CN106752682B - A kind of steel construction epoxy resin expandable fireproof paint and preparation method thereof - Google Patents
A kind of steel construction epoxy resin expandable fireproof paint and preparation method thereof Download PDFInfo
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- CN106752682B CN106752682B CN201611037059.3A CN201611037059A CN106752682B CN 106752682 B CN106752682 B CN 106752682B CN 201611037059 A CN201611037059 A CN 201611037059A CN 106752682 B CN106752682 B CN 106752682B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
- C09D5/185—Intumescent paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a kind of steel construction epoxy resin expandable fireproof paints and preparation method thereof, belong to functional coating.This expanding fire-proof paint is grouped as by two groups of A, B, and wherein component A mainly includes film forming matter, carbonifying catalyst, foaming agent, carbon forming agent, auxiliary agent, solvent, pigments and fillers, and B component mainly includes curing agent, modified polyethyleneimine, solvent, auxiliary agent.Fireproof coating prepared by the present invention uses diethyl phosphite modified polyethyleneimine for fire proofing additive (PEI-DEPP) and compounded technology, effectively improves layer of charcoal expansion multiple and layer of charcoal quality after fireproof coating burning.The coating has excellent fire protecting performance, cohesive force, water resistance, heat resistance energy, corrosion resistance and resistance to acid and alkali, cannot be only used for nigh-level synthesis, applies also for the flameproof protection that offshore equipment and petrochemical industry etc. are in the steel construction of adverse circumstances.
Description
Technical field
The invention belongs to fireproof coating fields, are related to a kind of epoxy resin fireproof coating, are specifically related to a kind of steel construction
With epoxy resin expandable fireproof paint and preparation method thereof.
Background technique
As economic society and science and technology continue to develop, construction material used in the mankind is kept updating.Steel construction is built
Build compared to brick-and-concrete buildings environmental protection, energy conservation, efficiently, in terms of have a clear superiority, thus gradually take
Become main construction style for armored concrete.According to national standard " Code for fire protection design of buildings " GB's 50016-2014
It is required that, it is necessary to flameproof protection is carried out to steel building.Expanding fire-proof paint is used as steel building extensively at present
Fire prevention, expanding fire-proof paint is met expanded foamed after fire, plays the role of anti-flaming thermal-insulation, and when foaming never discharges toxic gas,
Human body is protected not to be poisoned.
Expanding fire-proof paint matrix resin can be divided into thermoplastics type and two kinds of heat curing type, and heat curing type fireproof coating is using double groups
Part system, film forming matter is mostly epoxy resin or polyurethane resin.Two-component generally has preferable chemical corrosion resistance, heat-resisting
Property, resistance to acid and alkali and closure.Flame-retardant system is also not easy to move to coating surface, and fire protecting performance is relatively stable, not vulnerable to the time
With the influence of environment.Two-component fireproof coating foamed char intensity is high, can provide effective flameproof protection.
It is many to the report of fire-resistant coating for steel structure in recent years, but for the research of response type self-expanding fire proofing additive, specially
Benefit report is simultaneously few.Chinese patent CN102634264A has synthesized a kind of aqueous phosphate phenyl ester 2-glycidyl ester, then by this
Kind compound is used to prepare Waterborne phosphorus-containinepoxy epoxy resin fireproof coating, when coating layer thickness is 1.0mm when cured, is coated with fire prevention and applies
The three-ply board of material is endurable to burn the time up to one hour, and LOI is also up to 42.Chinese patent CN105585931A is by using diethanol
Amine to epoxy resin modification, be then respectively adopted phosphoric acid-phosphorus pentoxide-urea, phosphoric acid-urea, ammonium polyphosphate-urea with
Modified epoxy resin reaction, synthesizes a kind of water-soluble poly ammonium phosphate ester fire retardant, and novel high-performance is made
Fireproof coating, the resistance to combustion time is up to 60min.The fire prevention that Chinese patent CN104845490A is prepared for addition new flame retardant applies
Material, fire retardant includes antimony oxide, ammonium sulfate, magnesium hydroxide, citric acid and diatomite.Chinese patent CN104804594A system
For a kind of fire-resistant coating for steel structure, addition type expansible graphite, chlorinated paraffin and titanium dioxide are used, coating layer thickness is worked as
Its fire endurance of 2.2mm is up to 100min.
