CN115352137A - Fireproof assembly for steel structure and preparation process and application thereof - Google Patents
Fireproof assembly for steel structure and preparation process and application thereof Download PDFInfo
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- CN115352137A CN115352137A CN202211008176.2A CN202211008176A CN115352137A CN 115352137 A CN115352137 A CN 115352137A CN 202211008176 A CN202211008176 A CN 202211008176A CN 115352137 A CN115352137 A CN 115352137A
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- Prior art keywords
- fireproof
- steel structure
- fiber
- fire
- layer
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 120
- 239000010959 steel Substances 0.000 title claims abstract description 120
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 102
- 238000005336 cracking Methods 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 239000011819 refractory material Substances 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000011230 binding agent Substances 0.000 claims abstract description 27
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims abstract description 12
- -1 organic acid iron salt Chemical class 0.000 claims abstract description 11
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims abstract description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 6
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 43
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 15
- 238000011049 filling Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 10
- 229920002748 Basalt fiber Polymers 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 9
- 239000000378 calcium silicate Substances 0.000 claims description 8
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 8
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 8
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 8
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- NPFOYSMITVOQOS-UHFFFAOYSA-K iron(III) citrate Chemical compound [Fe+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NPFOYSMITVOQOS-UHFFFAOYSA-K 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- OHZCFWMJMWFNFP-UHFFFAOYSA-L ferrous tartrate Chemical compound [Fe+2].[O-]C(=O)C(O)C(O)C([O-])=O OHZCFWMJMWFNFP-UHFFFAOYSA-L 0.000 claims description 3
- ZJBMGHSHQUAKKI-UHFFFAOYSA-L iron(2+);phthalate Chemical compound [Fe+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O ZJBMGHSHQUAKKI-UHFFFAOYSA-L 0.000 claims description 3
- 238000004079 fireproofing Methods 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 11
- 230000002265 prevention Effects 0.000 abstract description 9
- 239000003063 flame retardant Substances 0.000 description 34
- 230000000052 comparative effect Effects 0.000 description 32
- 239000011248 coating agent Substances 0.000 description 20
- 238000000576 coating method Methods 0.000 description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 13
- 238000009413 insulation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 235000019353 potassium silicate Nutrition 0.000 description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- MDXRFOWKIZPNTA-UHFFFAOYSA-L butanedioate;iron(2+) Chemical compound [Fe+2].[O-]C(=O)CCC([O-])=O MDXRFOWKIZPNTA-UHFFFAOYSA-L 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 5
- 238000010030 laminating Methods 0.000 description 5
- 238000009941 weaving Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229960001604 ferrous succinate Drugs 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 239000010963 304 stainless steel Substances 0.000 description 2
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical class [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 2
- LBZRRXXISSKCHV-UHFFFAOYSA-N [B].[O] Chemical group [B].[O] LBZRRXXISSKCHV-UHFFFAOYSA-N 0.000 description 2
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000005007 epoxy-phenolic resin Substances 0.000 description 2
- 229960002413 ferric citrate Drugs 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- GJPYYNMJTJNYTO-UHFFFAOYSA-J sodium aluminium sulfate Chemical compound [Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GJPYYNMJTJNYTO-UHFFFAOYSA-J 0.000 description 2
- SFOKDWPZOYRZFF-UHFFFAOYSA-H 2,3-dihydroxybutanedioate;iron(3+) Chemical compound [Fe+3].[Fe+3].[O-]C(=O)C(O)C(O)C([O-])=O.[O-]C(=O)C(O)C(O)C([O-])=O.[O-]C(=O)C(O)C(O)C([O-])=O SFOKDWPZOYRZFF-UHFFFAOYSA-H 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-M 4-hydroxybenzoate Chemical compound OC1=CC=C(C([O-])=O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-M 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- CHYQSXLXQCXPAA-UHFFFAOYSA-H butanedioate;iron(3+) Chemical compound [Fe+3].[Fe+3].[O-]C(=O)CCC([O-])=O.[O-]C(=O)CCC([O-])=O.[O-]C(=O)CCC([O-])=O CHYQSXLXQCXPAA-UHFFFAOYSA-H 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Building Environments (AREA)
Abstract
The application relates to the technical field of steel structure fire prevention, and particularly discloses a fire-proof assembly for a steel structure and a preparation process and application thereof. A fire protection assembly for a steel structure comprises a fire protection layer; the fireproof layer is mainly prepared from the following raw materials in parts by weight: 50-80 parts of fiber, 0-200 parts of refractory material, 0-35 parts of anti-cracking agent, 30-50 parts of binder and 20-35 parts of water; the refractory material is at least one of bauxite, mullite, magnesium oxide, aluminum oxide and coal gangue; the anti-cracking agent consists of diboron trioxide, aluminum phosphate and organic acid iron salt according to the molar ratio of (38-50) to (12-18) to (20-25). The utility model provides a fire prevention subassembly for steel construction can be used to steel construction building body, and it has the advantage that fire resistance is good.
