CN111087839A - Fireproof flame-retardant coating for steel structure - Google Patents

Fireproof flame-retardant coating for steel structure Download PDF

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Publication number
CN111087839A
CN111087839A CN201911341205.5A CN201911341205A CN111087839A CN 111087839 A CN111087839 A CN 111087839A CN 201911341205 A CN201911341205 A CN 201911341205A CN 111087839 A CN111087839 A CN 111087839A
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CN
China
Prior art keywords
alkali metal
steel
metal silicate
retardant coating
fireproof flame
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Pending
Application number
CN201911341205.5A
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Chinese (zh)
Inventor
谢宇
谢德平
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Jiangxi Yiguan Coatings Co ltd
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Jiangxi Yiguan Coatings Co ltd
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Priority to CN201911341205.5A priority Critical patent/CN111087839A/en
Publication of CN111087839A publication Critical patent/CN111087839A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/06Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement
    • C09D1/08Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances cement with organic additives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/70Additives characterised by shape, e.g. fibres, flakes or microspheres

Abstract

The invention discloses a fireproof flame-retardant coating for a steel structure, which comprises the following components: the adhesive comprises portland cement and modified alkali metal silicate, the aggregate comprises expanded vermiculite, expanded perlite and aluminum silicate fiber, and the chemical auxiliary comprises a defoaming agent, a modifier, a hardening agent and a hydrophobic auxiliary. The invention has the following beneficial effects: the modified alkali metal silicate is obtained by modifying the alkali metal silicate, and then the modified alkali metal silicate and the silicate cement are mixed to form the cementing material, so that the adverse phenomena of cracking, powder removal and the like easily occurring on the coating can be effectively solved; the light heat-insulating aggregate such as expanded vermiculite and expanded perlite is adopted, so that the density of the coating can be reduced, and the aim of reducing the self weight of a steel structure is fulfilled.