Existing patent, fire-resistant coating for steel structure reported in the literature are primarily present following problems:
1) fire proofing additive being added all is addition type, and as time goes by, fire proofing additive is easy to run off, thus will lead to fire prevention
Performance decline.
2) fire proofing additive additive amount is larger, reduce coating intensity and other physicochemical properties.
3) fireproof coating water resistance and heat resistance, corrosion resistance are poor, and addition type fire proofing additive is easy sedimentation, can shadow
Ring fire protecting performance.
Summary of the invention
Present invention seek to address that the deficiency of existing fire-resistant coating for steel structure, proposes a kind of steel construction epoxy expansion
Type fireproof coating and preparation method thereof.
The specific formula of steel construction epoxy resin expandable fireproof paint of the present invention such as table 1:
The component and mass fraction of the steel construction epoxy resin expandable fireproof paint of the invention of table 1
| Component A | Content (wt%) | B component | Content (wt%) |
| Epoxy resin | 21~28 | Curing agent | 35~53 |
| Carbonifying catalyst | 25~30 | Modified polyethyleneimine | 18~54 |
| Foaming agent | 10~17 | Auxiliary agent | 0~6 |
| Carbon forming agent | 8~11 | Pigments and fillers | 0~15 |
| Pigments and fillers | 2~7 | Solvent | 5~18 |
| Expansible graphite | 2~3 | ||
| Auxiliary agent | 0~6 | ||
| Solvent | 11~18 |
The epoxy resin be bisphenol A type epoxy resin or bisphenol f type epoxy resin, epoxide number be 0.1~0.56 it
Between.
The carbonifying catalyst includes the ammonium polyphosphate and melamine phosphate that mass ratio is 2~3:1.
The foaming agent includes the melamine and urea that mass ratio is 1.9~3:1.
The carbon forming agent includes the pentaerythrite and mannitol that mass ratio is 1.4~2:1.
The pigments and fillers include that mass ratio is 0.9~1.1:0.9~1.1:0.9~1.1 titanium dioxide, zinc borate and hydrogen
Aluminium oxide.
The expansible graphite mesh number is 80~200 mesh.
The auxiliary agent according to the mass fraction, including 0~1.0 part of dispersing agent, 0~1.0 part of defoaming agent, levelling agent 0~1.0
Part, 0~0.6 part of anti-settling agent；The dispersing agent is the solution B YK- of Germany Bi Ke low molecular weight unsaturation polycarboxylic acid polymers
P104, defoaming agent are Germany Bi Ke brokenly bubble polysiloxane solution BYK-066N, and levelling agent is polyether-modified dimethyl silicone polymer
Copolymer BYK-333, anti-settling agent are Germany Bi Ke modified urea solution B YK-410.
The solvent is the mixing of dimethylbenzene, n-butanol and butyl acetate, wherein dimethylbenzene, n-butanol and butyl acetate
Mass ratio is 2.9~3.1:1.9~2.1:1.
The curing agent viscosity is low, toughness is high, curing rate is moderate, for example, curing agent select polyamide, diethylenetriamine,
At least one of triethylene tetramine.
The modified polyethyleneimine (PEI-DEPP) is used as fire proofing additive therein, and chemical structural formula is as follows:
Wherein n is the degree of polymerization, n=1~140.
The modified polyethyleneimine the preparation method comprises the following steps: polyethyleneimine, diethyl phosphite and methylene chloride are mixed
It closes, at 0~5 DEG C, carbon tetrachloride and triethylamine is added dropwise；The polyethyleneimine molecular weight is 600~70000, and polyethylene
The molar ratio of amido and diethyl phosphite, carbon tetrachloride, triethylamine in imines (18~20mmol/g of amine value) is 1.8~2:
0.8~1.2:1~1.4:1~1.4, preferably 1.8~2:1:1.2:1.2；The dosage of the methylene chloride is poly- in mass ratio
1.3~1.5 times of aziridine quality；Reaction 10~for 24 hours after, remove solvent, obtain crude product；Crude product is removed into impurity,
Freeze-drying is to get modified polyethyleneimine.
