CN112029333A - Intumescent steel structure fireproof coating and preparation method and application thereof - Google Patents
Intumescent steel structure fireproof coating and preparation method and application thereof Download PDFInfo
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- CN112029333A CN112029333A CN202010961440.9A CN202010961440A CN112029333A CN 112029333 A CN112029333 A CN 112029333A CN 202010961440 A CN202010961440 A CN 202010961440A CN 112029333 A CN112029333 A CN 112029333A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D103/00—Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09D103/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
- C08L2205/20—Hollow spheres
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses an intumescent fire retardant coating for a steel structure, which is prepared from the following raw materials in parts by weight: 40-60 parts of starch, 8-15 parts of cellulose, 15-20 parts of starch fiber gel, 2-4 parts of dispersing agent, 5-8 parts of titanium dioxide, 1-3 parts of resin adhesive, 4-6 parts of chlorinated paraffin, 22-30 parts of diluent, 1-3 parts of urea, 0.5-1.5 parts of plasticizer, 5-8 parts of emulsion, 2-4 parts of thickener and 0.1-0.3 part of defoaming agent. In the invention, because the starch fiber gel material is adopted, on one hand, the fire resistance of the starch fiber at high temperature is realized, the flame spread propagation speed is slowed down, or the combustion can be stopped within a certain time. On the other hand, the problem that the water-based fireproof coating is easy to fall off due to moisture after being sprayed is solved, the problem that the water-based fireproof coating is influenced by seasonal climate is also solved, and meanwhile, the water-based fireproof coating replaces the traditional coating which uses a toxic product as a diluent.
Description
Technical Field
The invention belongs to the technical field of fireproof materials, and particularly relates to an intumescent steel structure fireproof coating as well as a preparation method and application thereof.
Background
The steel is a building material which can not be burnt, has the characteristics of earthquake resistance, bending resistance and the like, and can relatively increase the load capacity of a building and meet the requirement of aesthetic appearance and shape of the building design in practical application; the defects that building materials such as concrete and the like cannot be bent and stretched are also avoided, however, steel used as the building materials has some defects which are difficult to avoid in the aspect of fire prevention, the mechanical properties such as yield point, tensile strength, elastic modulus and the like of the steel are all rapidly reduced due to the rise of temperature, and in order to overcome the defects in the aspect of fire prevention in the practical application of the steel structure materials, fire prevention treatment is required to be carried out, and the surface of the steel is coated with the fire prevention materials.
The common fire prevention mode in the prior art is to carry out the coating fire prevention to the steel construction. At present, the intumescent fire-retardant coating mainly comprises a non-intumescent fire-retardant coating and an intumescent fire-retardant coating, wherein the intumescent fire-retardant coating is in a normal state when not heated and passively expands when heated, so that a steel structure is protected, but the existing intumescent fire-retardant coating gradually cracks after being heated, and the flame-retardant effect is gradually reduced; and the feeding and drying time is slow, and the coating time is long.
Disclosure of Invention
The invention aims to: in order to solve the technical problems in reality, an intumescent steel structure fireproof coating and a preparation method and application thereof are provided.
The technical scheme adopted by the invention is as follows:
the intumescent fire retardant coating for the steel structure is prepared from the following raw materials in parts by weight: 40-60 parts of starch, 8-15 parts of cellulose, 15-20 parts of starch fiber gel, 2-4 parts of dispersing agent, 5-8 parts of titanium dioxide, 1-3 parts of resin adhesive, 4-6 parts of chlorinated paraffin, 22-30 parts of diluent, 1-3 parts of urea, 0.5-1.5 parts of plasticizer, 5-8 parts of emulsion, 2-4 parts of thickener and 0.1-0.3 part of defoaming agent.
Wherein the thickening agent is one or more of cellulose ether, polyvinyl alcohol and glycol.
Wherein the defoaming agent is one or more of polymerized propylene oxide, ethylene oxide, propylene oxide and glycerol.
Wherein the diluent is one or more of methanol, ethanol and 200 solvent oil.
The invention also provides a preparation method of the intumescent steel structure fireproof coating, which comprises the following steps:
a) preparing materials: preparing raw materials according to the components;
b) preparing a suspension: mixing starch fiber gel with emulsion, resin glue, chlorinated paraffin, diluent and plasticizer to obtain starch fiber gel suspension;
c) preparing powder: mixing starch, cellulose, urea and titanium dioxide to obtain a powder mixture;
d) preparing a fireproof coating: mixing and stirring the defoaming agent, the thickening agent, the starch fiber gel suspension in the dispersing agent step b and the powder mixture in the step c uniformly according to the weight formula proportion of the fireproof coating to obtain the intumescent steel structure fireproof coating;
and c, stirring and uniformly mixing the starch fiber gel in the step b with starch, cellulose and deionized water at a ratio of 10:3:1 to obtain gel, and stirring and dispersing the prepared gel into mixed powder.
