CN108559359A - A kind of fire-resistant coating for steel structure and preparation method thereof of decalescence, expandable flame retardant - Google Patents

A kind of fire-resistant coating for steel structure and preparation method thereof of decalescence, expandable flame retardant Download PDF

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CN108559359A
CN108559359A CN201810381517.8A CN201810381517A CN108559359A CN 108559359 A CN108559359 A CN 108559359A CN 201810381517 A CN201810381517 A CN 201810381517A CN 108559359 A CN108559359 A CN 108559359A
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fire
component
parts
preparation
resistant coating
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CN108559359B (en
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胡云楚
袁利萍
王琼
文瑞芝
黄自知
王文磊
胡进波
吴袁泊
李慧
陈秋菊
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Central South University of Forestry and Technology
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18Fireproof paints including high temperature resistant paints
    • C09D5/185Intumescent paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/32Radiation-absorbing paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/06Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
    • C09K5/063Materials absorbing or liberating heat during crystallisation; Heat storage materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2237Oxides; Hydroxides of metals of titanium
    • C08K2003/2241Titanium dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/32Phosphorus-containing compounds
    • C08K2003/321Phosphates
    • C08K2003/322Ammonium phosphate
    • C08K2003/323Ammonium polyphosphate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/02Flame or fire retardant/resistant
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention discloses a kind of decalescence, the fire-resistant coating for steel structures of expandable flame retardant, including component A and component B, in parts by weight, the component A includes 80 100 parts of base-material and 13 31 parts of fire-proof flame-retarded agent, the base-material includes PEG melamine copolymer resins, the fire-proof flame-retarded agent includes the expanded graphite of the expanded perlite and load chlorinated paraffin that load ammonium polyphosphate, and the component B includes epoxy resin, and the mass ratio of the component A and component B is (0.8 1.25):1.The present invention correspondingly provides a kind of preparation method of above-mentioned fire-resistant coating for steel structure.Fire-resistant coating for steel structure in the present invention can inhibit that temperature rapid increase, fire protection efficiency is high under middle low temperature.

Description

A kind of fire-resistant coating for steel structure and preparation method thereof of decalescence, expandable flame retardant
Technical field
The invention belongs to fireproof material technology fields more particularly to a kind of fire-resistant coating for steel structure and preparation method thereof.
Background technology
The structure that steel construction is made of steel material is one of main building construction types.It is lighter because conducting oneself with dignity, and apply Work is easy, is widely used in the fields such as large-sized workshop, venue, high-rise building.Steel be it is a kind of itself will not burn build Material is built, it has the characteristics such as antidetonation, bending resistance.In practical applications, steel component both can be with the load of relative increase building Ability can also meet the needs of architectural design aesthetic feeling moulding, it is thus also avoided that the construction materials such as concrete cannot be bent, stretch Defect.Therefore steel receive the favor of building trade, single layer, multilayer, skyscraper, workshop, storehouse, waiting room, boarding lounge Deng all very universal as structural member using steel.`
But steel as construction material in terms of fire prevention again there are the defect that some are difficult to avoid that, its mechanical performance, Such as yield point, tension and elasticity modulus can drastically decline because of the raising of temperature.Steel construction when temperature is more than 250 DEG C its Material varies widely, and not only intensity gradually reduces, it also occur that blue shortness and phenomenon of creeping.Steel construction is usually in 450-650 Bearing capacity will be lost in DEG C, prodigious deformation occurs, and led to steel column, girder steel bending, cannot be continued because of excessive deformation It uses.When temperature is up to 600 DEG C, steel enter mecystasis cannot continue to carry steel construction, and intensity is almost nil.Generally it is not added with The fire endurance of the steel construction of protection is 15 minutes or so, the length of this time is also related with the speed of component heat absorption.Therefore, It is imperative that flameproof protection is carried out to steel construction.
The fire-resistant coating for steel structure of steel structure surface have fire-proof and thermal-insulation effect, prevent steel be brought rapidly up in a fire and Intensity is reduced, steel construction is avoided to lose enabling capabilities and building is caused to collapse.