The preparation method of the steel construction epoxy resin expandable fireproof paint, its step are as follows:
1) by the proportion in the component A, epoxy resin is dissolved in solvent, add carbonifying catalyst, at
Charcoal agent, foaming agent, expansible graphite, pigments and fillers are uniformly mixed, and auxiliary agent is added, is fully ground to get component A；
2) by the proportion in the B component, curing agent and modified polyethyleneimine is dissolved in solvent, face is added and fills out
Material and auxiliary agent are uniformly mixed, are fully ground to get B component.
The steel construction epoxy resin expandable fireproof paint, before use, A, B component 2~5:1 in mass ratio are mixed
Stirring is closed, can be constructed using the method that spraying, brushing, trowel apply.
Compared with prior art the invention has the following advantages that
1) modified polyethyleneimine synthesized by is a kind of Halogen and has the branched chain type macromolecular of higher phosphorous nitrogen content to prevent fires
Auxiliary agent.
2) fire proofing additive (PEI-DEPP) contains multiple active amine sites, can be used as response type fire proofing additive, and can
As epoxy resin toughener, not only enhance coating fire protecting performance, but also does not influence its mechanical performance.
3) fire proofing additive (PEI-DEPP) collects acid source, gas source, carbon source " three-source integrated ": wherein polyethyleneimine height is nitrogenous
Amount plays the role of action of gas source, and " phosphorous acid structure " plays the acid source, " diethylester on diethyl phosphite in diethyl phosphite
Group " plays the role of carbon source, and the response type fire proofing additive fire protection efficiency is high, and preparation method is easy, and raw material is cheap, and yield is higher,
It can carry out commercial industries.
4) in epoxy resin expandable fireproof paint of the invention, component A is using epoxy resin as main film forming substance, addition
The intumescent system of ammonium polyphosphate, melamine phosphate, melamine, urea and pentaerythrite, mannitol composition, then adding can be swollen
Zinc borate and aluminium hydroxide is added as fire retardant and smoke suppressant, by dividing to improve layer of charcoal quality in swollen graphite and titanium dioxide
Powder, anti-settling agent, defoaming agent and levelling agent improve the storage stability of coating；B component mainly has curing agent, modified poly ethylene sub-
Amine fire proofing additive, pigments and fillers, solvent and various auxiliary agents.A, when two component of B is used in mixed way, can generate excellent fire protecting performance and
Physicochemical property, the flameproof protection of the offshore equipment more severe suitable for environment and steel construction.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the fire proofing additive PEI-DEPP's synthesized in embodiment 11HNMR nuclear magnetic spectrogram.
Fig. 2 is polyethyleneimine PEI's1HNMR nuclear magnetic spectrogram.
Fig. 3 is diethyl phosphite1HNMR nuclear magnetic spectrogram.
Fig. 4 is the comparison photo for the fireproof coating burning front and back that embodiment 1 obtains.
Specific embodiment
The contents of the present invention are illustrated below by embodiment:
Embodiment 1:
Step 1: preparing modified polyethyleneimine fire proofing additive
Polyethyleneimine (PEI), the 138g phosphorous acid diethyl that 100g molecular weight is 600~70000 are added in a kettle
Under condition of ice bath 185g carbon tetrachloride and 122g triethylamine is added dropwise, reaction is for 24 hours in ester and 100ml methylene chloride in 6h
Afterwards, revolving obtains crude product.Product is dissolved in 500ml distilled water, dialysis removes impurity, and then freeze-drying obtains final product
Modified polyethyleneimine (PEI-DEPP).
By Fig. 1's1HNMR nuclear magnetic spectrogram and Fig. 2, Fig. 3, which are compared, visible occurs the amine of polyethyleneimine PEI in 2~3ppm
Base proton peak, 7.66ppm and the 5.93ppm but not no P-H proton peak of diethyl phosphite, and respectively in 1.23ppm and
Occur the methyl of diethyl phosphite and the peak of methylene at 3.91ppm.Illustrate the successful synthesis of fire proofing additive PEI-DEPP.
