CN108410352A - A kind of waterborne thin fire retardant coating for steel structure, fire-proof mud and preparation method thereof - Google Patents
A kind of waterborne thin fire retardant coating for steel structure, fire-proof mud and preparation method thereof Download PDFInfo
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- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- 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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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention provides a kind of waterborne thin fire retardant coating for steel structure, fire-proof mud and preparation method thereof, belong to fire proofing material field.The fireproof coating includes the fire-proof mud being used cooperatively and fire-resistant fluid；Fire-proof mud includes：Aggregate, powdered biomass, graphite, toughener, methyl cellulose ether, nano silicon dioxide, oxidized starch and dipentaerythritol；Fire-resistant fluid includes：Inorganic silicon fire retardant, waterproofing agent, wetting agent, dispersant, antifoaming agent, sodium methyl silicate.After the spraying of this waterborne thin fire retardant coating for steel structure; when the film layer on steel structure material surface, which meets fiery high temperature, to be roasted; fire resistant coating swells rapidly oxygen-free atmosphere bubble; form multilayer " the high-density hard putaminas of more raw copolymerization of charcoal connection "; it can effectively stop flame calcination steel structure material, and prolonged thermal insulation protection is formed to steel construction.Meanwhile the fire resistant coating obtained after application, cohesive force is high, intensity is big, scratch-resistant, impact resistant.
Description
Technical field
The present invention relates to fire proofing material fields, in particular to a kind of waterborne thin fire retardant coating for steel structure, fire-proof mud
And preparation method thereof.
Background technology
The excellent specific properties such as steel construction has both high slight, light weight, assembly is simple, speed of application is fast, shock resistance is good, by more next
It is more widely used in public building and civil buildings, especially on some Super Highs or public building compared with large span
Display has also obtained extensive development in addition to great advantage, current fabricated steel building.Very important is steel knot
The fire resistance of structure, since steel construction is when own temperature reaches 538 DEG C, mechanical strength declines rapidly, easily collapses.Largely
Experiment shows that in the case of fire prevention measure, steel construction is only capable of ensureing that it carries energy the 15-20 minutes after fire occurs Nei
Power, it is therefore necessary to which measurements for fire-protection is carried out to steel structure surface.
Common mode is to play the effect of fire-proof and thermal-insulation in steel structure surface brushing fireproof coating, can be in 30-
Ensure the bearing capacity of steel construction in 180min.Mainly there are non-expansion type and expanding fire-proof paint, expansion fire-proof to apply at present
Material state when not heated is normal, is passively expanded when heated, plays the role of protecting steel construction.Early stage people mainly use solvent
The expanding fire-proof paint of type, the attention with countries in the world to environmental problem, Water-borne inflation type refractory coating are applied to more
In more case histories.
However, preferable product in current fireproof coating, fire endurance is not high, and fire protecting performance is not ideal enough and aqueous viscous
It is smaller to tie power, factory's pre-coating can not be carried out, if falling off for fire resistant coating in transit can be caused after carrying out engineering pre-coating.
In consideration of it, the present invention provides the fireproof coating that a kind of fire endurance is high, cohesive force is strong.
Invention content
The first object of the present invention is to provide a kind of waterborne thin fire retardant coating for steel structure and preparation method thereof, it is intended to solve
The problem that the fire endurance of fireproof coating certainly in the prior art is low, cohesive force is weak.
The second object of the present invention is to provide a kind of water thin steel structure fireproofing mud, for modulating above-mentioned water thin
Fire-resistant coating for steel structure.
In order to realize that the above-mentioned purpose of the present invention, spy use following technical scheme：
A kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud and fire-resistant fluid being used cooperatively；
Fire-proof mud is counted in parts by weight：13~24 parts of aggregate, 4~7 parts of powdered biomass, 2~4 parts of graphite, toughening
2~4 parts of agent, 1~3 part of methyl cellulose ether, 0.5~1.5 part of nano silicon dioxide, 2~4 parts of oxidized starch and double Ji Wusi
4~6 parts of alcohol；
Fire-resistant fluid is counted in parts by weight：35~45 parts of inorganic silicon fire retardant, 14~17 parts of waterproofing agent, wetting agent 0.1
~0.3 part, 0.4~0.6 part of dispersant, 0.1~0.3 part of antifoaming agent, 3~5 parts of sodium methyl silicate.