Super-thin steel structure fire-proof paint refers to coating layer thickness within 3mm (containing 3mm), decorative effect is preferable, high temperature When expansion foaming, fire-resistant coating for steel structure of the fire endurance generally within 2h.Such fire-resistant coating for steel structure is generally molten Dosage system has the characteristics that superior bond strength, weather-proof water-tolerant, good leveling property, good decorative property;It is slow when by fire Expanded foamed to form fine and close hard fire proof heat-insulation layer, which has very strong flameproofed impact-resistance, has delayed the temperature of steel It rises, effective protection steel member.Fire-proof and thermal-insulation principle coated in ultrathin type or thin section steel structure fire-resisting paint on steel construction is Fireproof coating layer is expanded foamed when by fire, forms foam, froth bed has not only completely cut off oxygen, but also has because its quality is loose Have good heat-proof quality, can retardation heat be transmitted to by the transmission speed of protection base material.Since such fireproof paint coating is ultra-thin, So that usage amount thicker type, thin section steel structure fire-resisting paint greatly reduce, to reduce engineering total cost, and steel construction is made to obtain Effective flameproof protection is arrived.
Chinese invention patent 200710196405.7 disclose fire prevention intumescing, multi-component epoxide resin-coating composition and its Purposes contains at least one epoxy resin and at least one ethylene containing component A, curing agent component B and expansion component C, component A Base ester, component B contain at least one curing agent for epoxy resin, and component C contains at least one sour component, at least one carbon Source and at least one gas generating agent, wherein component A and B are separated from each other presences, and the ability in mixing in a manner of inhibiting reaction Reaction, polymerize.Chinese invention patent 201610091765.X discloses Waterborne Fire Retardant Coatings for Steel and preparation method thereof, The primary raw material matched by following weight is prepared:Ammonium polyphosphate 15-23, melamine 11-13, pentaerythrite 6-12, water Property epoxy resin 7-13, hydroxyl acrylic emulsion 11-15, phenolic resin 6-10, montmorillonite 2-6, deionized water 19-25, thickening Agent 1.0-1.8, dispersant 2-4, antifoaming agent 0.14-0.22.Chinese invention patent 201610091597.4 discloses a kind of steel knot Structure fireproof coating and preparation method thereof, the primary raw material matched by following weight are prepared:19-23 parts of ammonium polyphosphate, trimerization 9-17 parts of cyanamide, 7-14 parts of pentaerythrite, 4-9 parts of Ludox, 8-11 parts of acrylate and vinyl acetate emulsion, 5-11 parts of high chlorinated polyethylene resin, 3-6 parts of glass fiber powder, 20-24 parts of deionized water, 1.2-2.2 parts of thickener, 2-4 parts of dispersant, 0.2-0.3 parts of antifoaming agent. Chinese invention patent 201610091589.X discloses steel-structure ultrathin intumescent fire retardant coating and preparation method thereof, by following heavy The primary raw material of amount proportioning is prepared:17-20 parts of ammonium polyphosphate, 10-15 parts of melamine, 6-10 parts of pentaerythrite, acetic acid 6-12 parts of ethylene-vinyl copolymer emulsion, 4-8 parts of thermoplastic acrylic resin, 5-10 parts of Corvic, precipitated calcium carbonate 3- 7 parts, 2.5-3.5 parts of methylcellulose, 18-26 parts of deionized water, 1-2 parts of thickener, 3.5-5.0 parts of dispersant, antifoaming agent 0.1-0.3 parts.Chinese invention patent 200810046370.3 discloses a kind of phosphor-nitrogen ultrathin expansion type steel structure fire-resistant coating, 40-75 parts of binder resin being made of acrylic resin modified, polyurethane resin and alkyd resin, 50-70 parts of expanding fire retardant, 8-12 parts of titanium dioxide, 8-12 parts of calcium carbonate, 18-35 parts of the mixed solvent being made of dimethylbenzene and butyl acetate form.
Although the above research work achieves some gratifying achievements, existing steel expansion of fire retardant coating cannot be Middle low temperature range inhibits that temperature rapid increase, fire protection efficiency is not high, therefore, develops that can inhibit temperature under a kind of middle low temperature fast Speed rises, the fireproof coating of the high steel construction of fire protection efficiency is necessary.