Description
Technical Field
The application relates to the technical field of steel structure fire prevention, in particular to a fire-proof assembly for a steel structure and a preparation process and application thereof.
Background
Compared with the traditional concrete building, the steel structure building has higher strength and better shock resistance. And because the steel component can be made in a factory and installed on site, the construction period can be greatly shortened. And because the steel component can also be recycled, the production amount of construction waste can be greatly reduced, and the steel component is more green and environment-friendly, so that the steel component is more and more applied to industrial buildings and civil buildings.
In the construction process of the steel structure building, the fireproof performance needs to be considered besides the parameters such as the bearing performance, the earthquake resistance and the like. Although the steel structure belongs to incombustible materials, the fire resistance is poor, the performance of the materials is basically unchanged below 200 ℃, but when the temperature is over 200 ℃, the performance of the materials starts to be obviously reduced, and when the temperature exceeds 450 ℃, the steel structure loses the bearing capacity and is greatly deformed, bent or even collapsed, so that huge casualties and property loss are caused.
Generally, the fire endurance of the steel structure without protection is only about 15min, so that the fire-proof treatment of the steel structure is very important. The application publication No. CN105712685A discloses a steel structure fireproof coating, which is composed of the following raw materials in parts by weight: 325-400 parts of cement, 100-150 parts of gypsum powder, 40-80 parts of bentonite, 100-150 parts of heavy calcium carbonate powder, 30-50 parts of high-temperature aluminum silicate fiber and 400-500 parts of water, and when the fireproof coating is used, the fireproof coating is coated on the outer surface of a steel structure to play a corresponding fireproof role.
Aiming at the steel structure fireproof coating, the raw materials contain more gypsum powder and heavy calcium carbonate, the components are easy to crack after being burned by high-temperature flame for a long time, and heat is easy to transfer inwards along the cracks to reduce the heat insulation performance.
Disclosure of Invention
In order to improve the problems that a fireproof material is easy to crack and the heat insulation effect is reduced under a long-time high-temperature environment, the application provides a fireproof assembly for a steel structure and a preparation process and application thereof.
First aspect is fire prevention subassembly for steel construction, the application provides a fire prevention subassembly for steel construction, adopts following technical scheme:
a fire protection assembly for a steel structure comprises a fire protection layer; the fireproof layer is mainly prepared from the following raw materials in parts by weight:
fiber: 50-80 parts;
refractory materials: 0-200 parts of a solvent;
anti-cracking agent: 0-35 parts;
adhesive: 30-50 parts;
water: 20-35 parts;
the refractory material is at least one of bauxite, mullite, magnesium oxide, aluminum oxide and coal gangue; the anti-cracking agent consists of diboron trioxide, aluminum phosphate and organic acid iron salt according to the molar ratio of (38-50) to (12-18) to (20-25).
Further preferably, the fireproof assembly for the steel structure comprises an outer layer, a fireproof layer and an inner layer which are sequentially stacked and fixed together; the fireproof layer is mainly prepared from the following raw materials in parts by weight:
fiber: 50-80 parts;
refractory materials: 100-200 parts;
anti-cracking agent: 20-35 parts;
adhesive: 30-50 parts;
water: 20-35 parts;
the refractory material is at least one of bauxite, mullite, magnesium oxide, aluminum oxide and coal gangue; the anti-cracking agent consists of diboron trioxide, aluminum phosphate and organic acid iron salt according to the molar ratio of (38-50) to (12-18) to (20-25).
Through adopting above-mentioned technical scheme, adopt skin, flame retardant coating and interior layer upon layer to fold the setting, at the initial stage of passing a fire, the skin can reflect most thermal radiation as the heat reflection stratum to certain basic reflectance can still be guaranteed after passing a fire for a long time. The inner layer can block heat from being transferred to the steel structure, and can also play a good supporting role, so that the binding force between the fireproof assembly and the steel structure installation base body is better. And the fireproof layer is used as a filling layer, and bauxite, mullite, magnesium oxide, aluminum oxide and coal gangue in the fireproof material have very low heat conductivity and high fireproof performance, so that most of heat can be isolated, and the heat is reduced from being transferred to the inner layer. In addition, when heat penetrates through the outer layer and is transferred to the fireproof layer, the fireproof material can bear a very strong roasting effect, boron trioxide molecules in the anti-cracking agent can be converted into an angular oxygen-boron structure at high temperature, the oxygen-boron structure has very strong polarity and can be dispersed in the fireproof material to play a very good bonding effect, meanwhile, organic acid iron salt is decomposed and oxidized under the high-temperature condition and the promoting effect of the boron trioxide and is combined with aluminum phosphate to form an expanded iron-aluminum complex compound, a cellular and spongy microporous structure is formed in the fireproof layer, and the heat insulation performance of the fireproof layer is greatly improved. In addition, the pore structures can disperse shrinkage stress generated when the refractory material is roasted in time, and reduce the probability of shrinkage cracks of the fireproof layer, so that the fireproof layer can resist high-temperature roasting for a long time without cracking, the fireproof time is longer, and the heat insulation effect is better.
