CN115044232A - Steel structure fireproof coating and preparation method and use method thereof - Google Patents
Steel structure fireproof coating and preparation method and use method thereof Download PDFInfo
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- CN115044232A CN115044232A CN202210720400.4A CN202210720400A CN115044232A CN 115044232 A CN115044232 A CN 115044232A CN 202210720400 A CN202210720400 A CN 202210720400A CN 115044232 A CN115044232 A CN 115044232A
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- expanded perlite
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- bulk material
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- 238000000576 coating method Methods 0.000 title claims abstract description 100
- 239000011248 coating agent Substances 0.000 title claims abstract description 95
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010451 perlite Substances 0.000 claims abstract description 71
- 235000019362 perlite Nutrition 0.000 claims abstract description 71
- 239000013590 bulk material Substances 0.000 claims abstract description 37
- 230000004048 modification Effects 0.000 claims abstract description 37
- 238000012986 modification Methods 0.000 claims abstract description 37
- 239000000853 adhesive Substances 0.000 claims abstract description 35
- 230000001070 adhesive effect Effects 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000945 filler Substances 0.000 claims abstract description 31
- 239000010431 corundum Substances 0.000 claims abstract description 25
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 25
- 239000004576 sand Substances 0.000 claims abstract description 25
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 22
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000077 silane Inorganic materials 0.000 claims abstract description 21
- YQRTZUSEPDULET-UHFFFAOYSA-K magnesium;potassium;phosphate Chemical compound [Mg+2].[K+].[O-]P([O-])([O-])=O YQRTZUSEPDULET-UHFFFAOYSA-K 0.000 claims abstract description 19
- 238000005470 impregnation Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 52
- 239000000843 powder Substances 0.000 claims description 47
- 235000012239 silicon dioxide Nutrition 0.000 claims description 24
- 239000010453 quartz Substances 0.000 claims description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000003365 glass fiber Substances 0.000 claims description 17
- 239000004816 latex Substances 0.000 claims description 17
- 229920000126 latex Polymers 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 17
- 239000003973 paint Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 239000003063 flame retardant Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 9
- 239000006255 coating slurry Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 239000004568 cement Substances 0.000 abstract description 4
- 239000011159 matrix material Substances 0.000 abstract description 4
- 230000007847 structural defect Effects 0.000 abstract description 4
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000001723 curing Methods 0.000 description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 8
- 239000002585 base Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000000395 magnesium oxide Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- -1 iron phosphate compound Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013035 low temperature curing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
-
- 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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Abstract
The invention provides a steel structure fireproof coating, and a preparation method and a use method thereof. The fireproof coating is composed of a potassium magnesium phosphate adhesive, a modification auxiliary agent, a filler and a toughening component; white corundum sand is used as a filler, so that the compressive strength and the fire resistance of the coating can be improved; the bulk material of expanded perlite is used as filler, so that the dry density of the coating can be reduced, and the heat insulation capability of the coating can be improved; the bulk expanded perlite is subjected to surface modification treatment by a silane impregnation liquid, the surface of the bulk expanded perlite subjected to the surface modification treatment is hydrophobic, the barrel pressure strength of the bulk expanded perlite subjected to the modification is increased, the water absorption rate is greatly reduced, and the low water absorption rate of the bulk expanded perlite cannot cause the high cement ratio of the aqueous inorganic fireproof coating slurry and the structural defects of a hardened body which meet the construction consistency requirement; the fireproof coating has the characteristics of normal-temperature curing, controllable curing time, rapid hardening and good volume stability in the hardening process, and has strong adhesive force with a steel matrix, good durability and high fire resistance limit.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a steel structure fireproof coating, and a preparation method and a use method thereof.
Background
In recent decades, the steel yield in China is rapidly increased, the steel structure processing and manufacturing technology is gradually mature, and a premise is provided for steel structure construction. The steel structure has a series of advantages of high strength, light dead weight, good shock resistance, quick installation and construction and the like, is more and more applied to high-rise buildings, large-span structures, light structures and the like, but has the fatal defect of poor fire resistance, and once a fire disaster occurs, the building steel structure which does not adopt the fire protection measures can collapse rapidly. Among various fire protection measures of the building steel structure, the method for coating various fire-proof coatings on the surface is simple, feasible, reliable, economical and practical, and can obviously improve the fire-resistant limit of the steel member.
