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Environment-friendly fire-proof coating for steel structures and preparation method thereof

A technology of fire-resistant coatings and section steel, applied in fire-resistant coatings, coatings, etc., can solve environmental pollution, poisonous and harmful problems, and achieve the effects of improving heat insulation effect, stable coating system, and better fire prevention effect

Active Publication Date: 2012-07-04
JIANGSU HUAJIAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be known from the content of the article that if the coating thickness of the current steel structure fireproof coating is relatively thin, it needs to be applied to components such as flame retardants and foaming agents. Most of these components are toxic and harmful and will pollute the environment.

Method used

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  • Environment-friendly fire-proof coating for steel structures and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Silica-hydroxyethyl cellulose organic-inorganic composite glue 100 parts

[0033] Coating modified hollow glass microspheres 80 parts

[0034] Nano silica powder 10 parts

[0035]The silica-hydroxyethyl cellulose organic-inorganic composite glue is formed by uniformly mixing silica colloid and hydroxyethyl cellulose aqueous solution in a certain proportion, and the mass ratio of silica to hydroxyethyl cellulose is 5:1 .

[0036] The diameter range of the coated modified hollow glass microspheres is 10-18 microns, and the density is 0.1 g / cm3. The coating layer on its surface is a guar gum-silicon oxide organic-inorganic composite coating. The hydroxyl groups of the guar gum molecules and the silica colloidal particles are formed in the hollow through hydrogen bonds and partially through the cross-linking of glutaraldehyde. It is formed by coating the surface of glass microspheres, the weight ratio of guar gum to silicon oxide in the composite coating is 5:1, and the ...

Embodiment 2

[0047] Silica-hydroxyethyl cellulose organic-inorganic composite glue 100 parts

[0048] Coating modified hollow glass microspheres 150 parts

[0049] Nano silica powder 10 parts

[0050] The silica-hydroxyethyl cellulose organic-inorganic composite glue is formed by uniformly mixing silica colloid and hydroxyethyl cellulose aqueous solution in a certain proportion, and the mass ratio of silica to hydroxyethyl cellulose is 20:1 .

[0051] The diameter range of the coated modified hollow glass microspheres is 80-100 microns, and the density is 0.3 g / cm3. The coating layer on its surface is a guar gum-silicon oxide organic-inorganic composite coating. The hydroxyl groups of the guar gum molecules and the silica colloidal particles are formed in the hollow through hydrogen bonds and partially through the cross-linking of glutaraldehyde. It is formed by coating the surface of glass microspheres, the weight ratio of guar gum to silicon oxide in the composite coating is 1:2, and ...

Embodiment 3

[0059] Silica-hydroxyethyl cellulose organic-inorganic composite glue 100 parts

[0060] Coating modified hollow glass microspheres 120 parts

[0061] Nano silica powder 10 parts

[0062] The silica-hydroxyethyl cellulose organic-inorganic composite glue is formed by uniformly mixing silica colloid and hydroxyethyl cellulose aqueous solution in a certain proportion, and the mass ratio of silica to hydroxyethyl cellulose is 10:1 .

[0063] The diameter range of the coated modified hollow glass microsphere is 30-50 microns, and the density is 0.18g / cm3. The coating layer on its surface is a guar gum-silicon oxide organic-inorganic composite coating. The hydroxyl groups of the guar gum molecules and the silica colloidal particles are formed in the hollow through hydrogen bonds and partially through the cross-linking of glutaraldehyde. The surface coating of glass microspheres is formed, the weight ratio of guar gum to silicon oxide in the composite coating is 1:1, and the weig...

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Abstract

The invention discloses a preparation method of an environment-friendly fire-proof coating for steel structures. The environment-friendly fire-proof coating for steel structures comprises the following components in parts by weight: 100 parts of silica-hydroxyethylcellulose organic-inorganic compound rubbers, 80-150 parts of cladded and modified hollow glass microspheres and 10 parts of nano silica powder. The silica-hydroxyethylcellulose organic-inorganic compound rubbers are adopted to form a heat-resistant matrix. The hollow glass microspheres with surfaces cladded by silica-guar gum organic-inorganic compound coatings are adopted as the heat insulating fillers. High-efficiency heat insulation layers are formed by uniformly arranging the hollow glass microspheres according to rules through hydrogen bonding and filling nano silica. Through combined action of each component and the structure, the heat resistance limit of the coating can reach 105min (the thickness of the coatings is 3mm). The preparation method of the coating is simple, low in cost and pollution-free. The coating system does not discharge pollutants when being heated and is really environment-friendly.

Description

technical field [0001] The invention relates to a steel structure fireproof coating and a preparation method thereof, in particular to a hollow glass microsphere coated with a silicon oxide-guar gum organic-inorganic composite coating, which is uniformly dispersed in a silicon oxide-guar gum organic-inorganic composite coating. The invention relates to an environment-friendly steel structure fireproof coating formed in cellulose-based organic-inorganic composite glue, and a preparation method of the coating, belonging to the field of functional coatings. Background technique [0002] The steel structure has fast construction speed, high flexibility and firmness, and its proportion in the building is gradually increasing. However, ordinary steel structures are not fire-resistant and easily lose their bearing capacity at high temperatures. With the establishment and improvement of my country's fire protection regulations, the fire protection of steel structures has been highly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D101/26C09D7/12C09D5/18
Inventor 王立群王吉骞陈益民施卫东
Owner JIANGSU HUAJIAN CONSTR