Preferably, the organic acid iron salt is at least one of tartaric acid iron salt, phthalic acid iron salt and citric acid iron salt.
By adopting the technical scheme, the variety and the composition of the organic acid iron salt are optimized and adjusted, the tartaric acid iron salt, the phthalic acid iron salt and the citric acid iron salt have higher reaction activity, the generation rate of the iron-aluminum complex compound is adjusted, the form of a micropore structure in the fireproof layer is improved, the structural stability of the fireproof layer is improved, and the cracking condition is reduced.
Preferably, the fiber is one or more of basalt fiber, glass fiber, high silica fiber, rock wool fiber, calcium silicate fiber and ceramic fiber.
By adopting the technical scheme, the types and the proportions of the fibers are tested and screened, and the basalt fibers, the glass fibers, the high silica fibers, the rock wool fibers, the calcium silicate fibers and the ceramic fibers have better fire resistance and mechanical properties, are dispersed and embedded in the fireproof layer to play a role in supporting a framework, can disperse shrinkage stress when being roasted at high temperature, and further improve the cracking resistance of the fireproof layer.
Preferably, the fibers consist of basalt fibers, high silica fibers and calcium silicate fibers according to the mass ratio of (15-20) to (2-3.5) to (5-9).
By adopting the technical scheme, the type ratio of the fibers is further optimized and adjusted, the strength and toughness of the fiber framework network are balanced, and the high-temperature cracking resistance of the fireproof layer is improved.
Preferably, the mass ratio of the refractory material to the anti-cracking agent is (5-6.25): 1.
By adopting the technical scheme, the proportion of the fireproof material and the anti-cracking agent is tested and adjusted, the fireproof heat-insulating property and the mechanical property of the fireproof layer are integrated, the fireproof layer is not easy to crack, and a better heat-insulating effect can be kept for a long time.
Preferably, the binder consists of cement, fly ash and triglycidyl isocyanurate in a mass ratio of (3-5) to (0.5-1) to (1.2-1.8).
By adopting the technical scheme, the composition ratio of the binder is optimized and adjusted, and cement, fly ash and triglycidyl isocyanurate are selected to bond raw materials such as the refractory material, so that the problem of poor thermal shock property of the refractory material under the high-temperature condition is solved.
Preferably, the raw material of the fire-proof layer also comprises 5-7 parts by weight of hydroxyapatite.
By adopting the technical scheme, the hydroxyapatite can play a role in auxiliary hardening, reduce shrinkage and cracking, promote condensation and combination of micro powder particle raw materials such as refractory materials and anti-cracking agents, further improve the state of the microstructure of the fireproof layer and improve the fireproof performance and high-temperature stability of the fireproof layer.
In a second aspect, the application provides a preparation process of a fireproof component for a steel structure, which adopts the following technical scheme: a preparation process of a fireproof component for a steel structure comprises the following steps:
s1: preparing fibers into a plurality of fiber nets, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula ratio to prepare an intermediate material;
s2: and (3) stacking the fiber webs, uniformly filling an intermediate material between every two fiber webs, and then pressing, shaping and drying to obtain the fireproof layer.
Further preferably, the preparation process of the fireproof component for the steel structure comprises the following steps:
s1: preparing fibers into a plurality of fiber nets, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula ratio to prepare an intermediate material;
s2: the fiber nets are stacked layer by layer, and intermediate materials are uniformly filled between every two layers of fiber nets, and then the fireproof layer is prepared after pressurization, shaping and drying;
s3: and (3) sequentially laminating and fixing the outer layer, the fireproof layer and the inner layer together to obtain the fireproof coating.
Further preferably, the preparation process of the fireproof component for the steel structure comprises the following steps:
s1: preparing fibers into a plurality of fiber nets, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula ratio to prepare an intermediate material;
s2: and (3) stacking the fiber nets, uniformly filling an intermediate material between every two fiber nets, and then carrying out pressurization shaping and drying to obtain the fireproof layer.