Step 2: 480g epoxy resin is dissolved in the solvent that 130g dimethylbenzene, 87g n-butanol, 43g butyl acetate mix
In, add carbonifying catalyst i.e. 380g ammonium polyphosphate and 190g melamine phosphate, foaming agent, that is, 217g melamine
With 109g urea, carbon forming agent, that is, 122g pentaerythrite and 82g mannitol, 41g expansible graphite, pigments and fillers, that is, 40g titanium dioxide,
Then 40g zinc borate and 40g aluminium hydroxide, mixing are added in material-compound tank, stir evenly 30min with high speed disperser dispersion, add
Enter auxiliary agent (20g dispersant B YK-P104,15g defoaming agent BYK-066N, 15g levelling agent BYK-333,10g anti-settling agent BYK-
410) it, then with three-roll grinder (or ball mill or sand mill) carries out being fully ground 2h, sieving is after discharging to get component A.
Step 3: the modified polyethyleneimine that 350g curing agent polyamide and 200g step 1 obtain is dissolved in 45g diformazan
In the solvent that benzene, 30g n-butanol, 15g butyl acetate mix, pigments and fillers i.e. 10g titanium dioxide, 10g zinc borate, 10g are added
Aluminium hydroxide and auxiliary agent (6g dispersant B YK-P104,5g defoaming agent BYK-066N, 5g levelling agent BYK-333,4g anti-settling agent BYK-
410), then high speed dispersion stirs 30min, then carries out being fully ground 1h with three-roll grinder (or ball mill or sand mill), out
Sieving is after material to get B component.
Step 4: the ratio mixing of two component of used time A, B 4.5:1 in mass ratio is to get fireproof coating, spraying, brushing or trowel
Tu Junke.
Gained fireproof coating all technical by standard GB/T 14907-2002 " fire-resistant coating for steel structure " requirement
Tested, fire protecting performance: coating layer thickness 1.92mm (Fig. 4 is right), charcoal layer height is 4.32cm (Fig. 4 is left), fire resisting pole after expansion
Limit 143.3min；Remaining the results are shown in Table 2.
The main performance index of the epoxy resin expandable fireproof paint of 2 embodiment 1 of table
Embodiment 2:
Step 1: preparing modified polyethyleneimine fire proofing additive
In a kettle be added 100g molecular weight be 600~70000 polyethyleneimine, 125g diethyl phosphite and
185g carbon tetrachloride and 122g triethylamine is added dropwise under condition of ice bath in 100ml methylene chloride in 6h, after reaction for 24 hours, revolving
Obtain crude product.Product is dissolved in 500ml distilled water, dialysis removes impurity, and then it is modified poly- to obtain final product for freeze-drying
Aziridine.
Step 2: 450g epoxy resin is dissolved in the solvent that 120g dimethylbenzene, 80g n-butanol, 40g butyl acetate mix
In, add carbonifying catalyst i.e. 340g ammonium polyphosphate and 170g melamine phosphate, foaming agent, that is, 190g melamine
With 95g urea, carbon forming agent, that is, 120g pentaerythrite and 60g mannitol, 41g expansible graphite, pigments and fillers, that is, 30g titanium dioxide, 30g
Then zinc borate and 30g aluminium hydroxide, mixing are added in material-compound tank, stir evenly 30min with high speed disperser dispersion, be added
Auxiliary agent (15g dispersant B YK-P104,15g defoaming agent BYK-066N, 12g levelling agent BYK-333,6g anti-settling agent BYK-410), then
It carries out being fully ground 2h with three-roll grinder (or ball mill or sand mill), sieving is after discharging to get component A.
Step 3: the modified polyethyleneimine that 380g curing agent polyamide and 180g step 1 obtain is dissolved in 39g diformazan
In the solvent that benzene, 26g n-butanol, 13g butyl acetate mix, pigments and fillers i.e. 30g titanium dioxide, 30g zinc borate, 30g are added
Aluminium hydroxide and auxiliary agent (8g dispersant B YK-P104,15g defoaming agent BYK-066N, 12g levelling agent BYK-333,10g anti-settling agent
BYK-410), then high speed dispersion stirs 30min, then is fully ground with three-roll grinder (or ball mill or sand mill)
1h, sieving is after discharging to get B component.
Step 4: the ratio mixing of two component of used time A, B 4:1 in mass ratio applies to get fireproof coating, spraying, brushing or trowel
?.