Wherein, the mixing processing mode in the step c is to uniformly stir and mix by using a horizontal mixer or a high-speed dispersion machine, the stirring speed is 80-100r/pm, and the stirring time is 30-40 min.
The invention provides application of an intumescent fire-retardant coating for a steel structure, and the intumescent fire-retardant coating for the steel structure is used as a framework coating material for fire protection of the steel structure.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
in the invention, because the starch fiber gel material is adopted, on one hand, the fire resistance of the starch fiber at high temperature is realized, the flame spread propagation speed is slowed down, or the combustion can be stopped within a certain time. On the other hand, the problem that the water-based fireproof coating is easy to fall off due to moisture after being sprayed is solved, the problem that the water-based fireproof coating is influenced by seasonal climate is also solved, and meanwhile, the water-based fireproof coating replaces the traditional coating which uses a toxic product as a diluent.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment I provides an intumescent fire retardant coating for a steel structure, which is prepared from the following raw materials in parts by weight: 40-60 parts of starch, 8-15 parts of cellulose, 15-20 parts of starch fiber gel, 2-4 parts of dispersing agent, 5-8 parts of titanium dioxide, 1-3 parts of resin adhesive, 4-6 parts of chlorinated paraffin, 22-30 parts of diluent, 1-3 parts of urea, 0.5-1.5 parts of plasticizer, 5-8 parts of emulsion, 2-4 parts of thickener and 0.1-0.3 part of defoaming agent. The thickener is one or more of cellulose ether, polyvinyl alcohol and glycol. The defoaming agent is one or more of polymerized propylene oxide, ethylene oxide, propylene oxide and glycerin. The diluent is one or more of methanol, ethanol and 200 solvent oil.
The second embodiment is that the preparation method of the intumescent steel structure fireproof coating comprises the following steps:
a) preparing materials: preparing raw materials according to the components;
b) preparing a suspension: mixing starch fiber gel with emulsion, resin glue, chlorinated paraffin, diluent and plasticizer to obtain starch fiber gel suspension;
c) preparing powder: mixing starch, cellulose, urea and titanium dioxide to obtain a powder mixture;
d) preparing a fireproof coating: and (c) mixing and stirring the defoaming agent, the thickening agent, the starch fiber gel suspension in the dispersing agent step b and the powder mixture in the step c uniformly according to the weight formula proportion of the fireproof coating to obtain the intumescent steel structure fireproof coating.
The starch fiber gel in the step b is porous spherical hollow particles, the starch fiber gel is prepared by uniformly stirring starch, cellulose and deionized water at a ratio of 10:3:1 to obtain gel, and then stirring and dispersing the prepared gel into mixed powder; the mixing processing mode in the step c is to use a horizontal mixer or a high-speed dispersion machine to stir and mix uniformly, wherein the stirring speed is 80-100r/pm, and the stirring time is 30-40 min.
Test example in order to test the performance of the expanded steel structure fire-retardant mud (example two) obtained by the present invention, the measurement of each index is performed, the result is shown in table 1, and the comparative measurement of the temperature of the back of the steel plate with or without the coating at the high temperature of 950 ℃ is established, and the result is shown in table 2.
Table 1: the performance of the intumescent steel structure fireproof coating obtained by the invention is tested.
Table 2: the fire resistance of the intumescent steel structure fire-retardant coating obtained by the invention is tested.
| Time/min | Steel plate with fireproof coating/° C | Steel plate without fireproof coating/° C |
| 0 | 0 | 0 |
| 30 | 283 | 850 |
| 60 | 309 | 950 |
| 90 | 374 | 950 |
| 120 | 383 | 950 |
| 150 | 649 | 950 |
| 180 | 950 | 950 |
As can be seen from table 1, each index of the intumescent steel structure fire retardant coating provided in embodiment 2 of the present invention meets the national standard, and some indexes are far better than the national standard, for example, the fire retardant coating has a shorter drying time, which is beneficial to shortening the waiting time of multiple coatings.
As can be seen from table 2, the intumescent steel structure fire retardant coating provided in embodiment 2 of the present invention has a significant fire protection and heat insulation effect, and the effective fire protection and heat insulation effect is maintained within 120 min.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The intumescent fire retardant coating for the steel structure is characterized by comprising the following raw materials in parts by weight: 40-60 parts of starch, 8-15 parts of cellulose, 15-20 parts of starch fiber gel, 2-4 parts of dispersing agent, 5-8 parts of titanium dioxide, 1-3 parts of resin adhesive, 4-6 parts of chlorinated paraffin, 22-30 parts of diluent, 1-3 parts of urea, 0.5-1.5 parts of plasticizer, 5-8 parts of emulsion, 2-4 parts of thickener and 0.1-0.3 part of defoaming agent.