Through adopting above-mentioned technical scheme, the outer isolated flame in the initial stage of crossing a fire reflects most heat radiation, and the flame retardant coating plays fine isolated effect in the middle and later stages of crossing a fire to each component raw materials in the flame retardant coating has formed the micropore structure under high temperature environment, has stable thermal-insulated effect in the longer time, is difficult for taking place the shrink fracture simultaneously, and holistic fire behavior is better.
Preferably, the step S1 further includes a step of adding hydroxyapatite in the process of uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula ratio.
In a third aspect, the application provides an application of a fire-proof assembly for a steel structure, which adopts the following technical scheme: I. fixing the fireproof assembly on the surface of the steel structure substrate;
II. And filling gaps between the plates of the adjacent fireproof assemblies with fireproof glue.
In summary, the present application has the following beneficial effects:
1. because this application adopts skin, flame retardant coating and inlayer to use compositely, can carry out the protection of pertinence according to the different stages of crossing a fire, the micropore structure that utilizes the flame retardant coating to form under high temperature carries out fine isolated to the heat, and the flame retardant coating structure is difficult for shrink fracture, can be in long time remain stable, effectual guard action.
2. In the application, multiple fibers, refractory materials, anti-cracking agents and adhesives are preferably compounded for use, and the stability of the fireproof layer under the high-temperature condition is further improved by utilizing the skeleton supporting effect of a fiber network, so that the condition of shrinkage cracking is reduced.
3. The fireproof component for the steel structure, which is prepared by the preparation process, can be fixed on a steel structure building matrix, can play a good fireproof protection role, can be suitable for various civil buildings, industrial buildings, underground buildings and the like, and is wide in application range. And the fireproof component has lower production cost, can be produced in large batch and has higher comprehensive economic benefit.
Detailed Description
The present application will be described in further detail with reference to examples.
The raw materials of the examples and comparative examples of the present application are generally commercially available unless otherwise specified.
The size of the fire-proof component in the embodiment of the present application can be adjusted as needed, and preferably, the size of the fire-proof component in the embodiment is 1.22m × 2.44m.
Examples
Example 1
The fire prevention subassembly is used to steel construction of this embodiment includes skin, flame retardant coating and inlayer, and each layer is range upon range of the bonding in proper order together, and the gross thickness is 10mm.
Wherein, the outer layer is a reflecting layer with the thickness of 1mm and is made of aluminum-nickel alloy. The inner layer is a cement board with the thickness of 3mm.
The fireproof layer of the embodiment is prepared from the following raw materials in parts by weight: 50kg of fiber, 100kg of refractory material, 20kg of anti-cracking agent, 30kg of binder and 20kg of water.
The fiber is basalt fiber. The refractory material consists of aluminum oxide and bauxite according to the mass ratio of 3. The binder is ordinary portland cement, reference 42.5. The anti-cracking agent consists of boron trioxide, aluminum phosphate and ferrous succinate according to a molar ratio of 38.
The preparation method of the fireproof component for the steel structure comprises the following steps:
s1: weaving and cutting fibers into a plurality of fiber nets with corresponding specifications according to the size of a steel structure matrix, wherein the fiber nets are rectangular three-dimensional net structures, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and water according to the formula amount in a stirrer at the stirring speed of 300rpm to obtain an intermediate material;
s2: one of the fiber nets is used as a substrate, a layer of intermediate material with the thickness of 1mm is uniformly paved on the substrate, then a layer of fiber net is paved, then the operation is repeated, the fiber net and the intermediate material are sequentially overlapped layer by layer to prepare a green body, the intermediate material between the fiber nets is ensured to be uniformly filled, then the green body is placed under a hot press for pressing and shaping, the hot pressing temperature is 120 ℃, and finally, the fire-proof layer is prepared after further drying in the room temperature environment, wherein the thickness of the fire-proof layer is 7mm;
s3: and uniformly coating the surfaces of the outer layer, the fireproof layer and the inner layer with water glass fireproof glue, and then sequentially laminating, bonding and fixing the layers together to obtain the fireproof paint.
The application of the fireproof component for the steel structure comprises the following steps:
I. fixing the fireproof assembly on the surface of the steel structure substrate by using a buckle, and enabling the inner layer to be tightly attached to the surface of the steel structure; II. And filling gaps between the plates of the adjacent fireproof assemblies with the water glass fireproof glue.
Example 2
The fire prevention subassembly is used to steel construction of this embodiment includes skin, flame retardant coating and inlayer, and each layer is range upon range of the bonding in proper order together, and the gross thickness is 25mm.
