008] In addition, in the actual application of fireproof coatings in the existing market, the thickness of the coating is generally 20mm. If the coating is too thick, it will lead to poor decoration and inconvenient construction.

Method used

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  • Ultrathin fireproof aqueous coating and preparation method thereof
  • Ultrathin fireproof aqueous coating and preparation method thereof
  • Ultrathin fireproof aqueous coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The preparation method of silicon airgel precursor is:

[0074] (1) Prepare a mixed solution of silicon source and solvent

[0075] Take a water glass with a molar number of 3.0 and put it into a reaction kettle, dilute it with 2.5 times the mass of deionized water, stir at 180 rpm for 30 minutes, and filter through a 200-mesh sieve to obtain a water glass solution.

[0076] (2) Sol

[0077] Get 8mol / L sulfuric acid, add zirconium sulfate salt (zirconium sulfate salt is counted as its zirconia, and the mol ratio with the silicon oxide of water glass solution is 5:100), yttrium sulfate salt (yttrium sulfate salt is counted as its yttrium oxide, and The molar ratio of aluminum oxide is 1:100); After mixing evenly, spray and add to the water glass solution that step (1) obtains, carry out rapid stirring with the speed of 1300 rev / min while spraying, when controlling pH value to 1.5 Stop spraying, and the spraying time is controlled at 100 minutes; Obtain sol.

[0078] (...

Embodiment 2

[0089] The preparation method of silicon airgel precursor is:

[0090] (1) Prepare a mixed solution of silicon source and solvent

[0091] Take a water glass with a molar number of 3.2 and put it into a reaction kettle, dilute it with deionized water of 3 times the mass, stir at 200 rpm for 30 minutes, and filter through a 200-mesh sieve to obtain a water glass solution.

[0092] (2) Sol

[0093] Get 10mol / L nitric acid, add aluminum hydrochloride (aluminum hydrochloride is calculated in alumina, and the mol ratio of aluminum oxide and silicon oxide in the water glass solution is 2:100), lanthanum hydrochloride (lanthanum hydrochloride is calculated in lanthanum oxide, and The molar ratio of aluminum oxide is 3:100); After mixing evenly, spray and add to the water glass solution that step (1) obtains, carry out rapid stirring with the speed of 1200 rpm while spraying, control the pH value till 2.5 , the spraying time is controlled at 100 minutes; the sol is obtained.

[009...

Embodiment 3

[0105] The preparation method of silicon airgel precursor is:

[0106] (1) Prepare a mixed solution of silicon source and solvent

[0107] Take water glass with a molar number of 4.0 and put it into a reaction kettle, dilute it with 3 times the mass of deionized water, stir at 80 rpm for 30 minutes, and filter through a 200-mesh sieve to obtain a water glass solution.

[0108] (2) Sol

[0109] Get 15mol / L nitric acid, add aluminum oxalate salt (in terms of aluminum oxide, the mol ratio with silicon oxide in the water glass solution is 3:100), lanthanum oxalate salt (in terms of lanthanum oxide, the mol ratio with aluminum oxide is 6: 100); after mixing evenly, spray and join the water glass solution that step (1) obtains, carry out rapid stirring with the speed of 1800 rev / mins while spraying, control pH value till 2.5, spray time is controlled at 100 minutes ; Get the sol.

[0110] (3) Gel

[0111] Add the sodium hydroxide solution with a pH value of 11.5 to the sol obtai...

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Abstract

The invention belongs to the field of aqueous coatings and in particular relates to an ultrathin fireproof aqueous coating and a preparation method thereof. When the ultrathin fireproof aqueous coating is prepared, a component A and a component B are added, the component A comprises an aerogel precursor, stepless powder and the like, and the component B is used as a binding agent. The aerogel precursor is adopted as a core raw material to prepare the fireproof aqueous coating; as an aerogel material is of a nano three-dimensional structure and has characteristics that a solid heat conduction route is effectively prolonged, gas convective heat transfer is inhibited and thermal radiation is reduced, an aerogel fireproof coating made of the aerogel material has a thermal insulation property which is incomparable by conventional materials; after being applied to a steel material and dried, the ultrathin fireproof aqueous coating provided by the invention is relatively high in mechanical strength, achieves a fireproof grade A1, additionally has relatively good advantages of being waterproof and low in cost, and provides a novel material for buildings, environmental protection and industrial energy conservation.

Description

technical field [0001] The invention belongs to the field of water-based paint, and in particular relates to an ultra-thin fireproof water-based paint and a preparation method thereof. Background technique [0002] Steel does not have flammability, but the thermal conductivity of steel is large, and the thermal conductivity at room temperature reaches 58.2W / m·K. When the fire or heat temperature reaches about 500°C, the elastic modulus, yield strength and ultimate strength of the steel will be significantly reduced, and the strain will increase sharply, resulting in rapid distortion and deformation, resulting in partial or complete collapse of the steel structure. Experiments have shown that steel has the characteristics of heat resistance but not high temperature resistance, and as the temperature increases, the strength of steel will gradually decrease. For example, under the action of fire, when the temperature of steel structural members reaches 350°C, 500°C, and 600°C,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/04C09D1/00C09D5/18
CPCC09D1/00C09D1/04C09D5/18C09D5/185C09D7/61C09D7/65C09D7/70
Inventor 郑善
Owner 天津朗华睿博科技有限公司
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