Invention content
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, one kind is provided Fire protection efficiency is high, foam layer of charcoal is expanded under decalescence, high temperature under middle low temperature is applied with the fire prevention of thermal insulation protection steel construction Material, and a kind of preparation method of the coating is accordingly provided.In order to solve the above technical problems, technical solution proposed by the present invention is:
The fire-resistant coating for steel structure of a kind of decalescence, expandable flame retardant, including component A and component B, in parts by weight, institute It includes 80-100 parts of base-material and 13-31 parts of fire-proof flame-retarded agent to state component A, and the base-material includes PEG- melamines copolymerization tree Fat, the fire-proof flame-retarded agent include the expanded perlite of load ammonium polyphosphate and load the expanded graphite of chlorinated paraffin, described group It includes epoxy resin to divide B, and the mass ratio of the component A and component B is (0.8-1.25):1.
Above-mentioned decalescence, expandable flame retardant fire-resistant coating for steel structure in, it is preferred that the fire-proof flame-retarded agent includes following The component of parts by weight:
Above-mentioned decalescence, expandable flame retardant fire-resistant coating for steel structure in, it is preferred that the component A further includes following heavy Measure the auxiliary additive of part:
In above-mentioned auxiliary additive, dust-proofing agent selects polyoxyethylene oleic acid ester, drier to select zinc Isoocatanoate, flatting silica The flatting silica of the model TS100 of goldschmidt chemical corporation production, levelling agent is selected to select the production of Dongguan City Mo Neng Chemical Co., Ltd.s MONENG-1105 modified polydimethyl polysiloxanes, dispersant select Foshan City Shuande Tian Bang auxiliary agents Co., Ltd production The dispersant of model 4010T.
In above-mentioned auxiliary additive, nano-stannic oxide can be used as smoke suppressant, has conversion under Fire Conditions and inhibits Flue gas reduces the effect that smog is poisoned, while nano-stannic oxide also has small-size effect, quantum size effect, surface effect Should and macro quanta tunnel effect, to visible light have good permeability.
Above-mentioned decalescence, expandable flame retardant fire-resistant coating for steel structure in, it is preferred that the epoxy resin be epoxy resin The hydroxyl value of E44, general control epoxy resin are 1.0moL/kg, and the interior hydroxyl of epoxide number 4.2moL/kg, fireproof coating contain It is optimal selection that amount, which is 3.79moL/kg,.The hydroxyl value of epoxy resin influences the property such as solidification, cross-link intensity, the gel time of coating Can, experimental study shows optimal using the comprehensive performance of the finally obtained fireproof coatings of epoxy resin E44 in the present invention.
The technical concept total as one, the present invention also provides a kind of above-mentioned decalescence, the steel constructions of expandable flame retardant The preparation method of fireproof coating, includes the following steps:
(1) expanded perlite and load chlorinated paraffin for preparing PEG- melamines copolymer resins, loading ammonium polyphosphate Expanded graphite;
(2) by the PEG- melamines copolymer resins being prepared in step (1), the expanded perlite of load ammonium polyphosphate It is ground up, sieved to obtain group after mixing with dipentaerythritol, melamine, auxiliary additive with the expanded graphite of load chlorinated paraffin Divide A;
(3) after mixing component A with component B, diluent is added and adjusts viscosity, stirs the fireproof coating up to steel construction.
The fireproof coating obtained in above-mentioned preparation method is coated on Steel material when in use, using spraying or by the way of brushing Surface.
In above-mentioned preparation method, it is preferred that the preparation method of the PEG- melamines copolymer resins includes the following steps: 20-30 parts of melamines and 40-60 parts of formaldehyde (mass fraction 37%) are added in reaction kettle, adjusting pH value is 6.5-7.5, It is heated to 50-60 DEG C of reaction 20min, adds 40-60 parts of polyethylene glycol PEG-600, adjusting pH value is 4.5-5.0, and reflux is anti- 1.0-2.0h is answered, then steams moisture to get PEG- melamine copolymer resins.