Description

Fireproof flame-retardant coating for steel structure
Technical Field
The invention relates to a fireproof flame-retardant coating for a steel structure, and belongs to the technical field of fireproof coatings.
Background
The fireproof coating is characterized in that the fireproof capacity of the material can be improved, the flame spread and propagation speed can be slowed down, or the burning can be stopped within a certain time by brushing the coating on the surface of flammable materials, and the coating is called fireproof coating or flame-retardant coating. The steel structure fireproof paint basically comprises the following components: cementing materials (Portland cement, magnesium oxychloride, inorganic high-temperature adhesive and the like), aggregates (expanded vermiculite, expanded perlite, aluminum silicate fibers, mineral wool, rock wool and the like), chemical additives (modifiers, hardening agents, waterproof agents and the like) and water. The steel structure fire-retardant coating base material comprises Portland cement, magnesium oxychloride cement and inorganic adhesive, wherein the common inorganic adhesive comprises alkali metal silicate, phosphate and the like. However, free alkali metal ions are often present in the alkali metal silicate, and the acidic gas in the air, CO2, and the like will chemically react with the alkali metal silicate. When the alkali metal silicate is used alone as a base material of the coating, the coating film is not waterproof, not moisture-resistant and poor in weather resistance, and the coating is easy to crack, remove powder and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fireproof flame-retardant coating for a steel structure, which adopts Portland cement and modified alkali metal silicate to form a cementing material and can effectively solve the problem that the coating is easy to crack, remove powder and the like.
The invention is realized by the following scheme: a fireproof flame-retardant coating for steel structures comprises the following components: cementing material, aggregate, chemical auxiliary agent, nano titanium alloy and deionized water.
The cementing material consists of Portland cement and modified alkali metal silicate, wherein the mass percentage of the Portland cement is 20-24, and the mass percentage of the modified alkali metal silicate is 10-12.
The aggregate is composed of expanded vermiculite, expanded perlite and aluminum silicate fiber, wherein the mass percentage of the expanded vermiculite is 25-30, the mass percentage of the expanded perlite is 10-14, and the mass percentage of the aluminum silicate fiber is 6-10.
The chemical auxiliary agent consists of an antifoaming agent, a modifier, a hardening agent and a hydrophobic auxiliary agent, wherein the antifoaming agent is 0.2-1 wt%, the modifier is 0.5-2 wt%, the hardening agent is 0.2-1 wt%, and the hydrophobic auxiliary agent is 0.1-1 wt%.
The mass percentage of the nano titanium alloy is 2-3.
The mass percentage of the deionized water is 2-26.
A preparation method of a fireproof flame-retardant coating for a steel structure comprises the following steps:
step one, modifying alkali metal silicate to obtain modified alkali metal silicate;
step two, respectively expanding vermiculite and perlite;
and step three, adding the modified alkali metal silicate obtained in the step one, the expanded vermiculite obtained in the step two, the expanded perlite, the silicate cement, the aluminum silicate fiber, the defoaming agent, the modifier, the hardening agent, the hydrophobic auxiliary agent, the nano titanium alloy and the deionized water into a reaction kettle, stirring for 45 minutes at the stirring temperature of 35-45 degrees, and performing ultrasonic dispersion to uniformly mix the materials.
The preparation method of the modified alkali metal silicate in the first step comprises the following steps: firstly, grinding the alkali metal silicate, and then mixing the powdery alkali metal silicate with the high-strength polyurethane to form the modified alkali metal silicate.
And drying, crushing and screening the vermiculite in the step two, calcining at the temperature of 850-1000 ℃, and expanding particles by more than 20 times to form expanded vermiculite.
And (2) crushing, screening, preheating and instantly roasting the perlite in the second step to expand the perlite to 20 times to form expanded perlite with a honeycomb foam structure.
The invention has the beneficial effects that:
1. the fireproof flame-retardant coating for the steel structure modifies the alkali metal silicate to obtain the modified alkali metal silicate, and then the modified alkali metal silicate and the silicate cement are mixed to form the cementing material, so that the problems that the coating is easy to crack, remove powder and the like can be effectively solved;
2. the fireproof flame-retardant coating for the steel structure adopts the light heat-insulating aggregate such as the expanded vermiculite and the expanded perlite, so that the density of the coating can be reduced, and the aim of reducing the self weight of the steel structure is fulfilled.
Detailed Description
The present invention is further illustrated below, but the scope of the invention is not limited to the disclosure.
In the following description, for purposes of clarity, not all features of an actual implementation are described, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail, it being understood that in the development of any actual embodiment, numerous implementation details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, changing from one implementation to another, and it being recognized that such development effort might be complex and time consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