A kind of preparation method of above-mentioned fireproof coating comprising：
In parts by weight, by aggregate, powdered biomass, graphite, toughener, methyl cellulose ether, nano silicon dioxide, oxygen
Change starch, dipentaerythritol mixing, obtains fire-proof mud；
In parts by weight, inorganic silicon fire retardant, waterproofing agent, wetting agent, dispersant, antifoaming agent and sodium methyl silicate are mixed
It closes, obtains fire-resistant fluid；
By fire-proof mud and fire-resistant fluid according to mass ratio 1：0.8~1.2 mixing.
A kind of water thin steel structure fireproofing mud, in parts by weight meter include：13~24 parts of aggregate, powdered biomass 4
~7 parts, 2~4 parts of graphite, 2~4 parts of toughener, 0.5~1.5 part of nano silicon dioxide, 1~3 part of methyl cellulose ether, oxidation
4~6 parts of 2~4 parts of starch and dipentaerythritol.
Compared with prior art, beneficial effects of the present invention for example including：
This waterborne thin fire retardant coating for steel structure provided by the invention is mutually tied using aqueous inorganic material with organic material
The mode of conjunction improves the cohesive force of coating.It uses inorganic expansive material (such as inorganic silicon fire retardant) to be main fire-retardant
Material, hard inorganic foamed layer can be formed by being scorched through flame, it is possible to prevente effectively from the breakdown of organic carbon-coating or falling off；It is added
Environmentally protective nanometer silicon dioxide material expand form dense mesh expander skeleton at high temperature, can effectively enhance inorganic
Expanding layer.Biomass natural powder is added in carbon-coating compounding and organic at carbonizable substance (such as graphite, dipentaerythritol and oxidation shallow lake
Powder etc.), tiny carbon-coating cavity is formed in inorganic spray Zhang Tizhong, can effectively obstruct the conduction of temperature.
Steel structure material surface coating layer after the spraying of this waterborne thin fire retardant coating for steel structure is met fiery high temperature and is roasted
When, fire resistant coating swells rapidly oxygen-free atmosphere bubble, forms multilayer " the high-density hard putaminas of more raw copolymerization of charcoal connection ", can effectively hinder
Flame calcination steel structure material is kept off, prolonged thermal insulation protection is formed to steel construction.Meanwhile the fire resistant coating obtained after application,
Cohesive force height, intensity height, scratch-resistant, impact resistant are suitble to Gang Gou factories as assembled steel component pre-coating.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising (A) fire-proof mud that is used cooperatively and
(B) fire-resistant fluid, i.e., before use, fire-proof mud and fire-resistant fluid are mixed evenly at room temperature.
Wherein, (A) fire-proof mud is counted in parts by weight includes：13~24 parts of aggregate, 4~7 parts of powdered biomass, graphite 2~4
Part, 2~4 parts of toughener, 1~3 part of methyl cellulose ether, 0.5~1.5 part of nano silicon dioxide, 2~4 parts of oxidized starch and
4~6 parts of dipentaerythritol.
Alternatively, fire-proof mud is counted in parts by weight includes：17~19 parts of aggregate, 5~6 parts of powdered biomass, graphite 2.5~
3.5 parts, 2.7~3.2 parts of toughener, 1.4~2.8 parts of methyl cellulose ether, 0.7~1.3 part of nano silicon dioxide, oxidized starch
2.4~3.3 parts and 4.7~5.4 parts of dipentaerythritol.
Alternatively, fire-proof mud is counted in parts by weight includes：18.5 parts of aggregate, 5.5 parts of powdered biomass, 3 parts of graphite, toughener
5 parts of 3 parts, 2 parts of methyl cellulose ether, 1 part of nano silicon dioxide, 3 parts of oxidized starch and dipentaerythritol.
Further, aggregate includes the following component counted in parts by weight：3~6 parts of diatomite, 4~7 parts of bentonite, violet
2~3 parts of 1~3 part of bluestone powder, swelling perlite powder 3~5 and aquamaine mountain flour.
Alternatively, aggregate is counted in parts by weight includes：4~5 parts of diatomite, 4~5 parts of bentonite, cordierite powder 1.5~2.5
2.5~3 parts of part, swelling perlite powder 3~4 and aquamaine mountain flour.
Further, toughener is macromolecule solubility rubber powder, and the macromolecule solubility rubber powder includes polyvinyl alcohol, gathers
Ethylene oxide and hydroxypropyl methyl cellulose.
Further, powdered biomass includes plant straw powder or wood powder.
(B) fire-resistant fluid is counted in parts by weight includes：35~45 parts of inorganic silicon fire retardant, 14~17 parts of waterproofing agent, wetting agent
0.1~0.3 part, 0.4~0.6 part of dispersant, 0.1~0.3 part of antifoaming agent, 3~5 parts of sodium methyl silicate.