Wherein, the outer layer is a reflecting layer with the thickness of 2mm and is made of 304 stainless steel materials. The inner layer is a glass fiber plate with the thickness of 3mm.
The fireproof layer of the embodiment is prepared from the following raw materials in parts by weight: 80kg of fibers, 200kg of refractory materials, 35kg of anti-cracking agents, 50kg of binding agents and 35kg of water.
The fiber is rock wool fiber. The refractory material is bauxite. The adhesive is epoxy phenolic resin. The anti-cracking agent consists of boron trioxide, aluminum phosphate and ferrous succinate according to a molar ratio of 38.
The preparation method of the fireproof component for the steel structure comprises the following steps:
s1: weaving and cutting fibers into a plurality of fiber nets with corresponding specifications according to the size of a steel structure matrix, wherein the fiber nets are rectangular three-dimensional net structures, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and water in a formula according to the formula amount in a stirrer at a stirring speed of 200rpm to obtain an intermediate material;
s2: taking one of the fiber nets as a substrate, uniformly paving a layer of intermediate material with the thickness of 2mm on the substrate, then paving a layer of fiber net, repeating the operation to enable the fiber net and the intermediate material to be sequentially stacked layer by layer to prepare a blank body, ensuring the uniform filling of the intermediate material between the fiber nets, then putting the blank body under a hot press for pressurization and shaping, wherein the hot pressing temperature is 150 ℃, and finally, further drying at room temperature to prepare a fireproof layer with the thickness of 20mm;
s3: and uniformly coating the surfaces of the outer layer, the fireproof layer and the inner layer with water glass fireproof glue, and then sequentially laminating, bonding and fixing the layers together to obtain the fireproof paint.
The application of the fireproof component for the steel structure comprises the following steps:
I. fixing the fireproof assembly on the surface of the steel structure substrate by using bolts, and enabling the inner layer to be tightly attached to the surface of the steel structure;
II. And filling gaps between the plates of the adjacent fireproof assemblies with the water glass fireproof glue.
Example 3
The fire prevention subassembly is used to steel construction of this embodiment, including skin, flame retardant coating and inlayer, each layer is range upon range of the bonding in proper order and is in the same place, and the gross thickness is 20mm.
Wherein, the outer layer is a reflecting layer with the thickness of 1.5mm and is made of 304 stainless steel materials. The inner layer is a glass fiber plate with the thickness of 4mm.
The fireproof layer of the embodiment is prepared from the following raw materials in parts by weight: 80kg of fiber, 200kg of refractory material, 32kg of anti-cracking agent, 50kg of binder and 30kg of water.
The fibers are glass fibers. The refractory material consists of magnesium oxide, mullite and coal gangue in a mass ratio of 2. The adhesive is epoxy phenolic resin. The anti-cracking agent consists of boron trioxide, aluminum phosphate and ferrous succinate according to a molar ratio of 38.
The preparation method of the fireproof component for the steel structure comprises the following steps:
s1: weaving and cutting fibers into a plurality of fiber nets with corresponding specifications according to the size of a steel structure matrix, wherein the fiber nets are rectangular three-dimensional net structures, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and water in a formula according to the formula amount in a stirrer at a stirring speed of 280rpm to obtain an intermediate material;
s2: one of the fiber nets is used as a substrate, a layer of intermediate material with the thickness of 1.5mm is uniformly paved on the substrate, then a layer of fiber net is paved, then the operation is repeated, the fiber net and the intermediate material are sequentially overlapped layer by layer to prepare a green body, the intermediate material between the fiber nets is ensured to be uniformly filled, then the green body is placed under a hot press for pressing and shaping, the hot pressing temperature is 135 ℃, and finally, the fire-proof layer is prepared after further drying in the room temperature environment, wherein the thickness of the fire-proof layer is 15mm;
s3: and uniformly coating the surfaces of the outer layer, the fireproof layer and the inner layer with water glass fireproof glue, and then sequentially laminating, bonding and fixing the layers together.
The application of the fireproof component for the steel structure comprises the following steps:
I. fixing the fireproof assembly on the surface of the steel structure substrate by using bolts, and enabling the inner layer to be tightly attached to the surface of the steel structure;
II. And filling gaps between the plates of the adjacent fireproof assemblies with the water glass fireproof glue.
Example 4
The fire-proof assembly for steel structure of this embodiment is different from embodiment 3 in that: in the raw materials of the fire-proof layer, the anti-cracking agent consists of boron trioxide, aluminum phosphate and ferric succinate according to a molar ratio of 50.
The process for manufacturing the fire protection module for a steel structure of this example was the same as that of example 3.
The application of the fire-retardant module for steel structure of this embodiment is the same as that of embodiment 3.