Example 1: a fireproof flame-retardant coating for steel structures comprises the following components: the adhesive comprises 20 mass percent of portland cement and 10 mass percent of modified alkali metal silicate, the aggregate comprises expanded vermiculite, expanded perlite and aluminum silicate fibers, wherein the expanded vermiculite is 25 mass percent, the expanded perlite is 10 mass percent, the aluminum silicate fibers are 6 mass percent, the chemical auxiliary comprises an antifoaming agent, a modifying agent, a hardening agent and a hydrophobic auxiliary agent, the antifoaming agent is 0.2 mass percent, the modifying agent is 0.5 mass percent, the hardening agent is 0.2 mass percent, the hydrophobic auxiliary agent is 0.1 mass percent, the nano titanium alloy is 2 mass percent, and the deionized water is 26 mass percent.
A preparation method of a fireproof flame-retardant coating for a steel structure comprises the following steps:
grinding alkali metal silicate, and then mixing the powdery alkali metal silicate with high-strength polyurethane to form modified alkali metal silicate;
step two, respectively expanding vermiculite and perlite, drying, crushing and screening the vermiculite, calcining the vermiculite at the temperature of 850-; the perlite is crushed, screened, preheated and instantaneously roasted to be expanded to 20 times to form expanded perlite with a honeycomb foam structure;
and step three, adding the modified alkali metal silicate obtained in the step one, the expanded vermiculite obtained in the step two, the expanded perlite, the portland cement, the aluminum silicate fiber, the defoaming agent, the modifier, the hardening agent, the hydrophobic auxiliary agent, the nano titanium alloy and the deionized water into a reaction kettle, stirring for 45 minutes at the stirring temperature of 35 degrees, and performing ultrasonic dispersion to uniformly mix the materials.
Example 2: a fireproof flame-retardant coating for steel structures comprises the following components: the adhesive comprises 24 mass percent of Portland cement and 12 mass percent of modified alkali metal silicate, the aggregate comprises expanded vermiculite, expanded perlite and aluminum silicate fibers, the expanded vermiculite is 30 mass percent, the expanded perlite is 14 mass percent, the aluminum silicate fibers are 10 mass percent, the chemical auxiliary comprises a defoaming agent, a modifying agent, a hardening agent and a hydrophobic auxiliary agent, the defoaming agent is 1 mass percent, the modifying agent is 2 mass percent, the hardening agent is 1 mass percent, the hydrophobic auxiliary agent is 1 mass percent, the nano titanium alloy is 3 mass percent, and the deionized water is 2 mass percent.
A preparation method of a fireproof flame-retardant coating for a steel structure comprises the following steps:
grinding alkali metal silicate, and then mixing the powdery alkali metal silicate with high-strength polyurethane to form modified alkali metal silicate;
step two, respectively expanding vermiculite and perlite, drying, crushing and screening the vermiculite, calcining the vermiculite at the temperature of 850-; the perlite is crushed, screened, preheated and instantaneously roasted to be expanded to 20 times to form expanded perlite with a honeycomb foam structure;
and step three, adding the modified alkali metal silicate obtained in the step one, the expanded vermiculite obtained in the step two, the expanded perlite, the portland cement, the aluminum silicate fiber, the defoaming agent, the modifier, the hardening agent, the hydrophobic auxiliary agent, the nano titanium alloy and the deionized water into a reaction kettle, stirring for 45 minutes at the stirring temperature of 40 degrees, and performing ultrasonic dispersion to uniformly mix the materials.
Example 3: a fireproof flame-retardant coating for steel structures comprises the following components: the adhesive comprises Portland cement and modified alkali metal silicate, wherein the Portland cement is 22 mass percent, the modified alkali metal silicate is 11 mass percent, the aggregate comprises expanded vermiculite, expanded perlite and aluminum silicate fibers, the expanded vermiculite is 28 mass percent, the expanded perlite is 12 mass percent, the aluminum silicate fibers are 8 mass percent, the chemical auxiliary comprises a defoaming agent, a modifying agent, a hardening agent and a hydrophobic auxiliary agent, the defoaming agent is 0.5 mass percent, the modifying agent is 1 mass percent, the hardening agent is 0.4 mass percent, the hydrophobic auxiliary agent is 0.6 mass percent, the nano titanium alloy is 2.5 mass percent, and the deionized water is 14 mass percent.
A preparation method of a fireproof flame-retardant coating for a steel structure comprises the following steps:
grinding alkali metal silicate, and then mixing the powdery alkali metal silicate with high-strength polyurethane to form modified alkali metal silicate;
step two, respectively expanding vermiculite and perlite, drying, crushing and screening the vermiculite, calcining the vermiculite at the temperature of 850-; the perlite is crushed, screened, preheated and instantaneously roasted to be expanded to 20 times to form expanded perlite with a honeycomb foam structure;
and step three, adding the modified alkali metal silicate obtained in the step one, the expanded vermiculite obtained in the step two, the expanded perlite, the portland cement, the aluminum silicate fiber, the defoaming agent, the modifier, the hardening agent, the hydrophobic auxiliary agent, the nano titanium alloy and the deionized water into a reaction kettle, stirring for 45 minutes at the stirring temperature of 45 degrees, and performing ultrasonic dispersion to uniformly mix the materials.
Although the invention has been described and illustrated in some detail, it should be understood that various modifications may be made to the described embodiments or equivalents may be substituted, as will be apparent to those skilled in the art, without departing from the spirit of the invention.

