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Fireproof coating for building

A fire-resistant coating and coating technology, applied in fire-resistant coatings, cement coatings, etc., can solve the problems of fire resistance, strength, water resistance, acid resistance, and heat and humidity resistance that cannot fully meet the fire protection requirements of buildings, and achieve strong adhesion, The effect of reducing dry density and stabilizing performance

Inactive Publication Date: 2013-06-12
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Therefore, the prior art products cannot fully meet the fireproof requirements of buildings in terms of fire resistance, strength, water resistance, acid resistance, and heat and humidity resistance.

Method used

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  • Fireproof coating for building

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the preparation of formula I compound

[0022] In a 500 ml single-necked flask, o-cresol (15 g, 138.7 mmol), sodium thiocyanate (34 g, 419.3 mmol), sodium bromide (16 g, 155.5 mmol) were successively weighed, and 200 ml Methanol was stirred, cooled to 0°C, and liquid bromine (8.6 ml, 167 mmol) diluted with 30 ml of methanol was added dropwise. After the addition was complete, the reaction was incubated for 1 hour, then naturally rose to room temperature, and the reaction was continued for 4 hours. After the reaction, add 200 ml of saturated aqueous sodium bicarbonate solution, stir for 10 minutes, extract with ethyl acetate (2×500 ml), combine the organic phases, dry over anhydrous magnesium sulfate, filter, and concentrate under reduced pressure to obtain a yellow gum . Column chromatography (silica gel H: 300-400 mesh; petroleum ether / ethyl acetate=8:1) gave 16 g of 3-methyl-4-hydroxy-phenylthiocyanic acid (white solid, yield: 69.8%).

[0023] In a 500...

Embodiment 2

[0027] 25 parts by weight of Portland cement, 17 parts by weight of ammonium dichromate, 6 parts by weight of light calcium carbonate, 2 parts by weight of aluminum silicate, 7 parts by weight of fly ash hollow beads, 6 parts by weight of One part of wollastonite powder and 0.2 part by weight of the compound of formula I were put into a V-shaped forced mixer, started and stirred for 15 minutes to form a powdery mixture. Take water as needed and the above-mentioned fireproof coating powder in a weight ratio of 0.8, and stir to form a thick slurry-like waterproof coating for buildings.

Embodiment 3

[0029] The Portland cement of 29 parts by weight, the ammonium dichromate of 20 parts by weight, the light calcium carbonate of 8 parts by weight, the aluminum silicate of 2 parts by weight, the fly ash hollow floating beads of 70 parts by weight, 7 parts by weight One part of wollastonite powder and 0.25 part by weight of the compound of formula I were put into a V-shaped forced mixer, started and stirred for 12 minutes to form a powdery mixture. Take water as needed and the above-mentioned fireproof coating powder in a weight ratio of 0.8, and stir to form a thick slurry-like waterproof coating for buildings.

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Abstract

The invention provides a fireproof coating for building. The coating is composed of portland cement, ammonium dichromate, light calcium carbonate, aluminium silicate, flyash hollow float beads, wollastonite in powder and compound in formula I. The coating is prepared by putting the components into a V-shaped forced mixer according to proportion to prepare the powdery mixer after stirring for 10-15 minutes, mixing the water with the fireproof coating powder in a weight ratio of 0.8-0.85, and stirring to form slurry. When the slurry is in use, spraying is carried out by using a sprayer from bottom to top starting from the top of the building to achieve a predetermined thickness.

Description

technical field [0001] The invention relates to a fireproof material coating and its preparation method and construction technology, in particular to a fireproof coating sprayed on the surface of a building wall. This patent is funded by the Beijing Science and Technology New Star Project (Z121106002512008), the National Natural Science Foundation of China (41202214), the Top Youth Talent Project of North China University of Technology (BJRC201308), and the Youth Key Research Fund Project of North China University of Technology. Background technique [0002] Buildings refer to structures built on mountains, rivers, straits, and urban grounds for the passage of vehicles, pedestrians, water, pipelines, etc., or for mining, military engineering, etc. Since the building is made of concrete and reinforced concrete, prestressed concrete floor fireproof coatings can be used for fire prevention. The inner reinforced concrete heats up rapidly in a fire and reduces its strength, so a...

Claims

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Application Information

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IPC IPC(8): C09D1/08C09D5/18
Inventor 宋志飞崔琴焕孙世国冯少杰
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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