Example 5
The fire-proof component for steel structure of this embodiment is different from embodiment 4 in that: the organic acid ferric salt of the material of the flame-retardant layer was ferric tartrate, and the rest was the same as in example 4.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 4.
The application of the fire-retardant module for steel structure of this embodiment is the same as that of embodiment 4.
Example 6
The fire-proof assembly for steel structure of this embodiment is different from embodiment 4 in that: the organic acid ferric salt of the material of the flame-retardant layer was ferric citrate, and the rest was the same as in example 4.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 4.
The application of the fire-retardant module for steel structure of this embodiment is the same as that of embodiment 4.
Example 7
The fire-proof assembly for steel structure of this embodiment is different from embodiment 4 in that: in the raw materials of the fire-proof layer, the organic acid iron salt is composed of ferric p-hydroxybenzoate and ferric citrate according to the molar ratio of 0.35.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 4.
The application of the fire-retardant module for steel structure of this embodiment is the same as that of embodiment 4.
Example 8
The fire-proof component for steel structure of this embodiment is different from embodiment 7 in that: in the raw materials of the fire-proof layer, the fibers consist of high silica fibers, ceramic fibers and calcium silicate according to the mass ratio of 3.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 7.
The application of the fire-retardant module for steel structure of this example is the same as example 7.
Example 9
The fire-proof component for steel structure of this embodiment is different from embodiment 7 in that: in the raw materials of the fire-proof layer, the fibers consist of basalt fibers, high silica fibers and calcium silicate fibers according to the mass ratio of 15.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 7.
The application of the fire-proof assembly for steel structure of this example is the same as example 7.
Example 10
The fire-proof assembly for steel structure of this embodiment is different from embodiment 7 in that: in the raw materials of the fire-proof layer, the fibers consist of basalt fibers, high silica fibers and calcium silicate fibers according to the mass ratio of 20.
The process for preparing the fire protection module for a steel structure of this example was the same as example 7.
The application of the fire-proof assembly for steel structure of this example is the same as example 7.
Example 11
The fire-proof assembly for steel structure of this embodiment is different from embodiment 9 in that: in the raw materials of the fireproof layer, the binder consists of cement, fly ash and triglycidyl isocyanurate in a mass ratio of 3.
The process for preparing the fire-retardant module for steel structure of this example was the same as that of example 9.
The application of the fire-proof assembly for steel structure of this example is the same as example 9.
Example 12
The fire-proof assembly for steel structure of this embodiment is different from embodiment 9 in that: in the raw materials of the fireproof layer, the binder consists of cement, fly ash and triglycidyl isocyanurate in a mass ratio of 5.
The process for manufacturing the fire protection module for a steel structure of this example was the same as that of example 9.
The application of the fire-proof assembly for steel structure of this example is the same as example 9.
Example 13
The fire-proof assembly for steel structure of the present embodiment is different from embodiment 12 in that: the material of the fire-retardant layer also included 6.2kg of hydroxyapatite, and the rest was the same as in example 12.
The preparation process of the fireproof component for the steel structure in the embodiment is different from that in the embodiment 12 in that: in step S1, the refractory material, the anti-cracking agent, the binder, the hydroxyapatite and the water with the formula ratio are uniformly mixed in a stirrer at a stirring speed of 280rpm to prepare an intermediate material.
The application of the fire-retardant module for steel structure of this example is the same as that of example 12.
Example 14
The fire prevention subassembly is used to steel construction of this embodiment includes the flame retardant coating, and the thickness of flame retardant coating is 10mm.
The fireproof layer of the embodiment is prepared from the following raw materials in parts by weight: 50kg of fiber, 30kg of binder and 20kg of water.
The fibers are glass fibers. The binder is ordinary portland cement, reference 42.5.
The preparation method of the fireproof component for the steel structure comprises the following steps:
s1: weaving and cutting fibers into a plurality of fiber nets with corresponding specifications according to the size of a steel structure matrix, wherein the fiber nets are rectangular three-dimensional net structures, and then uniformly mixing the binder and water with the formula amount in a stirrer at a stirring speed of 300rpm to obtain an intermediate material;
s2: one of the fiber nets is used as a substrate, a layer of intermediate material with the thickness of 1mm is uniformly paved on the substrate, then a layer of fiber net is paved, then the operation is repeated, the fiber net and the intermediate material are sequentially overlapped layer by layer to prepare a blank body, the uniform filling of the intermediate material between the fiber nets is ensured, then the blank body is placed under a hot press for pressing and shaping, the hot pressing temperature is 120 ℃, and finally the fire-proof layer is prepared after further drying in the room temperature environment, wherein the thickness of the fire-proof layer is 10mm.