Gained fireproof coating all technical by standard GB/T 14907-2002 " fire-resistant coating for steel structure " requirement
It is tested, fire protecting performance: coating layer thickness 1.89mm, fire endurance 110.2min；Remaining the results are shown in Table 3.
The main performance index of the epoxy resin expandable fireproof paint of 3 embodiment 2 of table
| Inspection project | Inspection result |
| State in a reservoir | It meets the requirements |
| Drying time (surface drying)/h | 4.5 |
| Initial dry cracking resistance | Flawless |
| Appearance and color | It meets the requirements |
| Adhesion strength/MPa | 0.52 |
| Vibration resistance | It meets the requirements |
| Flexing resistance | It meets the requirements |
| Hot/the h of resistance to exposure | >=720 coatings without aliquation, fall off, hollowing, cracking phenomena |
| Humidity resistance/h | >=504 coatings are without aliquation, obscission |
| Freeze-thawing resistant cyclicity/time | >=15 coatings are without cracking, fall off, foaming phenomena |
| Acid resistance/h (3%HCl solution) | >=360 coatings without aliquation, fall off, cracking phenomena |
| Alkali resistance/h (3% ammonia spirit) | >=360 coatings without aliquation, fall off, cracking phenomena |
| Salt fog resistance/time | >=30 coatings are without blistering, it will be apparent that rotten, ruckbildung |
| Fire resistance | Coating layer thickness 1.89mm, fire endurance 110.2min |
Embodiment 3:
Step 1: preparing modified polyethyleneimine fire proofing additive
In a kettle be added 100g molecular weight be 600~70000 polyethyleneimine and 138g diethyl phosphite with
And 185g carbon tetrachloride and 122g triethylamine is added dropwise under condition of ice bath in 100ml methylene chloride in 6h, and after reaction for 24 hours, rotation
Steaming obtains crude product.Product is dissolved in 500ml distilled water, dialysis removes impurity, and then it is modified to obtain final product for freeze-drying
Polyethyleneimine.
Step 2: 600g epoxy resin is dissolved in the solvent that 141g dimethylbenzene, 94g n-butanol, 47g butyl acetate mix
In, add carbonifying catalyst i.e. 420g ammonium polyphosphate and 210g melamine phosphate, foaming agent, that is, 180g melamine
With 90g urea, carbon forming agent and 140g pentaerythrite and 70g mannitol, 50g expansible graphite, pigments and fillers, that is, 45g titanium dioxide, 45g
Then zinc borate and 45g aluminium hydroxide, mixing are added in material-compound tank, stir evenly 30min with high speed disperser dispersion, be added
Auxiliary agent (25g dispersant B YK-P104,18g defoaming agent BYK-066N, 18g levelling agent BYK-333,14g anti-settling agent BYK-410),
It carries out being fully ground 2h with three-roll grinder (or ball mill or sand mill) again, sieving is after discharging to get component A.
Step 3: the modified polyethyleneimine that 150g curing agent polyamide and 180g step 1 obtain is dissolved in 30g diformazan
In the solvent that benzene, 20g n-butanol, 10g butyl acetate mix, pigments and fillers i.e. 15g titanium dioxide, 15g zinc borate, 15g are added
Aluminium hydroxide and auxiliary agent (5g dispersant B YK-P104,5g defoaming agent BYK-066N, 5g levelling agent BYK-333,5g anti-settling agent BYK-
410), then high speed dispersion stirs 30min, then carries out being fully ground 1h with three-roll grinder (or ball mill or sand mill), out
Sieving is after material to get B component.
Step 4: the ratio mixing of two component of used time A, B 2.5:1 in mass ratio is to get fireproof coating, spraying, brushing or trowel
Tu Junke.
Gained fireproof coating all technical by standard GB/T 14907-2002 " fire-resistant coating for steel structure " requirement
It is tested, fire protecting performance: coating layer thickness 2.04mm, fire endurance 120.8min；Remaining the results are shown in Table 4.