Claims (10)

1. The fireproof flame-retardant coating for the steel structure is characterized in that: which comprises the following components: cementing material, aggregate, chemical auxiliary agent, nano titanium alloy and deionized water.
2. The fireproof flame-retardant coating for the steel structure according to claim 1, wherein: the cementing material consists of Portland cement and modified alkali metal silicate, wherein the mass percentage of the Portland cement is 20-24, and the mass percentage of the modified alkali metal silicate is 10-12.
3. The fireproof flame-retardant coating for the steel structure according to claim 1, wherein: the aggregate is composed of expanded vermiculite, expanded perlite and aluminum silicate fiber, wherein the mass percentage of the expanded vermiculite is 25-30, the mass percentage of the expanded perlite is 10-14, and the mass percentage of the aluminum silicate fiber is 6-10.
4. The fireproof flame-retardant coating for the steel structure according to claim 1, wherein: the chemical auxiliary agent consists of an antifoaming agent, a modifier, a hardening agent and a hydrophobic auxiliary agent, wherein the antifoaming agent is 0.2-1 wt%, the modifier is 0.5-2 wt%, the hardening agent is 0.2-1 wt%, and the hydrophobic auxiliary agent is 0.1-1 wt%.
5. The fireproof flame-retardant coating for the steel structure according to claim 1, wherein: the mass percentage of the nano titanium alloy is 2-3.
6. The fireproof flame-retardant coating for the steel structure according to claim 1, wherein: the mass percentage of the deionized water is 2-26.
7. A method for preparing the fireproof flame-retardant coating for the steel structure based on any one of claims 1 to 6, which is characterized in that: the method comprises the following steps:
step one, modifying alkali metal silicate to obtain modified alkali metal silicate;
step two, respectively expanding vermiculite and perlite;
and step three, adding the modified alkali metal silicate obtained in the step one, the expanded vermiculite obtained in the step two, the expanded perlite, the silicate cement, the aluminum silicate fiber, the defoaming agent, the modifier, the hardening agent, the hydrophobic auxiliary agent, the nano titanium alloy and the deionized water into a reaction kettle, stirring for 45 minutes at the stirring temperature of 35-45 degrees, and performing ultrasonic dispersion to uniformly mix the materials.
8. The preparation method of the fireproof flame-retardant coating for the steel structure, according to claim 7, is characterized in that: the preparation method of the modified alkali metal silicate in the first step comprises the following steps: firstly, grinding the alkali metal silicate, and then mixing the powdery alkali metal silicate with the high-strength polyurethane to form the modified alkali metal silicate.
9. The preparation method of the fireproof flame-retardant coating for the steel structure, according to claim 7, is characterized in that: and drying, crushing and screening the vermiculite in the step two, calcining at the temperature of 850-1000 ℃, and expanding particles by more than 20 times to form expanded vermiculite.
10. The preparation method of the fireproof flame-retardant coating for the steel structure, according to claim 7, is characterized in that: and (2) crushing, screening, preheating and instantly roasting the perlite in the second step to expand the perlite to 20 times to form expanded perlite with a honeycomb foam structure.
CN201911341205.5A 2019-12-24 2019-12-24 Fireproof flame-retardant coating for steel structure Pending CN111087839A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111849229A (en) * 2020-07-30 2020-10-30 湖南理工学院 Fire escape passage fireproof powder coating and preparation process thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1648185A (en) * 2004-10-22 2005-08-03 厦门大学 Polymer modified cement base thick coated type steel structure fire-proof paint
CN102476939A (en) * 2010-11-24 2012-05-30 高建业 Outdoor thick type fireproof coating for steel structure and its manufacturing method
CN106904908A (en) * 2017-03-03 2017-06-30 北京茂源防火材料厂 The indoor thicker fire-resistant coating for steel structure and its construction method of sound-absorption and heat-insulation
CN109439043A (en) * 2018-10-22 2019-03-08 曾金菊 A kind of fire-resistant coating for steel structure and preparation method thereof
CN109534777A (en) * 2018-10-09 2019-03-29 张健 A kind of exterior wall fire resistant flame retardant coating and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1648185A (en) * 2004-10-22 2005-08-03 厦门大学 Polymer modified cement base thick coated type steel structure fire-proof paint
CN102476939A (en) * 2010-11-24 2012-05-30 高建业 Outdoor thick type fireproof coating for steel structure and its manufacturing method
CN106904908A (en) * 2017-03-03 2017-06-30 北京茂源防火材料厂 The indoor thicker fire-resistant coating for steel structure and its construction method of sound-absorption and heat-insulation
CN109534777A (en) * 2018-10-09 2019-03-29 张健 A kind of exterior wall fire resistant flame retardant coating and preparation method thereof
CN109439043A (en) * 2018-10-22 2019-03-08 曾金菊 A kind of fire-resistant coating for steel structure and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111849229A (en) * 2020-07-30 2020-10-30 湖南理工学院 Fire escape passage fireproof powder coating and preparation process thereof

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