The steel structure fire-retardant coating can be divided into three types of organic type, inorganic type and organic-inorganic composite type according to the properties of the base materials. The inorganic non-intumescent fire-retardant coating is mainly thick, the thickness of the inorganic non-intumescent fire-retardant coating is changed within the range of 8-50 mm, and a base material is protected by heat insulation materials in the coating to prevent heat transfer when encountering fire; the paint is mostly inorganic water-soluble paint, has higher fire resistance limit, does not generate toxic gas and smoke during combustion, has better long-term erosion resistance of inorganic components to the external environment, and has better environmental friendliness and durability than organic fireproof paint. The binder of the inorganic water-based fireproof coating is a main factor influencing the comprehensive performance of the inorganic water-based fireproof coating, and the currently commonly used binders include silicate series, aluminate series and phosphate series. The silicate series binder has high binding strength, good heat resistance and water resistance, but poor alkali resistance and high curing temperature; the aluminate series is used as the binder, so that the problem that aluminate hydration products are easy to generate crystal form transformation, strength failure in a use state and the like are caused; in contrast, phosphate adhesives have the advantages of good water resistance, low curing shrinkage, high-temperature strength and the like, but still have the problems of low-temperature curing, inconvenient storage, high cost and the like.
The potassium magnesium phosphate adhesive (MKPC) is a phosphate adhesive series prepared from dead-burned magnesium oxide as alkali component, potassium phosphate as acid component and assistant in a certain proportion, and under the acidic condition, phosphate is generated by acid-base chemical reaction and physical action as adhesive phase and is bonded by chemical bond at normal temperature. The rapid hardening and high early strength characteristics of the MKPC can make up the defects of long curing time and maintenance requirement of silicate adhesives, soluble phosphate in the MKPC can be combined with iron elements on the surface of a steel structure to form a compact iron phosphate compound protective layer, so that the corrosion of the surface of the steel structure can be protected, the adhesive force of a coating on the surface of the steel structure can be enhanced, the defects of poor adhesive force and easy stripping of an inorganic thick coating and a base layer can be overcome, the constant-temperature curing characteristic of the MKPC is superior to other phosphate adhesives, dead-burned magnesia powder serving as a main raw material of the MKPC is a refractory material, and a hardened body of the MKPC has better fireproof and high-temperature resistant performances. However, the MKPC-based material is very sensitive to the water-to-gel ratio, and if the water-to-gel ratio is too large, the MKPC-based material slurry is easy to be layered and isolated, so that a network structure cannot be formed between a gelling hydration product and unreacted magnesium oxide particles in time, and the surface expansion and the strength attenuation of a hardened body are caused. The expanded perlite is in a honeycomb structure, has the characteristics of stable chemical property, low heat conductivity coefficient and the like, is an ideal heat insulation material, and can be used as a light filler of a fireproof coating. But the expanded perlite molecules are easy to polarize to hydrogen bonds and have hydrophilic characteristics, and the water absorption rate is high due to the porosity and the hydrophilicity. In the process of mixing, stirring and pulping with inorganic adhesive powder, the high water absorption of the expanded perlite can cause the high water-cement ratio of the aqueous inorganic fireproof coating slurry meeting the construction consistency requirement and the structural defects of a hardened body.
Based on the problems of the prior steel structure fireproof coating, the improvement is needed.
Disclosure of Invention
In view of the above, the present invention provides a fireproof coating for steel structure, a preparation method and a use method thereof, so as to solve the above problems or at least partially solve the above problems.
In a first aspect, the invention provides a steel structure fireproof coating, which comprises the following raw materials in parts by weight: 58-70 parts of a potassium magnesium phosphate adhesive, 3-7 parts of a modification auxiliary agent, 30-40 parts of a filler and 0.5-1 part of a toughening component;
the filler comprises the following components in percentage by mass: 70-75% of white corundum sand and 25-30% of expanded perlite bulk material subjected to surface modification treatment;
the preparation method of the bulk material of the expanded perlite subjected to surface modification treatment comprises the following steps:
adding isobutyl triethoxysilane into water to prepare a silane impregnation liquid;
and spraying the silane impregnation liquid on the surface of the expanded perlite bulk material, standing and drying to obtain the surface modified expanded perlite bulk material.