Alternatively, fire-resistant fluid is counted in parts by weight includes：38~42 parts of inorganic silicon fire retardant, 15~16 parts of waterproofing agent, wetting
0.15~0.25 part of agent, 0.45~0.55 part of dispersant, 0.15~0.25 part of antifoaming agent, 3~4 parts of sodium methyl silicate.
Alternatively, fire-resistant fluid is counted in parts by weight includes：40 parts of inorganic silicon fire retardant, 15.6 parts of waterproofing agent, wetting agent 0.2
Part, 0.5 part of dispersant, 0.2 part of antifoaming agent, 3.5 parts of sodium methyl silicate.
Further, waterproofing agent is organic siliconresin.
Further, wetting agent is anionic surfactant, and the anionic surfactant includes by alkyl
It is selected in the group of sulfate, sulfonate, aliphatic acid or aliphatic ester sulfate and phosphate composition at least one.
Further, dispersant includes the group being made of calgon, sodium tripolyphosphate, sodium pyrophosphate and waterglass
Middle selection it is at least one.
Further, antifoaming agent includes silicone emulsion, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxy
It is selected in the group of propylene polyoxyethylene glycerol ether composition at least one.
Present embodiment further provides for a kind of preparation method of above-mentioned fireproof coating comprising：
In parts by weight, by aggregate, powdered biomass, graphite, toughener, methyl cellulose ether, nano silicon dioxide, oxygen
Change starch, dipentaerythritol mixing, obtains fire-proof mud；
In parts by weight, inorganic silicon fire retardant, waterproofing agent, wetting agent, dispersant, antifoaming agent and sodium methyl silicate are mixed
It closes, obtains fire-resistant fluid；
By fire-proof mud and fire-resistant fluid according to mass ratio 1：0.8~1.2 (or 1：0.9~1.1) it mixes.
The coating process of this fireproof coating includes：
A. steel member is derusted decontamination；
B. before use, by fire-proof mud and fire-resistant fluid according to mass ratio 1：0.8~1.2 mixing, being sufficiently stirred can make again
With (preparing fireproof coating by dosage in 4 hours, deployed fireproof coating uses in 4 hours, and time-out can be gradually thickened).
C. by the fireproof coating even application configured in steel structure surface, every time coating weight is 1.1~1.5kg/m2, the
It brushes second time, need to brush altogether three times again after one time surface is solid, coating layer thickness is 5~7mm；Such as day heated drying, primer becomes
It is thick when being not easy to spray, can suitably plus water be stirred for uniformly after use.
D. third must spray cover protective paint or coating after having brushed drying in about 48 hours, and finish or coating use alkali resistant
Coating.
The feature and performance of the present invention are described in further detail with reference to embodiments：
Embodiment 1
The present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud being used cooperatively and fire prevention
Liquid；
Fire-proof mud is counted in parts by weight：13 parts of aggregate, 7 parts of plant straw powder, 4 parts of graphite, macromolecule are soluble
4 parts of 2 parts of rubber powder, 3 parts of methyl cellulose ether, 0.5 part of nano silicon dioxide, 4 parts of oxidized starch and dipentaerythritol；
Fire-resistant fluid is counted in parts by weight：45 parts of inorganic silicon fire retardant, 14 parts of organic siliconresin, anionic surface are lived
0.1 part of agent of property, 0.6 part of sodium tripolyphosphate, 0.3 part of silicone emulsion, 5 parts of sodium methyl silicate.
Preparation method is：Above-mentioned raw materials are mixed respectively, obtain fire-proof mud and fire-resistant fluid, using it is preceding by fire-proof mud and
Fire-resistant fluid is at room temperature according to mass ratio 1：0.8 is mixed evenly.
Embodiment 2
The present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud being used cooperatively and fire prevention
Liquid；
Fire-proof mud is counted in parts by weight：24 parts of aggregate, 4 parts of plant straw powder, 2 parts of graphite, macromolecule are soluble
6 parts of 4 parts of rubber powder, 1 part of methyl cellulose ether, 1.5 parts of nano silicon dioxide, 2 parts of oxidized starch and dipentaerythritol；
Fire-resistant fluid is counted in parts by weight：35 parts of inorganic silicon fire retardant, 17 parts of organic siliconresin, anionic surface are lived
0.3 part of agent of property, 0.4 part of sodium pyrophosphate, 0.1 part of silicone emulsion, 3 parts of sodium methyl silicate.
