CN1394923A - Water thin type expanding steel structure fire-resisting paint and its preparation method - Google Patents
Water thin type expanding steel structure fire-resisting paint and its preparation method Download PDFInfo
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Abstract
The present invention relates to a water thin expanding steel structure fire-resisting coating material and its preparation method. Said ivnention adopts a self-synthesized high melting temp. acrylate emulsion as main film-forming substance, adding proper quantity of chlorometaemulsion to raise fibre resistance of film-forming substance self-body, and on the basis of convertional ammonium polyphosphate fire-resistant adjuvant an expandable graphite as foaming material is added so as to form the invented fire-resisting coating material. Said invention can greatly raise forming rate to coating layer, the thickness of foamed layer can be up to 30-50 times that of original coating layer, and its fire-resisting limit can be up to 75 min (thickness of coating layer is 3 mm).
Description
Technical field
The present invention relates to a kind of steel structure fire-proof paint.The invention further relates to the preparation method of this steel structure fire-proof paint.
Background technology
Existing steel structure fire-proof paint kind is more, can be divided into aq. type, solvent-borne type and powder-type three classes by its material shape; Can be divided into thick type, slim and ultrathin three classes by coat-thickness; Then can be divided into heat insulation type, expanded polystyrene veneer and non-expansion type three classes by fire prevention mechanism.Steel structure fire-proof paint commonly used at present is mainly by thick type, slim and ultrathin three kinds of classification:
Thick formed steel construction frie retardant coating: coat-thickness is between 8～50mm, and fire endurance is 0.5～3h, belongs to the heat insulation type frie retardant coating, mainly is made up of flame retardancy gelling material cement based, inorganic thermal insulation material (as expansion silica, perlite etc.) and fire retardant etc.Though this class coating is present turnout maximum, a most widely used class frie retardant coating, and can play the effect that reduces flame propagation velocity at the burning initial stage, will be ineffective in case the intensity of a fire is vigorous, so generally be used for the lower buildings of fire protection requirement.
Thin section steel structure fire-resisting paint: the frie retardant coating of coat-thickness between 3～7mm is called slim frie retardant coating, fire endurance is 0.5～1.5h, mainly form, belong to expanding fire-proof paint by macromolecule resin, one-tenth C catalyst, carbon forming agent, whipping agent and mineral filler etc.This class paint coatings is thin, the unit surface consumption is little, fire-proof function is strong, good decorating effect, is the developing direction of frie retardant coating therefore.
Super-thin steel structure fire-proof paint: the coat-thickness of ultra-thin fire-resistant coating is no more than 3mm, and fire endurance is in 2h.The filmogen of this class coating and fire proofing additive and slim frie retardant coating are basic identical, but have taked to improve the measure of fire proofing additive fineness in the coating on preparation technology, make coating that levelling property preferably be arranged, and have increased the decorative appearance of coating.This class coating also is the developing direction of frie retardant coating.
The existing component that is used for the water thin type expanding frie retardant coating of steel construction comprises common benzene emulsion, chlorine partial emulsion (or adopting chlorine partial emulsion separately), ammonium polyphosphate, trimeric cyanamide, tetramethylolmethane and mineral filler and film coalescence aid.Its concrete technology is for to form common propyl benzene emulsion, chlorine partial emulsion, fire proofing additive mixed grinding.Though this steel structure fire-proof paint is thin because of coating, the good frie retardant coating developing direction that becomes of performance, because the fire proofing additive of this water thin type expanding frie retardant coating employing is mainly organic compound, its refractory temperature is not high.The softening temperature of the filmogen of such frie retardant coating employing is lower simultaneously, and burning post-foaming layer is more loose, comes off easily under flame impingement.In addition, the conformability between filmogen and the fire proofing additive is also good inadequately, and the melt temperature of filmogen often is not the foaming starting temperature of fire proofing additive, so the coating rate of expansion is lower, generally only is 10～20 times of self thickness.Therefore the fire endurance of the steel structure aqueous scumbling expanding fire-proof paint made from above-mentioned common propyl benzene emulsion, chlorine partial emulsion, fire proofing additive 30min does not only reach the level of the thick matter type of cement based frie retardant coating, so has limited their range of application.