Preferably, the steel structure fireproof coating comprises a modification auxiliary agent composed of quartz powder, titanium dioxide and an air entraining agent, wherein the mass ratio of the quartz powder to the titanium dioxide to the air entraining agent is (85-90): (5-10): (2.5-5).
Preferably, the toughening component of the steel structure fireproof coating consists of redispersible latex powder and glass fibers, and the mass ratio of the redispersible latex powder to the glass fibers is (45-55): (45-55).
Preferably, the steel structure fireproof coating comprises 95-99% of silica by mass in quartz powder, and the particle size of the quartz powder is 70-160 μm.
Preferably, the mass concentration of the silane impregnating solution in the steel structure fireproof coating is 8-12%.
Preferably, the steel structure fireproof coating is prepared by spraying silane impregnation liquid on the surface of expanded perlite bulk materials, standing, and drying at 50-70 ℃ for 45-55 h, wherein the standing time is 10-15 h;
the mass ratio of the silane impregnation liquid to the bulk expanded perlite is (3-5): 1.
Preferably, the steel structure fireproof paint is prepared by mixing SiO in the bulk material of the expanded perlite 2 70-75% by mass of Al 2 O 3 The mass content of (A) is 11-14%; the ignition loss of the expanded perlite bulk material is not more than 4%; the particle size of the expanded perlite bulk material is 1-3mm, and the bulk density is less than or equal to 100kg/m 3 And the thermal conductivity coefficient is less than or equal to 0.056W/(m.K).
Preferably, the steel structure fireproof coating has the advantages that the pH value of the dispersible emulsion powder is 5-7, the average particle size is 60-100 mu m, and the viscosity is 0.5-2 mPa.s;
the diameter of the glass fiber is 18-32 mu m, and the length of the glass fiber is 3-6 mm.
In a second aspect, the invention also provides a preparation method of the steel structure fireproof coating, which comprises the following steps:
mixing a potassium magnesium phosphate adhesive, a modification auxiliary agent, white corundum sand and a toughening component at the temperature of 10-30 ℃ and the relative humidity of 40-70% to obtain a mixture;
and adding water into the mixture, stirring, adding the surface modified expanded perlite bulk material, stirring and adding water again to obtain the steel structure fireproof coating.
In a third aspect, the invention further provides a use method of the steel structure fireproof paint or the steel structure fireproof paint prepared by the preparation method, and the use method comprises the following steps:
coating the steel structure fireproof paint on the surface of a base material to reach a specified thickness and forming a fireproof coating; wherein the thickness of each coating is 3-5 mm, the interval between every two coatings is 1-3 h, and the coating is carried out for multiple times until the specified thickness is reached.