Preparation method is：Above-mentioned raw materials are mixed respectively, obtain fire-proof mud and fire-resistant fluid, using it is preceding by fire-proof mud and
Fire-resistant fluid is at room temperature according to mass ratio 1：1.2 being mixed evenly.
Embodiment 3
The present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud being used cooperatively and fire prevention
Liquid；
Fire-proof mud is counted in parts by weight：4.8 parts of diatomite, 5.3 parts of bentonite, 2 parts of cordierite powder, expanded perlite
Powder 3.7,2.7 parts of aquamaine mountain flour, 5.5 parts of plant straw powder, 3 parts of graphite, 3 parts of macromolecule solubility rubber powder, methylcellulose
5 parts of 2 parts of ether, 1 part of nano silicon dioxide, 3 parts of oxidized starch and dipentaerythritol.
Fire-resistant fluid is counted in parts by weight：40 parts of inorganic silicon fire retardant, 15.6 parts of organic siliconresin, anionic surface
0.2 part of activating agent, 0.5 part of sodium pyrophosphate, 0.2 part of silicone emulsion, 3.5 parts of sodium methyl silicate.
Preparation method is：Above-mentioned raw materials are mixed respectively, obtain fire-proof mud and fire-resistant fluid, using it is preceding by fire-proof mud and
Fire-resistant fluid is at room temperature according to mass ratio 1：1 is mixed evenly.
Embodiment 4
The present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud being used cooperatively and fire prevention
Liquid；
Fire-proof mud is counted in parts by weight：3 parts of diatomite, 4 parts of bentonite, 3 parts of cordierite powder, swelling perlite powder 3,
3 parts of aquamaine mountain flour, 2.5 parts of graphite, 3.2 parts of macromolecule solubility rubber powder, 1.4 parts of methyl cellulose ether, is received 6 parts of wood powder
5.4 parts of .2 parts of silica 1 of rice, 3.3 parts of oxidized starch and dipentaerythritol.
Fire-resistant fluid is counted in parts by weight：42 parts of inorganic silicon fire retardant, 15 parts of organic siliconresin, anionic surface are lived
0.25 part of agent of property, 0.45 part of calgon, 0.25 part of polypropylene glycerol aether, 3 parts of sodium methyl silicate.
Preparation method is：Above-mentioned raw materials are mixed respectively, obtain fire-proof mud and fire-resistant fluid, using it is preceding by fire-proof mud and
Fire-resistant fluid is at room temperature according to mass ratio 1：0.8 is mixed evenly.
Embodiment 5
The present embodiment provides a kind of waterborne thin fire retardant coating for steel structure comprising the fire-proof mud being used cooperatively and fire prevention
Liquid；
Fire-proof mud is counted in parts by weight：6 parts of diatomite, 7 parts of bentonite, 1 part of cordierite powder, swelling perlite powder 5,
2 parts of aquamaine mountain flour, 3.5 parts of graphite, 2.7 parts of macromolecule solubility rubber powder, 2.8 parts of methyl cellulose ether, is received 5 parts of wood powder
4.7 parts of 0.9 part of silica of rice, 2.4 parts of oxidized starch and dipentaerythritol.
Fire-resistant fluid is counted in parts by weight：38 parts of inorganic silicon fire retardant, 15 parts of organic siliconresin, anionic surface are lived
0.15 part of agent of property, 0.55 part of calgon, 0.15 part of polypropylene glycerol aether, 4 parts of sodium methyl silicate.
Preparation method is：Above-mentioned raw materials are mixed respectively, obtain fire-proof mud and fire-resistant fluid, using it is preceding by fire-proof mud and
Fire-resistant fluid is at room temperature according to mass ratio 1：1 is mixed evenly.
Effect experimental examples 1
Fire protecting performance is tested：
The fireproof coating 5mm (experimental group) that brushing embodiment 3 provides on the steel plate of 300mm*200mm*5mm, with common
Steel plate is blank assay group.Fire endurance test method is with reference to GB14907-2002.