In above-mentioned preparation method, it is preferred that the preparation method of the expanded perlite of the load ammonium polyphosphate includes following Step:20-30 parts of expanded perlites, 12-15 parts of urea and 20-40 parts of phosphoric acid (mass fraction 85%) stirrings are milled It is even, under protection of ammonia, it is heated to 120-130 DEG C of prepolymerization 20-30min, is then heated to 230-240 DEG C of polymerizing curable 130-160min is reacted, product is cooled to room temperature, 0.1-1.0 parts of hydroxy silicon oils are added, 400 mesh are crossed after grinding 1.0-3.0h It sieves to get the expanded perlite of load ammonium polyphosphate.
In above-mentioned preparation method, it is preferred that the preparation method of the expanded graphite of the load chlorinated paraffin includes following step Suddenly:10-20 parts of expanded graphites are heated to 70-90 DEG C, while vacuumizing and reaching 20-50kPa, keep the temperature 10-30min, so 80-90 part chlorinated paraffin cp42 are added afterwards, in 70-90 DEG C of reaction 40-80min under normal pressure, product is cooled to room temperature, is added 0.1-1.0 parts of hydroxy silicon oils, 1.0-3.0h is to get expanded graphite supporting chlorinated paraffin for grinding.
In above-mentioned preparation method, it is preferred that in the step (3), the diluent is acetone, and the stirring is at a high speed Shear mixer is stirred 5-10min in 600-10000r/min down cuts.
Using the phase-change characteristic of phase-change material, the phase-change material PEG- melamines in fire early period of origination, fireproof coating Amine copolymer resin can utilize phase transformation to absorb heat, effectively control temperature rise, fire is nipped in the bud, and small fire is extinguished Phase-change material releases heat again in coating afterwards, will not generate substantive damage to coating surface.In the fire later stage, fireproof coating exists It is expanded under high temperature, forms good foam layer of charcoal, can effectively completely cut off heat and oxygen.In expansion process, there is three A fundamental, i.e. acid source, charcoal source and air source.In the present invention, ammonium polyphosphate can be used as acid source, expanded perlite, expanded graphite Charcoal source is can be used as with pentaerythrite etc., melamine etc. can be used as air source, and acid source, charcoal source and air source can form carbonaceous at high temperature Froth bed plays heat-insulated, oxygen barrier, suppression cigarette, antidrip and other effects, has excellent flame retardant property.
The principle of the present invention is as follows:1) fireproof coating of the invention inhibits the intensity of a fire, fire in Initial Stage of Fire by decalescence Post disaster phase coating is expanded into foam layer of charcoal at high temperature, can have the function that trap heat with prevent steel temperature it is rapid on It rises.2) the PEG- trimerizations being copolymerized with melamine with the polyethylene glycol PEG-600 with decalescence function in the present invention Component part of the cyanamide copolymer resins as coating, the heat which absorbs is huge, cooling Flameproof effect is notable, in addition, melamine is also used as air source when coating expands.3) to load ammonium polyphosphate in the present invention Expanded perlite with load chlorinated paraffin expanded graphite as fire-proof flame-retarded agent, the two can be expanded into bubble at high temperature Foam layer of charcoal with heat-insulated, meanwhile, can be with by loading ammonium polyphosphate and chlorinated paraffin respectively on expanded perlite and expanded graphite Expanded perlite and expanded graphite and resin binder compatibility are solved the problems, such as well;Load the expanded perlite of ammonium polyphosphate Ammonium polyphosphate and chlorinated paraffin, ammonium polyphosphate and chlorinated paraffin can be discharged at high temperature with the expanded graphite of load chlorinated paraffin Play the role of fire-retardant;In addition, expanded perlite can also decompose the flue dust and poison discharged by effective sorbing material under Fire Conditions Gas.4) the PEG- melamines copolymer resins selected by the present invention, the expanded perlite for loading ammonium polyphosphate, load chlorinated paraffin Expanded graphite, high temperature resistant hydroxy silicon oil, amido silicon oil, C1214 fatty alcohol phosphates, MONENG-1105 modified polydimethyls Polysiloxanes can effectively improve the stability of coating and the adhesion strength of paint film, heat-resistant oxidized low temperature tolerance characteristics, while also simultaneous There is the effect of fire-retardant fireproof.The decalescence of the present invention, the fire-resistant coating for steel structure of expandable flame retardant, can be with effective guarantee steel Intensity, the fire resistance period of steel construction improve 2 hours or more, win opportunity for firefighting rescue and escape, reduce the personnel in fire And property loss.