Compared with the prior art, the steel structure fireproof coating and the preparation method thereof have the following beneficial effects:
1. the steel structure fireproof coating disclosed by the invention is composed of a potassium magnesium phosphate adhesive (MKPC), a modification auxiliary agent, a filler and a toughening component, wherein the filler is composed of white corundum sand and surface-modified expanded perlite bulk materials; white corundum sand is used as a filler, so that the compressive strength and the fire resistance of the coating can be improved; the bulk material of expanded perlite is used as filler, so that the dry density of the coating can be reduced, and the heat insulation capability of the coating can be improved; further, the surface of the expanded perlite bulk material is modified by silane impregnation liquid, the surface of the expanded perlite bulk material subjected to surface modification is hydrophobic, the barrel pressure strength of the modified expanded perlite bulk material is increased, and the water absorption rate is greatly reduced, so that the low water absorption rate of the expanded perlite can not cause the high cement ratio of the aqueous inorganic fireproof coating slurry meeting the construction consistency requirement and the structural defects of a hardened body in the process of mixing, stirring and pulping with the potassium-magnesium phosphate adhesive powder; the steel structure fireproof coating has the characteristics of normal-temperature curing, controllable curing time, rapid hardening and good volume stability in the hardening process, and has strong adhesive force with a steel matrix, good durability and high fire resistance limit;
2. according to the steel structure fireproof coating, the quartz powder and the air entraining agent are used as the rib agent, so that the particle grading of the powder can be adjusted, the water retention property and the thixotropy of the coating are improved, and the dry density and the heat conductivity coefficient of the coating are reduced; the toughening component consists of redispersible latex powder and glass fiber, and by doping a proper amount of redispersible latex powder and random short glass fiber, the brittleness and crack resistance of the coating can be improved, and the toughness of a hardened body of the coating is increased;
3. the preparation method of the steel structure fireproof coating has simple preparation process, can be constructed at normal temperature, can ensure good workability within 20-60min, and can conveniently paint and secondarily repair steel facilities on a construction site. The working performance of the coating slurry is good, the surface drying time is short, and the construction efficiency can be greatly improved; no toxic and harmful gas is generated to pollute the environment in the production, construction and combustion processes. After construction, the coating can be cured automatically in normal atmospheric environment, so that special curing equipment and heating process are not needed, the adhesion of the coating and a steel matrix is strong, and the fire resistance is high.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the application provides a steel structure fireproof coating, which comprises the following raw materials in parts by weight: 58-70 parts of a potassium magnesium phosphate adhesive, 3-7 parts of a modification auxiliary agent, 30-40 parts of a filler and 0.5-1 part of a toughening component;
the filler comprises the following components in percentage by mass: 70-75% of white corundum sand and 25-30% of expanded perlite bulk material subjected to surface modification treatment;
the preparation method of the bulk material of the expanded perlite subjected to surface modification treatment comprises the following steps:
adding isobutyl triethoxysilane into water to prepare a silane impregnation liquid;
and spraying the silane impregnation liquid on the surface of the expanded perlite bulk material, standing and drying to obtain the surface modified expanded perlite bulk material.
The steel structure fireproof coating consists of a potassium magnesium phosphate adhesive (MKPC), a modification auxiliary agent, a filler and a toughening component, wherein the filler consists of white corundum sand and surface-modified expanded perlite bulk materials; white corundum sand is used as a filler, so that the compressive strength and the fire resistance of the coating can be improved; the bulk material of expanded perlite is used as filler, so that the dry density of the coating can be reduced, and the heat insulation capability of the coating can be improved; further, the surface of the expanded perlite bulk material is modified by silane impregnation liquid, the surface of the expanded perlite bulk material subjected to surface modification is hydrophobic, the barrel pressure strength of the modified expanded perlite bulk material is increased, and the water absorption rate is greatly reduced, so that the low water absorption rate of the expanded perlite can not cause the high cement ratio of the aqueous inorganic fireproof coating slurry meeting the construction consistency requirement and the structural defects of a hardened body in the process of mixing, stirring and pulping with the potassium-magnesium phosphate adhesive powder; the steel structure fireproof coating has the characteristics of normal temperature curing, controllable curing time, rapid hardening and good volume stability in the hardening process, and has strong adhesive force with a steel substrate, good durability and high fire resistance limit.
In some embodiments, the modification auxiliary agent consists of quartz powder, titanium dioxide and an air entraining agent, and the mass ratio of the quartz powder to the titanium dioxide to the air entraining agent is (85-90) to (5-10) to (2.5-5).
By adopting quartz powder and air entraining agent as the rib agent, the grain composition of the powder can be adjusted, the water retention and thixotropy of the coating can be improved, and the dry density and the heat conductivity coefficient of the coating can be reduced.
In some embodiments, the toughening component consists of a redispersible latex powder and glass fibers in a mass ratio of (45-55) to (45-55).
By adding a proper amount of redispersible latex powder and random chopped glass fibers, the brittleness and crack resistance of the coating can be improved, and the toughness of a hardened body of the coating is increased.
In some embodiments, the mass content of silicon dioxide in the quartz powder is 95-99%, and the particle size of the quartz powder is 70-160 μm.
In some embodiments, the silane impregnating solution has a mass concentration of 8-12%.