The main performance index of the epoxy resin expandable fireproof paint of 4 embodiment 3 of table
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (10)
1. a kind of steel construction epoxy resin expandable fireproof paint, it is characterised in that: including component A and B component, wherein A group
Divide according to the mass fraction, comprising: 21~28 parts of epoxy resin, 25~30 parts of carbonifying catalyst, 11~17 parts of foaming agent, at
8~11 parts of charcoal agent, 2~7 parts of pigments and fillers, 2~3 parts of expansible graphite, 0~6 part of auxiliary agent, 11~18 parts of solvent；B component presses quality
Number meter, comprising: 35~53 parts of curing agent, 18~54 parts of modified polyethyleneimine, 0~6 part of auxiliary agent, 0~15 part of pigments and fillers, molten
5~18 parts of agent, the modified polyethyleneimine chemical structural formula is as follows:
Wherein, n is the degree of polymerization, n=1~140；
Two component of used time A, B, the ratio of 2~5:1 in mass ratio is used in mixed way.
2. steel construction epoxy resin expandable fireproof paint as described in claim 1, it is characterised in that: the epoxy resin
For bisphenol A type epoxy resin or bisphenol f type epoxy resin, epoxide number is between 0.1~0.56.
3. steel construction epoxy resin expandable fireproof paint as described in claim 1, it is characterised in that described to be dehydrated into charcoal
Catalyst includes the ammonium polyphosphate and melamine phosphate that mass ratio is 2~3:1；The foaming agent include mass ratio be 1.9~
The melamine and urea of 3:1；The carbon forming agent includes the pentaerythrite and mannitol that mass ratio is 1.4~2:1；The pigments and fillers
It is 0.9~1.1:0.9~1.1:0.9~1.1 titanium dioxide, zinc borate and aluminium hydroxide including mass ratio；It is described inflatable
Graphite mesh number is 80~200 mesh.
4. steel construction epoxy resin expandable fireproof paint as described in claim 1, it is characterised in that: the auxiliary agent presses matter
Measure number meter, including 0~1.0 part of dispersing agent, 0~1.0 part of defoaming agent, 0~1.0 part of levelling agent, 0~0.6 part of anti-settling agent；It is described
Dispersing agent is the solution of low molecular weight unsaturation polycarboxylic acid polymers, and defoaming agent is brokenly bubble polysiloxane solution, and levelling agent is
Polyether-modified Dimethicone Copolyol body, anti-settling agent are modified urea solution.
5. steel construction epoxy resin expandable fireproof paint as described in claim 1, it is characterised in that: the solvent is two
The mixing of toluene, n-butanol and butyl acetate, wherein the mass ratio of dimethylbenzene, n-butanol and butyl acetate is 2.9~3.1:1.9
~2.1:1.
6. steel construction epoxy resin expandable fireproof paint as described in claim 1, it is characterised in that: the curing agent is
At least one of polyamide, diethylenetriamine, triethylene tetramine.
7. a kind of preparation method of steel construction epoxy resin expandable fireproof paint described in claim 1, it is characterised in that:
Include:
1) by the proportion in the component A, epoxy resin is dissolved in solvent, add carbonifying catalyst, carbon forming agent,
Foaming agent, expansible graphite, pigments and fillers are uniformly mixed, and auxiliary agent is added, is fully ground to get component A；
2) by the proportion in the B component, curing agent and modified polyethyleneimine are dissolved in solvent, add pigments and fillers and
Auxiliary agent is uniformly mixed, is fully ground to get B component.
8. the preparation method of steel construction epoxy resin expandable fireproof paint according to claim 7, it is characterised in that:
The modified polyethyleneimine the preparation method comprises the following steps: by the polyethyleneimine of 18~20mmol/g of amine value, diethyl phosphite and
Carbon tetrachloride and triethylamine is added dropwise at 0~5 DEG C in methylene chloride mixing；The polyethyleneimine molecular weight be 600~
70000, and the molar ratio of the amido in polyethyleneimine and diethyl phosphite, carbon tetrachloride, triethylamine is 1.8~2:0.8
~1.2:1~1.4:1~1.4；The dosage of the methylene chloride is 1.3~1.5 times of polyethyleneimine quality in mass ratio；Instead
Answer 10~for 24 hours after, remove solvent, obtain crude product；Crude product is removed into impurity, is lyophilized to get modified polyethyleneimine.
9. a kind of epoxy resin expandable fireproof paint fire proofing additive, it is characterised in that: the fire proofing additive is modified poly ethylene
Imines, chemical structural formula are as follows:
Wherein, n is the degree of polymerization, n=1~140.