Compared with the prior art, the advantages of the present invention are as follows:
1, fireproof coating of the invention inhibits the intensity of a fire in Initial Stage of Fire by decalescence, and fire later stage coating is at high temperature It is expanded into foam layer of charcoal, can have the function that trap heat to prevent steel temperature from rising rapidly, to extend the rescue of fire Time.
2, contain PEG- melamine copolymer resins in the base-material of instant component A, have the function of phase-change accumulation energy, Initial Stage of Fire can absorb a large amount of heat to inhibit the intensity of a fire, in addition, melamine is also used as air source when coating expands.
3, in the present invention to load the expanded graphite of the expanded perlite of ammonium polyphosphate and load chlorinated paraffin as preventing fires Fire retardant, it is good with the base-material compatibility of coating, foam layer of charcoal can be expanded under high temperature with heat-insulated, flame retardant effect is notable, separately Outside, effectively the flue dust and poison gas discharged can also be decomposed by sorbing material after expanded perlite release ammonium polyphosphate.
Specific implementation mode
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with preferred embodiment, But the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city Field is commercially available or can be prepared by existing method.
Embodiment 1:
The fire-resistant coating for steel structure of a kind of decalescence, expandable flame retardant, including component A and component B, component A are PEG- tri- Poly cyanamid copolymer resins, fire-proof flame-retarded agent and auxiliary additive, component B are epoxy resin E44;Fire-proof flame-retarded agent loads polyphosphoric acid The expanded perlite of ammonium, expanded graphite, dipentaerythritol and the melamine for loading chlorinated paraffin;Auxiliary additive is nanometer two It is tin oxide, titanium dioxide, aluminium powder, wollastonite, polyoxyethylene oleic acid ester, organic silicon defoamer, hydroxy silicon oil, amido silicon oil, different Zinc octoate, flatting silica (flatting silica of the model TS100 of goldschmidt chemical corporation production), MONENG-1105 modified polydimethyls are poly- (Foshan City Shuande day nation helps for siloxanes (production of Dongguan City Mo Neng Chemical Co., Ltd.s), C1214 fatty alcohol phosphates, dispersant The dispersant of the model 4010T of agent Co., Ltd production).
The preparation method of the fire-resistant coating for steel structure of the present embodiment includes the following steps:
(1) expanded perlite and load chlorinated paraffin for preparing PEG- melamines copolymer resins, loading ammonium polyphosphate Expanded graphite;Wherein:
The preparation method of PEG- melamine copolymer resins includes the following steps:By 13g melamines and 24g mass fractions It is added in reaction kettle for 37% formaldehyde, it is 7.2 to adjust pH value with sodium carbonate liquor, is heated to 55 DEG C of reaction 20min, adds 25g polyethylene glycol PEG-600, it is 4.5-5.0 to adjust pH value with hydrochloric acid solution, then back flow reaction 1.5h steams moisture, obtains PEG- melamine copolymer resins;
The preparation method for loading the expanded perlite of ammonium polyphosphate includes the following steps:By 15g expanded perlites, 8g urea It is that the stirring of 85% phosphoric acid is milled uniformly with 25mL mass fractions, is added in reactor, 124 DEG C of pre-polymerizations are heated under protection of ammonia Reaction 25min is closed, 235 DEG C of polymerization curing reaction 140min is then further heated to, product is cooled to room temperature, is added 0.6g high temperature resistant hydroxy silicon oils grind 2.5h in planetary ball mill, cross 400 mesh sieve, obtain expanded perlite load polyphosphoric acid Ammonium;
The preparation method for loading the expanded graphite of chlorinated paraffin includes the following steps:In the reactor by 15g expanded graphites 80 DEG C are heated to, while vacuumizing and reaching 30kPa, keeps the temperature 20min, 85g chlorinated paraffin cp42 are then added, restores normal pressure 85 DEG C of reaction 60min of heat preservation, product is cooled to room temperature, 0.6g high temperature resistant hydroxy silicon oils are added, are ground in planetary ball mill 2.0h is ground, expanded graphite supporting chlorinated paraffin is obtained;
