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Ultrathin steel structure fireproof coating and preparation method thereof

A technology for fire-resistant coatings and steel structures, applied in fire-resistant coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as excessive use of organic volatile solvents, rough surface of fire-resistant coatings, poor fire resistance and weather resistance, etc., to achieve Heat insulation reduces heat transfer, excellent flexibility, and increased protection

Inactive Publication Date: 2020-05-08
深圳深景达油墨化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing thick-coated fireproof coatings for steel structures are non-expanding fireproof coatings and are mainly composed of binders, aggregates and additives. The binders are selected from Portland cement, magnesium hydroxide, potassium silicate, aluminum ceramic powder, attapulgite clay, calcined magnesite and inorganic high-temperature binder, the aggregate is at least one composition selected from expanded vermiculite, expanded perlite, mineral wool and wollastonite, and the auxiliary The agent is one or more selected from boron oxides, ammonium oxides, magnesium-aluminum oxides and their hydroxides, but the thick-coated steel structure fireproof coating has a rough surface, poor color, and fire resistance and weather resistance. Poor sex
[0004] When the temperature of the steel structure reaches 500 degrees Celsius, its load-bearing capacity is greatly reduced. With the development of urban construction, the need for steel structure materials is greatly increased. Many metal surfaces need heat insulation, heat preservation, and fire prevention. Traditional oil-based fire-resistant coatings, organic volatile A large amount of solvent is used, which is difficult and inconvenient to use

Method used

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  • Ultrathin steel structure fireproof coating and preparation method thereof
  • Ultrathin steel structure fireproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 8 parts of silicone modified polyurethane resin, 15 parts of ammonium polyphosphate, 4 parts of mica powder, 3 parts of microbead powder, 2 parts of talcum powder, 1 part of kaolin, 10 parts of diatomaceous earth, 3 parts of flame retardant filler silica powder, 1 part of amino resin, 5 parts of environmentally friendly diluent, 0.1 part of defoamer, 0.5 part of dispersant, and 0.5 part of expanded graphite.

[0019] The preparation method of described fireproof coating, concrete steps are:

[0020] Step (1): Mix silicone-modified polyurethane resin, ammonium polyphosphate, mica powder, microbead powder, talcum powder, kaolin, and diatomaceous earth, and stir evenly;

[0021] Step (2): Add the mixture of step (1) into silica powder, amino resin, environmental diluent, defoamer, and dispersant, and stir for 10 minutes at a stirring speed of 600 r / min;

[0022] Step (3): adding the mixture of step (2) to expanded graphite, adding while stirring, the stirring speed is 800...

Embodiment 2

[0025] 15 parts of silicone modified polyurethane tree, 20 parts of ammonium polyphosphate, 7 parts of mica powder, 5 parts of microbead powder, 6 parts of talc powder, 4 parts of kaolin, 13 parts of diatomite, 5 parts of silicon micropowder as a flame retardant filler, 3 parts of amino resin, 10 parts of environmentally friendly thinner, 0.3 parts of defoamer, 1 part of dispersant, and 2 parts of expanded graphite.

[0026] The preparation method of described fireproof coating, concrete steps are:

[0027] Step (1): Mix silicone-modified polyurethane resin, ammonium polyphosphate, mica powder, microbead powder, talcum powder, kaolin, and diatomaceous earth, and stir evenly;

[0028] Step (2): Add the mixture of step (1) into silicon micropowder, amino resin, environmental diluent, defoamer, and dispersant, and stir for 12 minutes at a stirring speed of 700 r / min;

[0029] Step (3): adding the mixture of step (2) to expanded graphite, adding while stirring, the stirring speed...

Embodiment 3

[0032] 25 parts of silicone modified polyurethane resin, 25 parts of ammonium polyphosphate, 7 parts of mica powder, 5 parts of microbead powder, 6 parts of talc powder, 4 parts of kaolin, 13 parts of diatomite, 5 parts of silicon micropowder as a flame retardant filler, 4 parts of amino resin, 15 parts of environmentally friendly thinner, 0.4 parts of defoamer, 1.5 parts of dispersant, and 3.5 parts of expanded graphite.

[0033] The preparation method of described fireproof coating, concrete steps are:

[0034] (1) Mix organosilicon-modified polyurethane resin, ammonium polyphosphate, mica powder, micropearl powder, talcum powder, kaolin, and diatomaceous earth, and stir evenly;

[0035] (2) Add the mixture of step (1) into silicon micropowder, amino resin, environmental diluent, defoamer, and dispersant, and stir for 13 minutes at a stirring speed of 800 r / min;

[0036] (3) Add the mixture of step (2) to expanded graphite, add while stirring in the process, and the stirrin...

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Abstract

The invention discloses an ultrathin steel structure fireproof coating and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 8-35 parts of organic silicon modified polyurethane resin, 15-30 parts of a flame retardant, 20-50 parts of a flame-retardant filler, 3-8 parts of auxiliary flame-retardant filler silica powder, 1-6 parts of amino resin, 5-25 parts of an environment-friendly diluent, 0.1-0.5 part of a defoaming agent, 0.5-2 parts of a dispersing agent and 0.5-5 parts of expanded graphite. By means of the specific formula, the prepared coating has good adhesive force on steel, wherein the protection on the substrate is greatly improved. The coating is not cracked after curing of coatings; during fire, the coating can be attachedto a substrate to expand to form a carbonization layer and the effects of heat insulation and low heat transfer are achieved; compared with the traditional oil-based fireproof paint, the fireproof coating has the advantages that the use of an organic volatile solvent is reduced, the use difficulty is reduced, and the oil-based fireproof paint is more convenient and has a very good application prospect.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings and preparation methods thereof, in particular to an ultra-thin fireproof coating for steel structures and a preparation method thereof. Background technique [0002] With technological progress and social development, people pay more and more attention to environmental protection. Powder coatings with "economy, environmental protection, high efficiency and energy saving" have been developed rapidly, and various functional powder coatings have come out one after another. Improvement, the development of urban construction, and the continuous expansion of the scale of industrial and mining enterprises, the surface of many metal plates needs heat insulation, heat preservation, and fire prevention, such as the sandwich panels of polyurethane foam layers used in the walls of steel structure workshops, heating pipes, etc., due to these materials Rock wool is used as the sandwich layer, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D161/20C09D5/18C09D7/61
CPCC08K2003/323C08K2201/014C08L2201/02C09D5/185C09D175/04C09D7/61C09D7/70C08L61/20C08K13/04C08K3/36C08K7/24C08K3/32C08K3/34C08K3/346C08K7/26
Inventor 郑玉峰孙玉莲邓荣兰郑淇俽郑淇晏
Owner 深圳深景达油墨化工有限公司