Shown in test result is as follows：
(1) general steel plate (i.e. blank test)
The fire protecting performance test result of 1. blank of table
| Time | Frontal flame temperature | Back of the body temperature | Whether fire is worn |
| 1min | 950 | 356 | It is no |
| 2min | 950 | 540 | It is no |
(2) 3 fireproof coating of embodiment (experimental group)
The fire protecting performance test result of 2. fireproof coating of table
| Time | Frontal flame temperature | Back of the body temperature | Whether fire is worn |
| 1min | 950 | 25 | It is no |
| 3min | 950 | 65 | It is no |
| 5min | 950 | 76 | It is no |
| 10min | 950 | 115 | It is no |
| 15min | 950 | 135 | It is no |
| 20min | 950 | 165 | It is no |
| 30min | 950 | 210 | It is no |
| 40min | 950 | 256 | It is no |
| 50min | 950 | 263 | It is no |
| 60min | 950 | 280 | It is no |
| 70min | 950 | 285 | It is no |
| 80min | 950 | 290 | It is no |
| 90min | 950 | 288 | It is no |
| 100min | 950 | 287 | It is no |
| 110min | 950 | 289 | It is no |
| 120min | 950 | 285 | It is no |
The steel plate it is found that fireproof coating that the application embodiment of the present invention 3 provides is compared, it is resistance at a temperature of identical frontal flame
It is up to 120min by the limit, and carries on the back temperature and is far below general steel plate, it can be seen that, which has excellent fire protecting performance.
Effect experimental examples 2
Using national standard《Fire-resistant coating for steel structure general technical specifications》(GB14907-2002) to the embodiment of the present invention 3
The fireproof coating of offer is detected, and the results are shown in Table 3：
3. Properties of Fire-Proofing Coatings testing result of table
As shown in Table 4, this fireproof coating indices that the embodiment of the present invention 3 provides all meet national standard, and portion
Point index is much better than national standard, such as the fire endurance of the fireproof coating is 1.8, adhesion strength is 0.65 etc..
In addition, the fireproof coating that other embodiments are provided carries out above-mentioned experiment, result and embodiment 3 are almost the same,
Therefore it does not repeat one by one.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of waterborne thin fire retardant coating for steel structure, which is characterized in that it includes the fire-proof mud being used cooperatively and fire-resistant fluid；
The fire-proof mud is counted in parts by weight：13~24 parts of aggregate, 4~7 parts of powdered biomass, 2~4 parts of graphite, toughening
2~4 parts of agent, 1~3 part of methyl cellulose ether, 0.5~1.5 part of nano silicon dioxide, 2~4 parts of oxidized starch and double Ji Wusi
4~6 parts of alcohol；
The fire-resistant fluid is counted in parts by weight：35~45 parts of inorganic silicon fire retardant, 14~17 parts of waterproofing agent, wetting agent 0.1
~0.3 part, 0.4~0.6 part of dispersant, 0.1~0.3 part of antifoaming agent, 3~5 parts of sodium methyl silicate.
2. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the aggregate includes by weight
The following component of number meter：3~6 parts of diatomite, 4~7 parts of bentonite, 1~3 part of cordierite powder, swelling perlite powder 3~5 with
And 2~3 parts of aquamaine mountain flour.
3. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the toughener is macromolecule
Soluble rubber powder, the macromolecule solubility rubber powder include polyvinyl alcohol, polyethylene glycol oxide and hydroxypropyl methyl cellulose.
4. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the powdered biomass includes
Plant straw powder or wood powder.
5. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the waterproofing agent is organosilicon
Resin.
6. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the wetting agent is anion
Type surfactant, the anionic surfactant include by alkyl sulfate, sulfonate, aliphatic acid or aliphatic ester sulphur
It is selected in the group of hydrochlorate and phosphate composition at least one.
7. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the dispersant includes by six
It is selected in the group that sodium metaphosphate, sodium tripolyphosphate, sodium pyrophosphate and waterglass form at least one.
8. waterborne thin fire retardant coating for steel structure according to claim 1, which is characterized in that the antifoaming agent includes emulsification
In the group that silicone oil, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerin ether form
What is selected is at least one.
9. a kind of preparation method of such as claim 1~8 any one of them fireproof coating, which is characterized in that it includes：
In parts by weight, by the aggregate, the powdered biomass, the graphite, the toughener, the methylcellulose
Ether, the nano silicon dioxide, the oxidized starch, dipentaerythritol mixing, obtain the fire-proof mud；
In parts by weight, the inorganic silicon fire retardant, waterproofing agent, wetting agent, dispersant, antifoaming agent and sodium methyl silicate are mixed
It closes, obtains the fire-resistant fluid；
By the fire-proof mud and the fire-resistant fluid according to mass ratio 1：0.8~1.2 mixing.
10. a kind of water thin steel structure fireproofing mud, which is characterized in that it is counted in parts by weight includes：13~24 parts of aggregate, life
4~7 parts of material powder, 2~4 parts of graphite, 2~4 parts of toughener, 1~3 part of methyl cellulose ether, nano silicon dioxide 0.5~
4~6 parts of 1.5 parts, 2~4 parts of oxidized starch and dipentaerythritol.
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