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Novel high-temperature resistant environment-friendly steel structure fireproof coating and preparation method thereof

A fire retardant coating and high temperature resistant technology, applied in the direction of fire retardant coatings, polyurea/polyurethane coatings, coatings, etc. Simple process and low cost effect

Active Publication Date: 2019-08-16
CHINA JINGYE ENG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 anti-ultraviolet ability and poor weather resistance. After being irradiated by ultraviolet rays, they are easy to crack, fade, and bloom.
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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  • Novel high-temperature resistant environment-friendly steel structure fireproof coating and preparation method thereof
  • Novel high-temperature resistant environment-friendly steel structure fireproof coating and preparation method thereof
  • Novel high-temperature resistant environment-friendly steel structure fireproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of a high-temperature-resistant environmental protection steel structure fireproof coating:

[0029] (1) Preparation of silane-modified waterborne polyurethane resin

[0030] (1) Carry out batching as shown in the table below:

[0031] components Dosage(Kg) Polyol 12.3 polyisocyanate 19 chain extender 1.4 crosslinking agent 1.3 Triethylamine 4.2 coupling agent 0.8 Coalescent 1 total 40

[0032] (2) Preparation process

[0033] Add polyol, polyisocyanate, chain extender, and crosslinking agent into the reaction kettle according to the above ingredients, heat to 60°C and react, then add triethylamine, coupling agent, and add film-forming aids during the reaction, as needed An appropriate amount of dispersing aid can also be added to disperse at a high speed to obtain a silane-modified water-based polyurethane resin.

[0034] (2) Prepare high-temperature-resistant environmental protection steel s...

Embodiment 2

[0049] Preparation of a high-temperature-resistant environmental protection steel structure fireproof coating:

[0050] (1) Preparation of silane-modified waterborne polyurethane resin

[0051] (1) Carry out batching as shown in the table below:

[0052] components Dosage(Kg) Polyol 10.3 polyisocyanate 17 chain extender 1.5 crosslinking agent 1.2 Triethylamine 5.3 coupling agent 0.4 Coalescent 1.3 total 37

[0053] (2) Preparation process

[0054] According to the above ingredients, add polyol, polyisocyanate, chain extender, and crosslinking agent to the reaction kettle, heat to 60°C, add triethylamine, coupling agent, and add film-forming aids during the reaction. Add appropriate amount of dispersing aid, stir and disperse to prepare silane-modified water-based polyurethane resin.

[0055] (2) Prepare high-temperature-resistant environmental protection steel structure fireproof coating of the present invention...

Embodiment 3

[0066] Preparation of a high-temperature-resistant environmental protection steel structure fireproof coating:

[0067] (1) Preparation of silane-modified waterborne polyurethane resin

[0068] (1) Carry out batching as shown in the table below:

[0069]

[0070]

[0071] (2) Preparation process

[0072] Put polyol, polyisocyanate, chain extender, and crosslinking agent into the reaction kettle according to the above ingredients, heat it to about 65°C, add triethylamine, coupling agent, and add film-forming aid during the reaction process. Appropriate amount of dispersant, high-speed dispersion, to prepare silane-modified water-based polyurethane resin.

[0073] (2) Prepare high-temperature-resistant environmental protection steel structure fireproof coating of the present invention

[0074] (1) The main components and proportions of high temperature resistant and environmentally friendly steel structure fire retardant coatings are detailed in the table below:

[007...

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Abstract

The invention provides a novel high-temperature resistant environment-friendly steel structure fireproof coating which comprises the following raw materials: 35-40 parts of silane modified water-basedpolyurethane resin, 18-20 parts of kyanite micropowder, 18-20 parts of silicon nitride, 2-3 parts of titanium dioxide, 3-6 parts of sepiolite and 13-23 parts of water. The preparation method of the fireproof coating comprises the following steps: in the first step, polyol, polyisocyanate, a chain extender and a crosslinking agent are put into a reaction kettle for heating reaction, triethylamine,a coupling agent and a film forming additive are added, and high-speed dispersion is carried out to prepare silane modified water-based polyurethane resin; and in the second step, kyanite micropowder, the silicon nitride, the titanium dioxide, the sepiolite and the water are added in proportion and stirred and mixed evenly to obtain the finished product. The steel structure fireproof coating caneffectively play a role in fire prevention and heat insulation, the expansion ratio can reach more than 10 times, and the fire resistance limit can reach 60-180 minutes. When a fire occurs, the novelhigh-temperature resistant environment-friendly steel structure fireproof coating can rapidly expand to form a fire-resistant and heat-insulating protective layer, thus improving the fire resistance limit of steel structures.

Description

technical field [0001] The invention relates to the technical field of a new type of fireproof coating, in particular to a high-temperature resistant and environmentally friendly steel structure fireproof coating, and at the same time, the invention also relates to a preparation method of the high temperature resistant and environmentally friendly steel structure fireproof coating. Background technique [0002] As a form of high-rise building structure, steel structure is widely used in the construction industry due to its high strength, light weight, good extensibility, earthquake resistance and short construction period, but because the steel structure itself is not combustible, The problem of fire and heat insulation protection of steel structures was once neglected by people. According to relevant domestic and foreign reports and the tests and statistics of relevant institutions, the fire resistance of steel structure buildings is worse than that of masonry structures an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/18C09D7/61
CPCC08K2003/2241C08K2201/014C08L2201/02C08L2201/08C09D5/18C09D5/185C09D175/04C09D7/61C08K3/34C08K3/346C08K3/22C08K3/00
Inventor 王东林何鸣詹贺添
Owner CHINA JINGYE ENG TECH CO LTD
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