(2) 40gPEG- melamines copolymer resins, 3.2g are loaded into the expanded perlite of ammonium polyphosphate, 3.2g loads chlorine The expanded graphite of fossil waxes, 2.4g dipentaerythritols, 0.8g melamines, 8g nano-stannic oxides, 5g titanium dioxides, 4g silicon ashes Stone, 2.5g aluminium powders, 1.2g polyoxyethylene oleic acid esters, 0.16g organic silicon defoamers, 0.8g hydroxy silicon oils, 0.16g amino silicones Oil, 0.04g zinc Isoocatanoates, 1.6g Degussa TS100 flatting silicas, 0.04g modified polydimethyls polysiloxanes, 0.12gC1214 fat Fat alcohol phosphate was uniformly mixed with 0.4g days nation 4010T, and 6.0h is ground in planetary ball mill, is crossed 400 mesh sieve, is obtained component A;
(3) after mixing 50g components A with 50g components B, 15g acetone is added and adjusts viscosity, is existed with high shear agitation machine 1000r/min down cuts are stirred 6min to get to the fire-resistant coating for steel structure of the present embodiment.
Embodiment 2:
The fire-resistant coating for steel structure of decalescence, expandable flame retardant in the present embodiment, component is same as Example 1, no It is that the proportioning between each component is different with place, referring specifically to the usage amount of each raw material in preparation method.
The preparation method of the fire-resistant coating for steel structure of the present embodiment includes the following steps:
(1) with the step (1) in preparation method in embodiment 1;
(2) with the step (2) in preparation method in embodiment 1;
(3) after mixing 45g components A with 55g components B, 15g acetone is added and adjusts viscosity, is existed with high shear agitation machine 1000r/min down cuts are stirred 6min to get to the fire-resistant coating for steel structure of the present embodiment.
Embodiment 3:
The fire-resistant coating for steel structure of decalescence, expandable flame retardant in the present embodiment, component is same as Example 1, no It is that the proportioning between each component is different with place, referring specifically to the usage amount of each raw material in preparation method.
The preparation method of the fire-resistant coating for steel structure of the present embodiment includes the following steps:
(1) with the step (1) in preparation method in embodiment 1;
(2) with the step (2) in preparation method in embodiment 1;
(3) after mixing 55g components A with 45g components B, 15g acetone is added and adjusts viscosity, is existed with high shear agitation machine 1000r/min down cuts are stirred 6min to get to the fire-resistant coating for steel structure of the present embodiment.
Comparative example 1:
The fire-resistant coating for steel structure of this comparative example is the fire-retardant epoxy of ammonium polyphosphate, pentaerythrite and the melamine of routine The manufacturing method of cold coating, the fire-resistant coating for steel structure includes the following steps:(1) by 50g650 Versamids and 50g Epoxy resin E44 mixing, is added 15g acetone, 5g ammonium polyphosphate, 6g pentaerythrites, 2g melamines, with high shear agitation machine 6min is stirred to get to the fire-resistant coating for steel structure in this comparative example in 1000r/min down cuts.
By above example and the obtained fire-resistant coating for steel structure of comparative example, measured at 700 DEG C on thermogravimetric analyzer Residue quality;Expansion multiple is measured using alcohol blast burner flame;On cone calorimetry measure heat release rate peak value pHHR and Cigarette yield;Reference《GB14907-2002 fire-resistant coating for steel structures》Measure fire resistance period;Reference《GB/T5210-2006 colored paints and Varnish pulls open method adhesion test》Measure layer of charcoal adhesive force;Reference《GB/T1040-1992 plastic tensile method for testing performances》It surveys Determine tensile strength and elongation at break.Specific test result is shown in Table 1.