In some embodiments, the silane impregnation liquid is sprayed on the surface of the bulk expanded perlite, and after standing, in the drying step, the standing time is 10-15 hours, the drying temperature is 50-70 ℃, and the drying time is 45-55 hours;
the mass ratio of the silane impregnation liquid to the bulk expanded perlite is (3-5): 1.
In some embodiments, the SiO in the bulk of the expanded perlite 2 70-75% by mass of Al 2 O 3 The mass content of (A) is 11-14%; the ignition loss of the expanded perlite bulk material is not more than 4%; the expanded perlite powderThe grain diameter of the material is 1-3mm, and the bulk density is less than or equal to 100kg/m 3 And the thermal conductivity coefficient is less than or equal to 0.056W/(m.K).
In some embodiments, the dispersible latex powder has a pH of 5 to 7, an average particle size of 60 to 100 μm, and a viscosity of 0.5 to 2 mPa.s;
the diameter of the glass fiber is 18-32 μm, and the length of the glass fiber is 3-6 mm.
Based on the same inventive concept, the embodiment of the application also provides a preparation method of the steel structure fireproof coating, which comprises the following steps:
s1, mixing the potassium magnesium phosphate adhesive, the modification auxiliary agent, the white corundum sand and the toughening component at the temperature of 10-30 ℃ and the relative humidity of 40-70% to obtain a mixture;
and S2, adding water into the mixture, stirring, adding the surface-modified expanded perlite bulk material, stirring and adding water again to obtain the steel structure fireproof coating.
The preparation method of the steel structure fireproof coating is simple in preparation process, construction can be carried out at normal temperature, the steel structure fireproof coating can ensure good workability within 20-60min, and steel facilities can be conveniently smeared and secondarily repaired on a construction site. The working performance of the coating slurry is good, the surface drying time is short, and the construction efficiency can be greatly improved; no toxic and harmful gas is generated to pollute the environment in the production, construction and combustion processes. After construction, the coating can be cured automatically in normal atmospheric environment, so that special curing equipment and heating process are not needed, the adhesion of the coating and a steel matrix is strong, and the fire resistance is high.
Based on the same inventive concept, the embodiment of the application also provides a using method of the steel structure fireproof paint or the steel structure fireproof paint prepared by the preparation method, and the using method comprises the following steps:
coating the steel structure fireproof paint on the surface of a base material to reach a specified thickness and forming a fireproof coating; wherein the thickness of each coating is 3-5 mm, the interval between every two coatings is 1-3 h, and the coating is carried out for multiple times until the specified thickness (less than or equal to 20mm) is achieved.
The steel structure fire retardant coating of the present application is further described below in specific examples. This section further illustrates the present invention with reference to specific examples, which should not be construed as limiting the invention. The technical means employed in the examples are conventional means well known to those skilled in the art, unless otherwise specified. Reagents, methods and apparatus employed in the present invention are conventional in the art unless otherwise indicated. In the following examples, the air-entraining agent was purchased from Guangxing Biotechnology Ltd, Zhengzhou, and the redispersible latex powder was purchased from Chonghao chemical Ltd. Example 1
The embodiment provides a preparation method of a surface-modified expanded perlite bulk material, which comprises the following steps:
s1, adding isobutyl triethoxysilane into water to prepare a silane impregnation liquid with the mass concentration of 10%;
s2, spraying the silane impregnation liquid on the surface of the bulk expanded perlite, standing for 12 hours, and then drying for 48 hours at 60 ℃ to obtain the bulk expanded perlite subjected to surface modification treatment, wherein the mass ratio of the silane impregnation liquid to the bulk expanded perlite is 4: 1.
The results of testing the bulk material under the expanded perlite before and after surface modification for the cylinder strength, water absorption and thermal conductivity according to the above methods are shown in table 1 below.