Summary of the invention
The technical problem to be solved in the present invention is to seek that a kind of to have a good foam performance and burning post-foaming layer and steel construction compact, the slim fire-proof dilatation of high efficiency water with thick matter type frie retardant coating level is to satisfy the frie retardant coating of the higher fire protection requirement of steel construction.
The present invention also will solve the preparation method of this frie retardant coating.
For solving the problems of the technologies described above, the present invention is performed such: coating of the present invention is formed and is adopted voluntarily that synthetic high melting temperature acrylic ester emulsion is a main film forming substance, mix chlorine partial emulsion to improve the flame retardant resistance of filmogen self, particularly selected the expandability expanded graphite as swelling agent, and ammonium polyphosphate class fire proofing additive, filler and film coalescence aid.Wherein: ammonium polyphosphate class fire proofing additive be ammonium polyphosphate, melamine and season amylalcohol; Filler is a zinc oxide;
It is as follows that coating of the present invention is formed proportioning:
Component concentration (wt%)
Water-based high melting temperature acrylic ester emulsion 32～38
Chlorine partial emulsion 12～18
Ammonium polyphosphate 17～20
Melamine 5～7
Tetramethylolmethane 11～13
Expanded graphite 4～10
Zinc oxide 0～6
Film coalescence aid 0～6
Preparation technology of the present invention comprises following two steps:
The first step is the synthetic of high melting temperature acrylic ester emulsion: at first select following component:
Monomer is: to monochloromethyl vinylbenzene (halogen atom wherein can be chlorine atom or bromine atoms);
Methyl methacrylate; Butyl acrylate; Vinylformic acid.
Emulsifying agent is: sodium lauryl sulphate and polyoxyethylene nonylphenol ether (OP-10);
Initiator is: ammonium persulphate.Then by following component concentration weighing (emulsifying agent, initiator and water are pressed monomer total amount % and are calculated):
Classification component concentration (wt%)
Monomers methyl methacrylate 40～46
Butyl acrylate 40～46
Vinylformic acid 2～4
P-chloromethyl styrene 4～18
To brooethyl vinylbenzene 4～18
Emulsifier sodium lauryl sulfate is 1～3 of a monomer total amount
Polyoxyethylene nonylphenol ether (OP-10) is 3～6 of a monomer total amount
Initiator ammonium persulfate is 1～2 of a monomer total amount
Water 100
Monomer and emulsifying agent and water are mixed earlier, add initiator again, the controlled polymerization temperature is 70～85 ℃, polymerization time is 4～6h, promptly make high melting temperature acrylic ester emulsion of the present invention, the melt temperature of the polymkeric substance of this emulsion is 125～135 ℃ after measured, and has following chemical structure:
Wherein X is Cl or Br; N, m, p, q are the positive integer greater than 0.
Second step was the preparation of frie retardant coating: adopt above-mentioned high melting temperature acrylic ester emulsion of synthetic voluntarily and chlorine partial emulsion as filmogen; Polyphosphoric acid amine, trimeric cyanamide and tetramethylolmethane are fire proofing additive.At first by the frie retardant coating component concentration weighing of the invention described above good after, earlier emulsion, fire proofing additive, filler and film coalescence aid are put together and mix 20～30 minutes, after sand mill grinds, add the expandability expanded graphite of above-mentioned component then, promptly get finished product of the present invention after mixing.
The present invention has following advantage:
1. because frie retardant coating of the present invention is on the basis of used usually ammonium polyphosphate class fire proofing additive, add a kind of expandability expanded graphite as foam material, this expanded graphite is a class natural minerals, has metalluster, grey black, the soft tool soapy feeling of matter, flakey, violent foaming and intumescing to more than 200 ℃ the time is heated, the rate of expansion maximum can reach about 350 times of own vol, therefore improved the frothing percentage of coating greatly, depth of foam can reach 30～50 times of former thick coating, thereby has improved fire endurance.
2. synthetic high melting temperature acrylic ester emulsion is a main film forming substance because frie retardant coating of the present invention adopts voluntarily, mix chlorine partial emulsion in right amount, compare as the emulsion of filmogen with existing simple use chlorine partial emulsion, the flame retardant resistance of filmogen self has improved.In addition, the methyl methacrylate that high melting temperature acrylic ester emulsion of the present invention is adopted when preparing and to monochloromethyl vinylbenzene, especially the latter, the combination rate that improves melt temperature and coating has been made very big contribution, made its fire endurance bring up to 75min (coat-thickness 3mm) from existing 30min.