2. An intumescent fire retardant coating for steel structures as claimed in claim 1, characterised in that: the thickening agent is one or more of cellulose ether, polyvinyl alcohol and glycol.
3. An intumescent fire retardant coating for steel structures as claimed in claim 1, characterised in that: the defoaming agent is one or more of polymerized propylene oxide, ethylene oxide, propylene oxide and glycerol.
4. An intumescent fire retardant coating for steel structures as claimed in claim 1, characterised in that: the diluent is one or more of methanol, ethanol and 200# solvent oil.
5. The method for preparing the intumescent fire retardant coating for steel structures as claimed in any of claims 1 to 4, wherein: the method comprises the following steps:
a) preparing materials: preparing raw materials according to the components;
b) preparing a suspension: mixing starch fiber gel with emulsion, resin glue, chlorinated paraffin, diluent and plasticizer to obtain starch fiber gel suspension;
c) preparing powder: mixing starch, cellulose, urea and titanium dioxide to obtain a powder mixture;
d) preparing a fireproof coating: and (c) mixing and stirring the defoaming agent, the thickening agent, the starch fiber gel suspension in the dispersing agent step b and the powder mixture in the step c uniformly according to the weight formula proportion of the fireproof coating to obtain the intumescent steel structure fireproof coating.
6. The method for preparing the intumescent fire retardant coating for steel structures as claimed in claim 5, characterized in that: and b, stirring and uniformly mixing the starch fiber gel in the step b with starch, cellulose and deionized water at a ratio of 10:3:1 to obtain gel, and stirring and dispersing the prepared gel into mixed powder.
7. The method for preparing the intumescent fire retardant coating for steel structures as claimed in claim 5, characterized in that: the mixing processing mode in the step c is to use a horizontal mixer or a high-speed dispersion machine to stir and mix uniformly, wherein the stirring speed is 80-100r/pm, and the stirring time is 30-40 min.
8. The use of an intumescent fire retardant coating for steel structures as claimed in claim 1, wherein: the intumescent fire-retardant coating for the steel structure is used for a framework coating material for fire prevention of the steel structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961440.9A CN112029333A (en) | 2020-09-14 | 2020-09-14 | Intumescent steel structure fireproof coating and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010961440.9A CN112029333A (en) | 2020-09-14 | 2020-09-14 | Intumescent steel structure fireproof coating and preparation method and application thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864099A (en) * | 1958-03-05 | 1961-03-29 | Jaroslav Urbanek | Fire-retardant coating composition |
| CN101125980A (en) * | 2007-09-25 | 2008-02-20 | 公安部四川消防研究所 | Water super-thin steel structure fire-proof paint and preparation method thereof |
| CN104774509A (en) * | 2015-04-22 | 2015-07-15 | 北京碧海舟腐蚀防护工业股份有限公司 | Fireproof paint |
| CN104946025A (en) * | 2015-07-17 | 2015-09-30 | 江苏金基特钢有限公司 | Anti-corrosion property alloy steel coating composition |
| CN107163778A (en) * | 2017-05-24 | 2017-09-15 | 江苏国中防火材料有限公司 | A kind of modified fireproof coating |
| CN111363416A (en) * | 2020-05-21 | 2020-07-03 | 天津市宏越新材料有限公司 | Intumescent steel structure fireproof coating and preparation method and application thereof |
-
2020
- 2020-09-14 CN CN202010961440.9A patent/CN112029333A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864099A (en) * | 1958-03-05 | 1961-03-29 | Jaroslav Urbanek | Fire-retardant coating composition |
| CN101125980A (en) * | 2007-09-25 | 2008-02-20 | 公安部四川消防研究所 | Water super-thin steel structure fire-proof paint and preparation method thereof |
| CN104774509A (en) * | 2015-04-22 | 2015-07-15 | 北京碧海舟腐蚀防护工业股份有限公司 | Fireproof paint |
| CN104946025A (en) * | 2015-07-17 | 2015-09-30 | 江苏金基特钢有限公司 | Anti-corrosion property alloy steel coating composition |
| CN107163778A (en) * | 2017-05-24 | 2017-09-15 | 江苏国中防火材料有限公司 | A kind of modified fireproof coating |
| CN111363416A (en) * | 2020-05-21 | 2020-07-03 | 天津市宏越新材料有限公司 | Intumescent steel structure fireproof coating and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 扈中武等: "膨胀型阻燃涂料的研究进展", 《高分子通报》 * |
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