Ultrathin steel structure waterproof coating and preparation method thereof

A technology for fire retardant coatings and steel structures, applied in the direction of fire retardant coatings, coatings, etc., can solve the problems that the fire resistance effect is not as good as that of non-intumescent fire retardant coatings, the load of steel structure increases greatly, the application effect is not ideal, etc. The effect of aging, improving thermal insulation ability, and high expansion ratio of coating

Active Publication Date: 2016-08-10
SICHUAN TIANFU FIRE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other non-intumescent fire retardant coatings, the existing fire retardant coatings for steel structures have lower thermal insulation capacity at the initial stage of foaming and expansion, resulting in a large temperature rise of the steel structure before the thermal insulation layer is fully expanded, and the overall fire resistance effect is usually not as good as Non-intumescent fire-resistant coatings, and most of the coatings increase the load on the steel structure greatly, the application effect is not ideal, and the use is limited

Method used

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  • Ultrathin steel structure waterproof coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] S0: Spherical nano-silica airgel particles with a diameter of 50nm were selected, and the surface was firstly modified by grafting hydrophobic groups, specifically using trimethylchlorosilane grafting to replace hydroxyl groups;

[0051] S1: Prepare materials according to the following component ratios: 10 parts of modified nano-silica airgel, 20 parts of acrylic emulsion, 45 parts of melamine, 40 parts of pentaerythritol, 70 parts of ammonium polyphosphate with a polymerization degree of 600, 10 parts of titanium dioxide, 5 parts of sepiolite fiber, 10 parts of talc, 15 parts of expandable graphite, 0.5 part of water-based wetting and dispersing agent, 0.03 part of modified organic bentonite, 0.1 part of water-based leveling agent;

[0052] S2: Put the components obtained in S1 into the high-speed disperser in turn, disperse at a low speed of 800r / pm for 10min, and then disperse at a high speed of 4000r / pm for 25min;

[0053] S3: standing and aging for 10 hours;

[00...

Embodiment 2

[0056] S0: Select spherical nano-silica airgel particles with a diameter of 100nm, and firstly modify the surface by grafting hydrophobic groups, specifically using hexamethyldioxysilane grafting to replace hydroxyl groups;

[0057] S1: Prepare materials according to the following component ratios: 5 parts of modified nano-silica airgel, 45 parts of acrylic emulsion, 30 parts of melamine, 30 parts of pentaerythritol, 50 parts of ammonium polyphosphate with a degree of polymerization of 800, 15 parts of titanium dioxide, 15 parts of sepiolite fiber, 5 parts of talc, 5 parts of expandable graphite, 0.2 part of water-based wetting and dispersing agent, 0.02 part of modified organic bentonite, 0.2 part of water-based leveling agent;

[0058] S2: Put the components obtained in S1 into the high-speed disperser in turn, disperse at a low speed of 1000r / pm for 20min, and then disperse at a high speed of 3000r / pm for 25min;

[0059] S3: standing and aging for 12 hours;

[0060] S4: Me...

Embodiment 3

[0062] S0: Spherical nano-silica airgel particles with a diameter of 150nm are selected, and the surface is firstly modified by grafting hydrophobic groups, specifically using triethylchlorosilane grafting to replace hydroxyl groups;

[0063] S1: Prepare materials according to the following component ratios: 15 parts of modified nano-silica airgel, 15 parts of acrylic emulsion, 60 parts of melamine, 60 parts of pentaerythritol, 60 parts of ammonium polyphosphate with a polymerization degree of 1000, 12 parts of titanium dioxide, 10 parts of sepiolite fiber, 15 parts of talc, 10 parts of expandable graphite, 0.8 part of water-based wetting and dispersing agent, 0.08 part of modified organic bentonite, 0.2 part of water-based leveling agent;

[0064] S2: Put the components obtained in S1 into the high-speed disperser in turn, disperse at a low speed of 900r / pm for 15min, and then disperse at a high speed of 5000r / pm for 20min;

[0065] S3: standing and aging for 15 hours;

[00...

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Abstract

Ultrathin steel structure waterproof coating is characterized by being made from the following materials according to parts by weight: 5-20 parts of nano silicon dioxide aerosol, 15-45 parts of acrylic emulsion, 30-80 parts of melamine, 30-60 parts of pentaerythritol, 50-80 parts of ammonium polyphosphate, 10-15 parts of titanium dioxide, 5-15 parts of sepiolite fiber, 5-15 parts of talc, 5-15 parts of expansible graphite, 0.2-0.8 part of a waterborne wetting dispersant, 0.02-0.08 part of modified organic bentonite, and 0.05-0.2 part of a waterborne leveling agent. The preparation method comprises: weighing the components according to their ratio; adding the components sequentially into a high-speed dispersing machine for mixing and dispersing; standing and aging for 10-15 h; metering and packaging. The fireproof coating of the invention can reduce the increase in the steel structure loading to the coating and has no influence in the expanding and foaming process, expansion rate of a coating layer is high, heat isolating capacity of the fireproof coating can be improved greatly, and fire resistance of a steel structure can be improved greatly.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings, in particular to an ultra-thin fireproof coating for steel structures and a preparation method thereof. Background technique [0002] Steel structure engineering has the advantages of light weight, large usable space, easy installation, short construction period, good seismic performance, fast investment recovery, and less environmental pollution. It is widely used in modern times, but it has the fatal weakness of poor fire resistance. Under normal load conditions, the steel structure will lose its load-bearing function at around 540°C, while in a hydrocarbon fire environment, the temperature usually rises to 1000°C within 10 minutes. Under such an environment, the steel structure will quickly deform. Local damage occurs and the bearing capacity is lost. In order to improve the fire-resistant performance of steel structures, the outer periphery of steel structures needs to be clad wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/18C09D7/12
CPCC08K3/36C08K9/06C08K13/06C08K2201/011C09D5/185C09D7/62C09D133/00
Inventor 龚斌陈光亮戚天游周清
Owner SICHUAN TIANFU FIRE MATERIAL
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