3. preparation technology of the present invention is simple, pollution-free, with low cost, be widely used.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is further described.
Embodiment 1
The high melting temperature preparing acrylate emulsion.See also olefin(e) acid ester emulsion preparation prescription and existing common benzene emulsion prescription in table 1 high melting temperature of the present invention.At first, press high melting temperature acrylic ester emulsion 1 formulation of table 1.Monomer weighing among the component A is good, then by accounting for monomer total amount weight percent weighing water and emulsifying agent, put together to mix and stir, form pre-emulsion A.Water in the B component and initiator is good by accounting for the weighing of monomer total amount weight percent in the table 1, and mixed dissolution obtains solution B.Then, the water of component C is added in the reactor after accounting for the weighing of monomer total amount weight percent, and reactor is placed water-bath constant temperature to 75 ℃, add about 1/5 pre-emulsion A and about 1/5 solution B, the about 0.5h of stirring reaction.When little blueness appearred in reaction system, beginning dripped pre-emulsion A and solution B simultaneously.Dripped in about 3 hours.Be incubated 1 hour down at 85 ℃ then, remove water-bath, be cooled to below 40 ℃, add ammoniacal liquor and regulate pH value to 8, discharging is standby.The initial melt temperature of products therefrom is 134 ℃.
Embodiment 2
Press the formulation high melting temperature acrylic ester emulsion 2 of table 1.The preparation method is identical with enforcement sharp 1.The initial melt temperature of products therefrom is 131 ℃.
Embodiment 3
See also 4 frie retardant coating prescriptions of the present invention and one of them existing comparative example prescription that table 2 exemplifies.At first, by 1 high melting temperature acrylic ester emulsion 1 weighing 36% weight percent that earlier embodiment 1 is prepared of filling a prescription in the table 2, and chlorine partial emulsion 15%, ammonium polyphosphate 20%, melamine 7%, tetramethylolmethane 13%, expanded graphite 4%, zinc oxide 3% and film coalescence aid 2% weighing are good.Then, earlier the high melting temperature acrylic ester emulsion is added in the agitation vat, stir adding three kinds of fire proofing additives, zinc oxide and film coalescence aid of the present invention down, after stirring, go into sand mill and grind together, add expanded graphite then, mix the discharging barrelling.The performance of the gained coating of setting fire of the present invention sees Table 3 prescription 1.From the performance project of table 3 and compare, reached purpose of the present invention with the performance that has coating now.
Embodiment 4
By filling a prescription 2 in the table 2, adopt embodiment 3 same methods to prepare frie retardant coating.The performance of gained coating sees Table 3 prescription 2.
Embodiment 5
By filling a prescription 3 in the table 2, adopt embodiment 3 same methods to prepare frie retardant coating.The performance of gained coating sees Table 3 prescription 3.
Embodiment 6
By filling a prescription 4 in the table 2, adopt embodiment 3 same methods to prepare frie retardant coating.The performance of gained coating sees Table 3 prescription 4.
The present invention adopts the emulsion of preparation voluntarily simultaneously again owing to adopted expanded graphite as swelling agent, and these two aspects are improved existing water thin fire-proof dilatation, produced outside the advantage as table 3, with low cost, preparation technology is simple, can be widely used in various steel structure fireproofings.
Comparative example
Press the common benzene emulsion of formulation of table 1.Monomer among the component A, water and emulsifier mix are stirred, form pre-emulsion A.With water in the B component and initiator mixed dissolution, obtain solution B.The water of component C is added in the reactor, and reactor is placed water-bath constant temperature to 75 ℃, add about 1/5 pre-emulsion A and about 1/5 solution B, the about 0.5h of stirring reaction.When little blueness appearred in reaction system, beginning dripped pre-emulsion A and solution B simultaneously.Dripped in about 3 hours.Be incubated 1 hour down at 85 ℃ then, remove water-bath, be cooled to below 40 ℃, add ammoniacal liquor and regulate pH value to 8, discharging is standby.The initial melt temperature of products therefrom is 116 ℃.