The application of the fireproof component for the steel structure comprises the following steps:
I. fixing the fireproof component on the surface of a steel structure matrix by using a buckle, and enabling the fireproof layer to be tightly attached to the surface of the steel structure;
II. And filling gaps between the plates of the adjacent fireproof assemblies with the water glass fireproof glue.
Comparative example
Comparative example 1
The fireproof assembly for the steel structure comprises an outer layer, a fireproof layer and an inner layer, wherein the layers are sequentially stacked and bonded together, and the total thickness is 10mm.
Wherein, the outer layer is a reflecting layer with the thickness of 1mm and is made of aluminum-nickel alloy. The inner layer is a cement board with the thickness of 3mm.
The fire-proof layer of the comparative example was made from the following raw materials by weight: 50kg of fibers, 120kg of refractory materials, 30kg of binding agents and 20kg of water.
The fiber is basalt fiber. The refractory material consists of aluminum oxide and bauxite according to the mass ratio of 3. The binder is ordinary portland cement, reference 42.5.
The preparation method of the fireproof component for the steel structure comprises the following steps:
s1: weaving and cutting fibers into a plurality of fiber nets with corresponding specifications according to the size of the steel structure matrix, wherein the fiber nets are rectangular three-dimensional net structures, and then uniformly mixing the refractory material, the binder and water in a formula ratio in a stirrer at a stirring speed of 300rpm to obtain an intermediate material;
s2: one of the fiber nets is used as a substrate, a layer of intermediate material with the thickness of 1mm is uniformly paved on the substrate, then a layer of fiber net is paved, then the operation is repeated, the fiber net and the intermediate material are sequentially overlapped layer by layer to prepare a green body, the uniform paving of the intermediate material among the fiber nets is ensured, then the green body is placed under a hot press for pressing and shaping, the hot pressing temperature is 120 ℃, and finally, the fire-proof layer is prepared after further drying in the room temperature environment, wherein the thickness of the fire-proof layer is 7mm;
s3: and uniformly coating the surfaces of the outer layer, the fireproof layer and the inner layer with water glass fireproof glue, and then sequentially laminating, bonding and fixing the layers together.
The application of the fire-retardant module for steel structure of this comparative example is the same as example 1.
Comparative example 2
The fire-proof assembly for steel structure of this comparative example is different from example 1 in that: in the raw materials of the fire-proof layer, the anti-cracking agent is composed of boron trioxide and aluminum phosphate according to the molar ratio of 50.
The process for preparing the fire-retardant module for steel structure of this comparative example was the same as in example 1.
The application of the fire-retardant module for steel structure of this comparative example is the same as example 1.
Comparative example 3
The fire-proof assembly for a steel structure of this comparative example is different from example 1 in that: the raw material of the fire-proof layer was iron succinate, and the rest was the same as in example 1.
The process for preparing the fire-retardant module for steel structure of this comparative example was the same as in example 1.
The application of the fire-retardant module for steel structure of this comparative example is the same as example 1.
Comparative example 4
The fire-proof assembly for steel structure of this comparative example is different from example 1 in that: the raw material of the fire-proof layer was aluminum sodium sulfate as the anticracking agent, and the rest was the same as in example 1.
The process for preparing the fire protection member for a steel structure of this comparative example was the same as in example 1.
The application of the fire-retardant module for steel structure of this comparative example is the same as example 1.
Comparative example 5
The fire-proof assembly for steel structure of this comparative example is different from example 1 in that: in the raw materials of the fire-proof layer, the anti-cracking agent consists of boron trioxide, aluminum phosphate and ferrous succinate according to a molar ratio of 18.
The process for preparing the fire-retardant module for steel structure of this comparative example was the same as in example 1.
The application of the fire-retardant module for steel structure of this comparative example is the same as example 1.
Performance test
Detection method
The fire-resistant components for the steel structures of examples 1 to 13 and comparative examples 1 to 5 were tested for fire-resistant performance according to the national standard GB/T14907-2018, and the test results are shown in Table 1.
The fire-proof layers of examples 1 to 13 and comparative examples 1 to 5 were prepared into test pieces of 500mm × 500mm specification, and after 1 hour of fire, surface cracking was observed, and the number of cracks on the surface of the test pieces was recorded, and the test results are shown in table 1.
The fire-proof layers of examples 1 To 13 and comparative examples 1 To 5 were prepared into test pieces of 500mm × 500mm specification according To the formula θ = (To-T)/To × 100%, θ is the attenuation of thermal insulation efficiency in units of%; to is the standard heat insulation efficiency, and the unit is min; t is the heat insulation efficiency after 1h of fire passing, the unit is min, and the test result is shown in Table 1.