TABLE 1 bulk Properties under expanded perlite before and after surface modification
The MKPC-based fireproof coating slurry is prepared from a potassium magnesium phosphate adhesive, a filler (white corundum sand and expanded perlite), a modification auxiliary agent (quartz powder) and a proper amount of water, and part of physical and mechanical properties of the MKPC-based fireproof coating slurry are shown in Table 2. Wherein the MKPC adhesive is prepared from dead-burned magnesia powder (MgO with mass fraction not less than 90% and specific surface area of 2.0-2.4 m) 2 Kg), monopotassium phosphate (technical grade, main particle size 40/350-60/245 mesh/mum) and retarder, wherein the filler is white corundum sand and expanded perlite bulk material (produced by thick general mining material factories, the particle size is 1-3mm, and the filler is unmodified and modified according to the method in example 1And the other two). Wherein M00 has no filler, and the mixing ratio is MKPC adhesive: quartz powder: water 84: 6: 10 (mass ratio); all the fillers in M01 are white corundum sand, and the mixing ratio is MKPC adhesive: quartz powder: white corundum sand: water 49: 4: 40: 7 (mass ratio); the M02 medium filler is composed of white corundum sand and unmodified expanded perlite bulk materials, and the mixing ratio is MKPC adhesive: quartz powder: white corundum sand: expanded perlite: 46 parts of water: 3: 34: 4: 13 (mass ratio); the M03 medium filler is composed of white corundum sand and surface modified expanded perlite bulk materials, and the mixing ratio is MKPC adhesive: quartz powder: white corundum sand: expanded perlite: water 48: 4: 4: 35: 9 (mass ratio). The properties of the above formulated MKPC based fire retardant coating slurry are shown in table 2 below.
TABLE 2 Properties of MKPC-based fireproofing slurries
The fluidity test refers to GB/T2419-2005 'cement mortar fluidity test method', the strength test refers to JGJ/T70-2009 'building mortar basic performance test method', and GB14907-2018 'steel structure fireproof coating' fireproof performance test method to test the time that the combustion temperature of the MKPC-based coating test piece reaches 300 ℃.
Example 2
The embodiment of the application provides a steel structure fireproof coating, which comprises the following raw materials in parts by weight: 60 parts of a potassium magnesium phosphate adhesive, 4 parts of a modification auxiliary agent, 31 parts of a filler and 1 part of a toughening component;
the modifying auxiliary agent comprises quartz powder, titanium dioxide and an air entraining agent in a mass ratio of 10:1: 0.3;
the filler consists of white corundum sand and surface-modified expanded perlite bulk materials in a mass ratio of 80: 20;
the toughening component consists of redispersible latex powder and glass fiber in a mass ratio of 50: 50;
wherein the dispersible latex powder has a pH value of 5-7, an average particle size of 60-100 μm, and a viscosity of 0.5-2 mPa.s;
the bulk expanded perlite subjected to surface modification treatment was prepared by the method of example 1.
The preparation method of the steel structure fireproof coating comprises the following steps:
the method comprises the following steps of:
s1, mixing the modification auxiliary agent, the white corundum sand, the toughening component and the potassium magnesium phosphate adhesive to obtain a mixture;
s2, adding 70 parts by weight of water into the mixture obtained in the step S1, uniformly stirring, then adding the surface-modified expanded perlite bulk material, and adding 30 parts by weight of water while stirring until uniformly stirring to obtain the steel structure fireproof coating.
Example 3
The embodiment of the application provides a steel structure fireproof coating, which comprises the following raw materials in parts by weight: 58 parts of magnesium potassium phosphate adhesive, 4.5 parts of modification auxiliary agent, 37 parts of filler and 0.5 part of toughening component;
the modifying auxiliary agent comprises quartz powder, titanium dioxide and an air entraining agent in a mass ratio of 10:1: 0.3;
the filler consists of white corundum sand and surface-modified expanded perlite bulk materials in a mass ratio of 72: 28;
the toughening component consists of redispersible latex powder and glass fiber in a mass ratio of 50: 50;
wherein the dispersible latex powder has a pH value of 5-7, an average particle size of 60-100 μm, and a viscosity of 0.5-2 mPa.s;
the bulk expanded perlite subjected to surface modification treatment was prepared by the method of example 1.
The preparation method of the steel structure fireproof coating comprises the following steps:
the method comprises the following steps of:
s1, mixing the modification auxiliary agent, the white corundum sand, the toughening component and the potassium magnesium phosphate adhesive to obtain a mixture;
s2, adding 70 parts by weight of water into the mixture obtained in the step S1, uniformly stirring, then adding the surface-modified expanded perlite bulk material, and adding 30 parts by weight of water while stirring until uniformly stirring to obtain the steel structure fireproof coating.