Prescription by comparative example in the table 2 adds water in the agitation vat, stirs down to add fire proofing additive, after stirring, goes into sand mill and grinds together the discharging barrelling.The performance of gained coating sees Table 3.
Table 1 high melting temperature acrylic ester emulsion preparation of the present invention prescription and common benzene emulsion prescription (wt%)
# is the weight % that accounts for the monomer total amount
| Material name | High melting temperature acrylic ester emulsion 1 | High melting temperature acrylic ester emulsion 2 | Common benzene emulsion | ||
| A | Monomer | Methyl methacrylate | ?????45 | ?????44 | ??????～ |
| Butyl acrylate | ?????44 | ?????43 | ??????54 | ||
| Vinylformic acid | ?????2 | ?????4 | ??????2 | ||
| P-chloromethyl styrene | ?????9 | ?????～ | ??????～ | ||
| To brooethyl vinylbenzene | ?????～ | ?????9 | ??????～ | ||
| Vinylbenzene | ?????～ | ?????～ | ??????44 | ||
| Emulsifying agent | Sodium lauryl sulphate | ?????2 | ?????1 | ?????1～3 | |
| ??????OP-10 | ?????4 | ?????6 | ?????3～6 | ||
| Water | ?????85 | ?????85 | ??????85 | ||
| ?B | Initiator | Ammonium Persulfate 98.5 | ?????1 | ?????2 | ?????1～2 |
| Water | ?????10 | ?????10 | ??????10 | ||
| ?C | Water | ?????5 | ?????5 | ??????5 |
Table 2 water-based scumbling of the present invention expanding fire-proof paint prescription and comparative example
| Material name | Prescription 1 | Prescription 2 | Prescription 3 | Prescription 4 | Comparative example |
| Common benzene emulsion | ???～ | ???～ | ???～ | ???～ | ??32～38 |
| High melting temperature acrylic ester emulsion 1 | ???36 | ???37 | ???35 | ???33 | ????～ |
| Chlorine partial emulsion | ???15 | ????13 | ???14 | ????18 | ??12～18 |
| Ammonium polyphosphate | ???20 | ????19 | ???18 | ????17 | ????22 |
| Trimeric cyanamide | ???7 | ????6.5 | ???6 | ????5.5 | ????8 |
| Tetramethylolmethane | ???13 | ????12.5 | ???12 | ????11.5 | ????14 |
| Expanded graphite | ???4 | ????6 | ???8 | ????10 | ????～ |
| Zinc oxide | ???3 | ????2 | ???6 | ????0 | ???0～6 |
| Film coalescence aid | ???2 | ????4 | ???1 | ????5 | ???0～6 |
The salient features of table 3 frie retardant coating of the present invention reaches and the comparison that has coating now
| Performance project | Prescription 1 | Prescription 2 | Prescription 3 | Prescription 4 | Comparative example | |
| Time of drying (h) | ??5 | ???4 | ???2.5 | ???2 | ???6 | |
| Dry splitting resistance of initial stage | Flawless | Flawless | Flawless | Flawless | A small amount of superfine crackle | |
| Bonding strength (MPa) | ??0.75 | ???0.68 | ???0.50 | ???0.63 | ???0.24 | |
| Water tolerance (h) | ??＞24 | ???＞24 | ???＞24 | ???＞24 | ???＞24 | |
| Freeze-thawing resistant stability (inferior) | ??＞15 | ???＞15 | ???＞15 | ???＞15 | ???＞15 | |
| Humidity resistance (h) | ??280 | ???300 | ???340 | ???400 | ???250 | |
| Fire performance | Coat-thickness (mm) | ??3 | ???3 | ???3 | ???3 | ???3 |
| Depth of foam (mm) | ??85 | ???98 | ???108 | ???120 | ???28 | |
| Fire endurance (min) | ??54 | ???60 | ???66 | ???75 | ???30 | |
Claims (3)
1. water thin type expanding steel structure fire-resisting paint is characterized in that: by synthetic high melting temperature acrylic ester emulsion voluntarily, and ammonium polyphosphate class fire proofing additive and expandability expanded graphite, and be aided with filler and film coalescence aid is formed;
Wherein: ammonium polyphosphate class fire proofing additive is ammonium polyphosphate, melamine and tetramethylolmethane; Filler is a zinc oxide;
Concrete composition proportioning is as follows:
Component concentration (wt%)
Water-based high melting temperature acrylic ester emulsion 32～38
Chlorine partial emulsion 12～18
Ammonium polyphosphate 17～20
Melamine 5～7
Tetramethylolmethane 11～13
Expanded graphite 4～10
Zinc oxide 0～6
Film coalescence aid 0～6
2. steel structure fire-proof paint according to claim 1 is characterized in that: the melt temperature of olefin(e) acid ester emulsion is 125～135 ℃ in the described high melting temperature, and its chemical structure is:
Wherein X is Cl or Br; N, m, p, q are the positive integer greater than 0.