TABLE 1 data of performance test of fire protection components for steel structures of examples 1 to 13 and comparative examples 1 to 5
As can be seen from the analysis of examples 1 to 3, example 4 and comparative examples 1 to 4 in combination with table 1, the composition ratio of the raw materials in the fire-resistant layer tested has an influence on the fire resistance of the fire-resistant layer, and the composition of the crack-resistant agent is optimized and adjusted, it can be seen that the crack resistance of comparative example 1 without the addition of the crack-resistant agent is severely reduced, the number of cracks is increased by about 4.9 times, and the decrement in thermal insulation efficiency is also increased from 31.6% to 57.8%, compared to example 1. In addition, it can be seen that the number of cracks of the comparative example 3 in which only the organic acid iron salt was added was reduced by 32 and the decrement in thermal insulation efficiency was reduced by about 16% as compared to the comparative example 2 in which only boron trioxide and aluminum phosphate were added. As can be seen from the analysis of example 4 and comparative example 4, the number of cracks of example 4 was reduced by about 26.8% compared to the conventional aluminum sodium sulfate anti-cracking agent.
It can be seen from the analysis of examples 5 to 7 and comparative example 5 in combination with table 1 that the further optimization and adjustment of the composition ratio of the organic acid iron salt improves the state of the microporous structure in the fire-proof layer, and the number of cracks in example 7 is decreased by about 20% compared to the thermal insulation efficiency decrement in comparative example 5.
As can be seen from analysis of examples 8 to 10, examples 11 to 12, and example 13 in combination with table 1, optimization and adjustment of the composition ratio of the fibers and the composition ratio of the binder further improve the fire resistance and crack resistance of the fire-proof layer, and the thermal insulation decrement of example 12 is reduced by about 15.3% as compared with example 7. And after the hydroxyapatite is added, the interface bonding state and the pore structure state between particle raw materials such as refractory materials, anti-cracking agents and the like are improved, the number of cracks is reduced by 4 compared with that in example 12, and the attenuation of the heat insulation efficiency is reduced by about 9.7%.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. A fireproof assembly for a steel structure is characterized by comprising a fireproof layer; the fireproof layer is mainly prepared from the following raw materials in parts by weight:
fiber: 50-80 parts;
refractory materials: 0-200 parts;
anti-cracking agent: 0-35 parts;
adhesive: 30-50 parts;
water: 20-35 parts;
the refractory material is at least one of bauxite, mullite, magnesium oxide, aluminum oxide and coal gangue; the anti-cracking agent consists of diboron trioxide, aluminum phosphate and organic acid iron salt according to the molar ratio of (38-50) to (12-18) to (20-25).
2. The fire protection assembly for the steel structure of claim 1, wherein the organic acid iron salt is at least one of iron tartrate salt, iron phthalate salt and iron citrate salt.
3. The fire protection assembly for steel structure of claim 1, wherein said fiber is one or more of basalt fiber, glass fiber, high silica fiber, rock wool fiber, calcium silicate fiber, ceramic fiber.
4. The fireproofing assembly for steel structures of claim 3, wherein said fibers are composed of basalt fibers, high silica fibers, calcium silicate fibers in a mass ratio of (15-20): (2-3.5): (5-9).
5. The fireproofing assembly for steel structures of claim 1, wherein the mass ratio of the fireproofing material to the anti-cracking agent is (5-6.25): 1.
6. The fireproof assembly for steel structures as claimed in claim 1, wherein the binder comprises cement, fly ash, triglycidyl isocyanurate in a mass ratio of (3-5): (0.5-1): (1.2-1.8).
7. The fire protection assembly for steel structures of claim 1, wherein the fire protection layer further comprises hydroxyapatite in 5-7 parts by weight.
8. A process for the preparation of a fire protection assembly for steel structures according to any of claims 1 to 6, comprising the steps of:
s1: preparing fibers into a plurality of fiber nets, and then uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula ratio to prepare an intermediate material;
s2: and (3) stacking the fiber webs, uniformly filling an intermediate material between every two fiber webs, and then pressing, shaping and drying to obtain the fireproof layer.
9. The process for preparing the fireproof assembly for the steel structure according to claim 8, wherein the step of adding hydroxyapatite is further included in the process of uniformly mixing the refractory material, the anti-cracking agent, the binder and the water according to the formula in the step S1.
10. The application of the fireproof component for the steel structure is characterized by comprising the following steps:
I. securing a fire protection assembly as claimed in any one of claims 1 to 7 to a surface of a steel structural substrate;
II. And filling gaps between the plates of the adjacent fireproof assemblies with fireproof glue.
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