Example 4
The embodiment of the application provides a steel structure fireproof coating, which comprises the following raw materials in parts by weight: 56 parts of magnesium potassium phosphate adhesive, 4 parts of modification auxiliary agent, 39 parts of filler and 1 part of toughening component;
the modifying auxiliary agent comprises quartz powder, titanium dioxide and an air entraining agent in a mass ratio of 14:1: 0.3;
the filler consists of white corundum sand and surface-modified expanded perlite bulk materials in a mass ratio of 75: 25;
the toughening component consists of redispersible latex powder and glass fiber in a mass ratio of 50: 50;
wherein the dispersible latex powder has a pH value of 5-7, an average particle size of 60-100 μm, and a viscosity of 0.5-2 mPa.s;
the bulk expanded perlite subjected to surface modification treatment was prepared by the method of example 1.
The preparation method of the steel structure fireproof coating comprises the following steps:
the method comprises the following steps of:
s1, mixing the modification auxiliary agent, the white corundum sand, the toughening component and the potassium magnesium phosphate adhesive to obtain a mixture;
s2, adding 70 parts by weight of water into the mixture obtained in the step S1, uniformly stirring, then adding the surface-modified expanded perlite bulk material, and adding 30 parts by weight of water while stirring until uniformly stirring to obtain the steel structure fireproof coating.
Various test pieces are prepared according to GB14907-2018 Steel structure fireproof paint, and the basic performance of the steel structure fireproof paint prepared in the embodiments 2-4 is tested, and the results are shown in Table 3.
TABLE 3-Properties of the Steel Structure fire-retardant coating in examples 2 to 4
As can be seen from the above Table 1, the steel structure fireproof coating prepared by the method has good fireproof performance, bonding strength and compressive strength.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The steel structure fireproof coating is characterized by comprising the following raw materials in parts by weight: 58-70 parts of a potassium magnesium phosphate adhesive, 3-7 parts of a modification auxiliary agent, 30-40 parts of a filler and 0.5-1 part of a toughening component;
the filler comprises the following components in percentage by mass: 70-75% of white corundum sand and 25-30% of expanded perlite bulk material subjected to surface modification treatment;
the preparation method of the bulk material of the expanded perlite subjected to surface modification treatment comprises the following steps:
adding isobutyl triethoxysilane into water to prepare a silane impregnation liquid;
and spraying the silane impregnation liquid on the surface of the expanded perlite bulk material, standing and drying to obtain the surface modified expanded perlite bulk material.
2. The steel structure fireproof coating of claim 1, wherein the modification auxiliary agent comprises quartz powder, titanium dioxide and an air entraining agent, and the mass ratio of the quartz powder, the titanium dioxide and the air entraining agent is (85-90): (5-10): (2.5-5).
3. The fireproof coating for steel structures of claim 1, wherein the toughening component comprises redispersible latex powder and glass fiber, and the mass ratio of the redispersible latex powder to the glass fiber is (45-55) to (45-55).
4. The fireproof coating for a steel structure according to claim 2, wherein the mass content of silicon dioxide in the quartz powder is 95-99%, and the particle size of the quartz powder is 70-160 μm.
5. The steel structure fireproof coating of claim 1, wherein the silane impregnating solution has a mass concentration of 8-12%.
6. The fireproof coating for a steel structure as claimed in claim 1, wherein silane impregnation liquid is sprayed on the surface of the bulk expanded perlite, and after standing, in the drying step, the standing time is 10-15 h, the drying temperature is 50-70 ℃, and the drying time is 45-55 h;
the mass ratio of the silane impregnation liquid to the bulk expanded perlite is (3-5): 1.
7. The fire retardant coating for steel structure of claim 1, wherein SiO is contained in the bulk material of expanded perlite 2 70-75% by mass of Al 2 O 3 The mass content of (A) is 11-14%; the ignition loss of the expanded perlite bulk material is not more than 4%; the particle size of the expanded perlite bulk material is 1-3mm, and the bulk density is less than or equal to 100kg/m 3 And the thermal conductivity coefficient is less than or equal to 0.056W/(m.K).