3. the preparation method of a water thin type expanding steel structure fire-resisting paint is characterized in that: comprise following two steps:
The first step: high melting temperature preparing acrylate emulsion, the monomer of employing be methyl methacrylate, butyl acrylate, vinylformic acid, to monochloromethyl vinylbenzene; Wherein the halogen atom in the monochloromethyl vinylbenzene be can be chlorine atom or bromine atoms; The emulsifying agent that adopts is sodium lauryl sulphate and polyoxyethylene nonylphenol ether (OP-10), and initiator is an ammonium persulphate; At first select following component and weighing good, wherein the content of emulsifying agent, initiator and water is the wt% of monomer total amount:
Classification component concentration (wt%)
Monomers methyl methacrylate 40～46
Butyl acrylate 40～46
Vinylformic acid 2～4
To monochloromethyl vinylbenzene 4～18
Emulsifier sodium lauryl sulfate 1～3
Polyoxyethylene nonylphenol ether (OP-10) 3～6
Initiator ammonium persulfate 1～2
Water 100 then, monomer and emulsifying agent are mixed earlier, add initiator, the controlled polymerization temperature is 70～85 ℃, polymerization time is 4～6h, promptly makes high melting temperature acrylic ester emulsion of the present invention;
Second step: the preparation of frie retardant coating: at first good by aforesaid right requirement 1 described frie retardant coating component concentration weighing, then emulsion and fire proofing additive are put together and mix 20～30 minutes, after sand mill grinds, add expandability expanded graphite, filler and the film coalescence aid of above-mentioned component, promptly get finished product of the present invention after mixing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113320 CN1238448C (en) | 2001-07-10 | 2001-07-10 | Water thin type expanding steel structure fire-resisting paint and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113320 CN1238448C (en) | 2001-07-10 | 2001-07-10 | Water thin type expanding steel structure fire-resisting paint and its preparation method |
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| Publication Number | Publication Date |
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| CN1394923A true CN1394923A (en) | 2003-02-05 |
| CN1238448C CN1238448C (en) | 2006-01-25 |
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| CN 01113320 Expired - Fee Related CN1238448C (en) | 2001-07-10 | 2001-07-10 | Water thin type expanding steel structure fire-resisting paint and its preparation method |
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| CN103805024B (en) * | 2013-10-21 | 2015-11-25 | 溧阳市浙大产学研服务中心有限公司 | A kind of technique of steel construction being carried out to frie retardant coating application |
| CN103788866B (en) * | 2013-10-21 | 2016-04-27 | 溧阳市浙大产学研服务中心有限公司 | A kind of technique of steel building being carried out to application |
| CN103788867A (en) * | 2013-10-21 | 2014-05-14 | 溧阳市浙大产学研服务中心有限公司 | Fireproof coating used for steel structure buildings, preparation method thereof and coating process |
| CN105505026A (en) * | 2016-02-19 | 2016-04-20 | 徐冉 | Water-based ultra-thin expansive type steel structure fire-retardant coating and preparation method thereof |
| CN105968891A (en) * | 2016-05-27 | 2016-09-28 | 江苏金基特钢有限公司 | Fireproof and corrosion-proof alloy steel coating composition |
| CN108017997A (en) * | 2017-12-27 | 2018-05-11 | 洛阳神佳窑业有限公司 | A kind of preparation method of new steel structure fireproof coating |
| CN109929345A (en) * | 2019-03-26 | 2019-06-25 | 上海中南建筑材料有限公司 | A kind of expanding fire-proof paint and preparation method thereof |
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| CN1238448C (en) | 2006-01-25 |
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