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A thin dry powder steel structure fireproof coating

A technology for fire retardant coatings and steel structures, applied in the field of coatings, can solve problems such as poor UV resistance, poor environmental performance, and easy blooming, and achieve the effects of improving radiation resistance, excellent alkali resistance, and improving dispersibility.

Active Publication Date: 2018-03-27
楚雄佑琳生科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, emulsion coatings are generally used to prepare fireproof coatings, which are basically prepared from pure organic matter, so they have poor UV resistance and weather resistance, and are prone to cracking, fading, and flowering after being irradiated by ultraviolet rays.
In addition, due to the different properties of steel structures and organic materials, thermal expansion and contraction are not the same, resulting in cracking and peeling of the paint surface or paint surface
In addition, all kinds of emulsion coatings contain chemical substances such as ethylene glycol (antifreeze agent) and ammonia water (pH value regulator), which will produce harmful gases such as volatile organic compounds (VOC) and formaldehyde during the construction process, which is environmentally friendly. Poor performance can have adverse effects on people's physical and mental health

Method used

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  • A thin dry powder steel structure fireproof coating

Examples

Experimental program
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Effect test

preparation example Construction

[0040] F1: polymer modified graphene oxide, prepared by the following method:

[0041] (1) Synthesis of NTDA-terminated polypyrrolene prepolymer

[0042] In a 100mL dry three-necked flask, add 10mmol of 3,3'-diaminobenzidine DAB, 11mmol of 1,4,5,8-naphthalene tetracarboxylic anhydride NTDA, 22 mmol of benzoic acid, 3mL of isoquinoline and 40mL m -cresol, nitrogen protection and magnetic stirring; after 2 hours, heat up to 85°C for 6h, 190°C for 21h, after the reaction, cool down to 70°C and quickly pour it into 150mL methanol to obtain a large amount of solid precipitation; wash the mixture repeatedly with methanol After the product was produced, the polymer was collected by suction filtration, and dried in a vacuum oven at 160°C for 20 h for use;

[0043] (2) Synthesis of amino-terminated sulfonated polyimide prepolymer

[0044]In a 100 mL dry three-necked flask, add 1.6 mmol 2,2'-bis(4-sulfophenoxy)biphenyldiamine, 12.5 mL m-creso1 and 0.8 mL triethylamine in sequence, an...

Embodiment 1

[0067] In parts by weight, add 30 parts of A1, 8 parts of B1, 12 parts of C1, 15 parts of D1, 8 parts of E1, 8 parts of F1, 7 parts of G1, 8 parts of H1 and 0.05 parts of I1 into the mixer and mix well for 10 minutes , and the output is dry powder coating. According to the weight ratio, mix the powder and water according to the ratio of 1:0.5, and then coat it on the steel structure to complete the construction.

Embodiment 2

[0069] In parts by weight, add 30 parts of A1, 8 parts of B1, 12 parts of C1, 15 parts of D1, 8 parts of E1, 8 parts of F2, 7 parts of G1, 8 parts of H1 and 0.05 parts of I1 into the mixer and mix thoroughly for 10 minutes , and the output is dry powder coating. According to the weight ratio, mix the powder and water according to the ratio of 1:0.5, and then coat it on the steel structure to complete the construction.

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Abstract

The invention discloses a thin dry powder fire-resistant coating for a steel structure. The fire-resistant coating is prepared from, by weight, white cement, titanium dioxide, calcined kaolin, calcium carbonate, polydimethylsiloxane, polymer-modified oxidized graphene, sulfonated polybenzimidazole-modified meso-porous silicon, KH-560 and aeolian sand. The thin dry powder fire-resistant coating for the steel structure has the advantages that the fire resistance is excellent, the adhesive force is high, the wear resistance is good, the weather resistance, the water resistance and the radiation resistance are good, a surface layer of the coating is smooth and fine, and greenness and environmental friendliness are achieved.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a thin dry powder fireproof coating for steel structures. Background technique [0002] With the construction and development of large and medium-sized cities, steel structures have become a very important building application material, and are used in standard factory buildings, large stadiums, airports, bridges, three-dimensional garages and nuclear buildings. However, the critical temperature of steel is 540°C, and its fire resistance is far inferior to that of brick-concrete structures. At this temperature, its bearing capacity will be reduced by about half. In a general fire, this temperature can be reached in about 15 minutes, leading to the collapse of the building. This characteristic determines that corresponding fire prevention measures must be taken for steel structure buildings. Usually, fire retardant coatings are painted on the surface of steel structures to ensur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C08G81/00C04B20/10C04B111/28
CPCC04B20/1037C04B28/04C04B2111/00525C04B2111/28C08G81/00C04B14/305C04B14/106C04B14/28C04B24/42C04B14/024C04B14/06C04B14/068
Inventor 容七英
Owner 楚雄佑琳生科技有限公司
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