10. a kind of preparation method of epoxy resin expandable fireproof paint fire proofing additive as claimed in claim 9, feature exist
In: the polyethyleneimine, diethyl phosphite and methylene chloride of 18~20mmol/g of amine value are mixed, at 0~5 DEG C, are added dropwise
Carbon tetrachloride and triethylamine；The polyethyleneimine molecular weight is 600~70000, and amido and phosphorous in polyethyleneimine
Diethyl phthalate, carbon tetrachloride, triethylamine molar ratio be 1.8~2:0.8~1.2:1~1.4:1~1.4；The methylene chloride
Dosage be in mass ratio 1.3~1.5 times of polyethyleneimine quality；Reaction 10~for 24 hours after, remove solvent, obtain crude product；
Crude product is removed into impurity, is lyophilized to get modified polyethyleneimine.
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| CN201611037059.3A CN106752682B (en) | 2016-11-23 | 2016-11-23 | A kind of steel construction epoxy resin expandable fireproof paint and preparation method thereof |
| PCT/CN2017/112583 WO2018095361A1 (en) | 2016-11-23 | 2017-11-23 | Epoxy-resin intumescent fire-resistant coating for steel structure use, and method for fabrication thereof |
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| CN106752682B (en) * | 2016-11-23 | 2019-06-14 | 厦门大学 | A kind of steel construction epoxy resin expandable fireproof paint and preparation method thereof |
| CN108559359B (en) * | 2018-04-25 | 2020-07-31 | 中南林业科技大学 | Phase-change heat-absorbing and expansion flame-retardant steel structure fireproof coating and preparation method thereof |
| CN109749682A (en) * | 2018-12-25 | 2019-05-14 | 中国人民解放军海军工程大学 | A kind of flame retardant epoxy adhesive peculiar to vessel |
| ES2907062T3 (en) * | 2019-03-22 | 2022-04-21 | Hilti Ag | Fire protection composition and its use |
| ES2907060T3 (en) * | 2019-03-22 | 2022-04-21 | Hilti Ag | Fire protection composition and its use |
| CN113217077B (en) * | 2021-05-07 | 2024-03-29 | 湖南红森科技有限公司 | Construction method of tunnel fireproof coating |
| CN114904739B (en) * | 2022-06-16 | 2023-04-14 | 广东百安环保新材料有限公司 | Water-based fireproof coating for steel structure and preparation method thereof |
| CN114922066A (en) * | 2022-07-08 | 2022-08-19 | 上海岐海防腐工程技术有限公司 | Anticorrosive fireproof bridge cable |
| CN115626985B (en) * | 2022-09-23 | 2023-09-05 | 浙大宁波理工学院 | Mo-based polymer and preparation method and application thereof |
| CN116925497A (en) * | 2023-07-21 | 2023-10-24 | 广州润泰新材料科技有限公司 | Novel fireproof material and preparation method and application thereof |
| CN116970325B (en) * | 2023-09-22 | 2023-11-24 | 潍坊市兴源防水材料股份有限公司 | Building fireproof paint and preparation method thereof |
| CN117467332A (en) * | 2023-11-24 | 2024-01-30 | 上海中南建筑材料有限公司 | Waterproof aerogel fireproof coating and preparation method and application thereof |
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| CN103805033A (en) * | 2014-02-25 | 2014-05-21 | 绵阳惠利环氧工程有限公司 | Ultrathin expansion steel structure fireproof coating and preparation method thereof |
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| US20160168393A1 (en) * | 2014-12-12 | 2016-06-16 | United States Mineral Products Company | Intumescent Coating |
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| CN106752682B (en) * | 2016-11-23 | 2019-06-14 | 厦门大学 | A kind of steel construction epoxy resin expandable fireproof paint and preparation method thereof |
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| CN103740231A (en) * | 2013-12-26 | 2014-04-23 | 中盈长江国际新能源投资有限公司 | Water-based expansive type nano fireproof coating for cable and preparation method thereof |
| CN103805033A (en) * | 2014-02-25 | 2014-05-21 | 绵阳惠利环氧工程有限公司 | Ultrathin expansion steel structure fireproof coating and preparation method thereof |
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