8. The fireproof paint for steel structures according to claim 3, wherein the dispersible latex powder has a pH value of 5 to 7, an average particle size of 60 to 100 μm, and a viscosity of 0.5 to 2 mPa.s;
the diameter of the glass fiber is 18-32 mu m, and the length of the glass fiber is 3-6 mm.
9. The preparation method of the steel structure fireproof coating as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
mixing a potassium magnesium phosphate adhesive, a modification auxiliary agent, white corundum sand and a toughening component at the temperature of 10-30 ℃ and the relative humidity of 40-70% to obtain a mixture;
and adding water into the mixture, stirring, adding the surface modified expanded perlite bulk material, stirring and adding water again to obtain the steel structure fireproof coating.
10. A use method of the steel structure fireproof paint as claimed in any one of claims 1 to 8 or the steel structure fireproof paint prepared by the preparation method as claimed in claim 9 comprises the following steps:
coating the steel structure fireproof paint on the surface of a base material to reach a specified thickness and forming a fireproof coating; wherein the thickness of each coating is 3-5 mm, the interval between every two coatings is 1-3 h, and the coating is carried out for multiple times until the specified thickness is reached.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115975422A (en) * | 2022-10-20 | 2023-04-18 | 中建八局第三建设有限公司 | Anticorrosion and fireproof integrated coating and application thereof |
Citations (6)
| 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 |
| US20110143910A1 (en) * | 2009-12-11 | 2011-06-16 | Latitude 18, Inc. | Inorganic phosphate compositions and methods |
| CN106186854A (en) * | 2016-04-28 | 2016-12-07 | 中晶工程材料（信阳）有限公司 | A kind of fire-type modified expanded perlite insulation board and production method thereof |
| CN106497157A (en) * | 2016-10-18 | 2017-03-15 | 盐城工学院 | Potassium magnesium phosphate cement base fire-resistant coating for steel structure and preparation method thereof, using method |
| CN107760076A (en) * | 2017-10-23 | 2018-03-06 | 河南耐泰防火科技有限公司 | A kind of low cigarette environment-friendlyfireproof fireproof coating and preparation method thereof |
| CN111171657A (en) * | 2020-02-11 | 2020-05-19 | 荆门市诺维英新材料科技有限公司 | Energy-saving environment-friendly fireproof coating and preparation method thereof |
-
2022
- 2022-06-23 CN CN202210720400.4A patent/CN115044232A/en active Pending
Patent Citations (6)
| 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 |
| US20110143910A1 (en) * | 2009-12-11 | 2011-06-16 | Latitude 18, Inc. | Inorganic phosphate compositions and methods |
| CN106186854A (en) * | 2016-04-28 | 2016-12-07 | 中晶工程材料（信阳）有限公司 | A kind of fire-type modified expanded perlite insulation board and production method thereof |
| CN106497157A (en) * | 2016-10-18 | 2017-03-15 | 盐城工学院 | Potassium magnesium phosphate cement base fire-resistant coating for steel structure and preparation method thereof, using method |
| CN107760076A (en) * | 2017-10-23 | 2018-03-06 | 河南耐泰防火科技有限公司 | A kind of low cigarette environment-friendlyfireproof fireproof coating and preparation method thereof |
| CN111171657A (en) * | 2020-02-11 | 2020-05-19 | 荆门市诺维英新材料科技有限公司 | Energy-saving environment-friendly fireproof coating and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 温婧: "MKPC基钢结构防火涂料组成结构设计及其防火性能评价", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 温婧等: "磷酸钾镁胶结剂基钢结构防火涂料研究进展", 《盐城工学院学报(自然科学版)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115975422A (en) * | 2022-10-20 | 2023-04-18 | 中建八局第三建设有限公司 | Anticorrosion and fireproof integrated coating and application thereof |
| CN115975422B (en) * | 2022-10-20 | 2023-09-29 | 中建八局第三建设有限公司 | Corrosion-resistant fireproof integrated coating and application thereof |
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Application publication date: 20220913 |