Table 1:The performance parameter of the fire-resistant coating for steel structure obtained in embodiment 1-3 and comparative example 1
By table 1 as it can be seen that the fire-resistant coating for steel structure that embodiment 1, embodiment 2 and embodiment 3 obtain, relative to comparative example 1 For obtained fire-resistant coating for steel structure, 700 DEG C of residual heavy rates, expansion multiple, heat release rate peak value, cigarette yield, fire resistance period, The performance indicators such as adhesive force, tensile strength, elongation at break are significantly improved.

Claims (9)

1. the fire-resistant coating for steel structure of a kind of decalescence, expandable flame retardant, which is characterized in that including component A and component B, with weight Part meter is measured, the component A includes 80-100 parts of base-material and 13-31 parts of fire-proof flame-retarded agent, and the base-material includes PEG- trimerizations Cyanamide copolymer resins, the fire-proof flame-retarded agent include the expansion stone of the expanded perlite and load chlorinated paraffin that load ammonium polyphosphate Ink, the component B includes epoxy resin, and the mass ratio of the component A and component B is (0.8-1.25):1.
2. fire-resistant coating for steel structure according to claim 1, which is characterized in that the fire-proof flame-retarded agent includes following weight The component of part:
3. fire-resistant coating for steel structure according to claim 2, which is characterized in that the component A further includes following parts by weight Auxiliary additive:
4. fire-resistant coating for steel structure according to claim 1 or 2 or 3, which is characterized in that the epoxy resin is asphalt mixtures modified by epoxy resin Fat E44.
5. a kind of preparation method of fire-resistant coating for steel structure as described in claim 3 or 4, which is characterized in that including following step Suddenly:
(1) expansion of PEG- melamines copolymer resins, the expanded perlite and load chlorinated paraffin that load ammonium polyphosphate is prepared Graphite;
(2) by the PEG- melamines copolymer resins being prepared in step (1), load the expanded perlite of ammonium polyphosphate with it is negative The expanded graphite of load chlorinated paraffin is ground up, sieved to obtain component A after mixing with dipentaerythritol, melamine, auxiliary additive;
(3) after mixing component A with component B, diluent is added and adjusts viscosity, stirs the fireproof coating up to steel construction.
6. preparation method according to claim 5, which is characterized in that the preparation side of the PEG- melamines copolymer resins Method includes the following steps:20-30 parts of melamines and 40-60 parts of formaldehyde are added in reaction kettle, adjusting pH value is 6.5-7.5, It is heated to 50-60 DEG C of reaction 20min, adds 40-60 parts of polyethylene glycol PEG-600, adjusting pH value is 4.5-5.0, and reflux is anti- 1.0-2.0h is answered, then steams moisture to get PEG- melamine copolymer resins.
7. preparation method according to claim 5, which is characterized in that the system of the expanded perlite of the load ammonium polyphosphate Preparation Method includes the following steps:20-30 parts of expanded perlites, 12-15 parts of urea and 20-40 parts of phosphoric acid stirrings are milled uniformly, Under protection of ammonia, it is heated to 120-130 DEG C of prepolymerization 20-30min, it is anti-to be then heated to 230-240 DEG C of polymerizing curable 130-160min is answered, product is cooled to room temperature, 0.1-1.0 parts of hydroxy silicon oils are added, 400 mesh sieve is crossed after grinding 1.0-3.0h, Up to the expanded perlite of load ammonium polyphosphate.
8. preparation method according to claim 5, which is characterized in that the preparation of the expanded graphite of the load chlorinated paraffin Method includes the following steps:10-20 parts of expanded graphites are heated to 70-90 DEG C, while vacuumizing and reaching 20-50kPa, are protected Then 80-90 part chlorinated paraffin cp42 are added in warm 10-30min, in 70-90 DEG C of reaction 40-80min under normal pressure, product is cooled down To room temperature, 0.1-1.0 parts of hydroxy silicon oils are added, 1.0-3.0h is to get expanded graphite supporting chlorinated paraffin for grinding.
9. according to the preparation method described in any one of claim 5-8, which is characterized in that in the step (3), the dilution Agent is acetone, and the stirring is to be stirred 5-10min in 600-10000r/min down cuts with high shear agitation machine.
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