CN102643589A - Indoor water-based ultrathin steel-structure fireproof coating and preparation method thereof - Google Patents
Indoor water-based ultrathin steel-structure fireproof coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an indoor water-based ultrathin steel-structure fireproof coating and a preparation method thereof. The indoor water-based ultrathin steel-structure fireproof coating includes the following components: in weight percentage, 17-20% of tap water, 25-30% of water-based acrylic emulsion, 38-45% of expansion flame retardant system, 5-10% of waterproof filler, 0.4-0.6% of wetting dispersant A, 0.8-1,2% of wetting dispersant B, 4-6% of anti-freezing agent, 0.3-0.5% of defoamer, 1-2% of filming auxiliaries, 0.1-0.2% of pH (potential of hydrogen) regulator, 0.4-0.5% of flatting agent, 0.1-0.2% of thickener and 0.2-0.4% of anticorrosion and mildew-proof agent. The coating is free of any harmful substances such as organic solvent and heavy metal and the like and is environment-friendly, non-toxic, safe in storage and excellent in fireproof heat-insulation performance. Comprehensive performances of the coating can meet national standards and completely meet the application requirement of steel-structure fireproof protection.
Description
Technical field
The present invention relates to technical field of aqueous paint, particularly relate to a kind of indoor water super-thin steel structure fire-proof paint and preparation method thereof.
Background technology
Along with the densification of urban population, the high stratification of residential housing; Steelwork has obtained using long span building thing and the equal wide-scale adoption steelwork of super high rise building such as especially high-rise mansion, large scale industry factory building, large-scale place of public amusement widely as main building structural materials.Steel are because thermal conductivity is strong, and the steelwork that does not add flameproof protection is under the hot conditions of the scene of a fire, and self temperature only just can reach more than 540 ℃ in tens minutes, caused its physical strength seriously to descend; In this case, the steelwork distortion that inevitably can be distorted finally causes the breaking-up of caving in, and causes a large amount of loss of life and personal injury and property damage easily.Frie retardant coating can play effective flameproof protection effect to steelwork, stops the rapid spread of the intensity of a fire, to dwindling the disaster scope, winning rescue and escape time has important practical significance.Mostly the steel structure fire-proof paint product of wideling popularize in the market is solvent-borne type; It contains a large amount of organic volatile VOC (Volatile Organic Compounds), and remaining organic solvent directly causes coating to have combustibility to a certain degree in the coating film process.This not only contaminate environment, waste energy, the serious harm workmen healthy, also might reduce the flameproof effect of frie retardant coating, give human and environment brings multiple harm.
With water-borne acrylic resin as filmogen; Optimize the proportioning between the expandable flame retardant system; Preferred heat insulation reinforcing filler and functional aid; Carry out rational formulating of recipe, prepare a kind of environment-friendly type, high performance water super-thin steel structure fire-proof paint, solve degradation problem under the incomplete caused coating flameproof effect of volatilization of environmental pollution that the volatilization of its organic solvent causes and organic solvent; Perlite has good thermal expansivity, interts in the middle of the carbonaceous layer structure behind the chance high temperature, has not only improved the intensity of carbonaceous layer, and its hollow structure also has effect to delay the velocity of propagation of heat to steel substrate, thereby has improved the fire resistance of frie retardant coating.Each item performance index of the frie retardant coating performance requriements of GB 14907-2002 that be up to state standards basically to indoor super-thin steel structure fire-proof paint.
Summary of the invention
The objective of the invention is to overcome existing technical disadvantages; A kind of indoor water super-thin steel structure fire-proof paint is provided; This coating environment-protecting asepsis, cost are lower, easy construction, excellent performance; Directly construct at the steel surface of rust prevention by applying liquid material priming paint in advance, can reach the performance that the solvent-borne type frie retardant coating is had, its each item performance index all are up to state standards.
Another purpose of the present invention is to provide a kind of preparation method of indoor water super-thin steel structure fire-proof paint.
The object of the invention is realized through following technical scheme:
A kind of indoor water super-thin steel structure fire-proof paint; By weight percentage, its composition of raw materials is made up of following component: tap water 17～20%, aqueous acrylic emulsion 25～30%, expandable flame retardant system 38～45%, fire-proof packing 5～10%, wetting dispersing agent A 0.4～0.6%, wetting dispersing agent B 0.8～1.2%, frostproofer 4～6%, skimmer 0.3～0.5%, film coalescence aid 1～2%, pH regulator agent 0.1～0.2%, flow agent 0.4～0.5%, thickening material 0.1～0.2% and Antisepticize and mildew preventive 0.2～0.4%;
Said aqueous acrylic emulsion is selected organic siloxane modified ACRYLIC EMULSION for use; The filmogen that adopts in the present invention prescription is a polymer emulsion, considers that binder resin can have sticking power and difficult drop-off preferably with ground under hot conditions, the emulsion that said filming emulsion is selected organosilane and vinylformic acid for use or obtained with acrylic ester copolymer.Since in organic-silane-modified acrylic ester (organic siloxane modified acrylic acid emulsion) macromolecular chain on the Siliciumatom connect alkyl and receive thermooxidizing after; What generate is highly cross-linked more stable Si-O-Si key; Can prevent the fracture degraded of its main chain; And Si-O-Si bond energy and ground tight bond, improved carbonaceous layer and the ground sticking power when high temperature, therefore can effectively improve the easy deciduous of carbonaceous layer.996AD like the well-off industry of Ahmedabad ltd; The BLJ-998AD of Shanghai Bao Lijia chemical industry ltd.
Said expandable flame retardant system is that tetramethylolmethane, trimeric cyanamide and ammonium polyphosphate are 5～6: 10～11 according to weight ratio: the mixture of 17～18 compositions; The expandable flame retardant system is traditional tetramethylolmethane, trimeric cyanamide, ammonium polyphosphate system, and the consistence of their three's decomposition temperatures helps in intumescent system, giving full play to effect separately, in the forming process of charring layer, plays synergy.Like the ultra-fine monopentaerythritol of environmental protection that Qingdao novel material sci-tech industrial park Development Co., Ltd produces, particle diameter reaches 600 orders, and property stable in the air is high, is difficult for suction, and fusing point is 261 ℃, and 260 ℃～360 ℃ is its decomposition temperature interval; The Jinan gold is full of the trimeric cyanamide that safe chemical industry ltd produces, content of melamine＞99.0%, and moisture content≤0.20%, pH are 7.5～9.5, and it has higher thermostability below 300 ℃, and 300 ℃～380 ℃ is that its decomposition temperature is interval; The ammonium polyphosphate EPFR-APP (II) that general plug furan (Qingyuan City) phosphorus chemistry ltd produces, the polymerization degree＞1000, MWD are narrow, and II type structural purity is high, and its density is 1.9g/cm
3, phosphorus content is 30～32%, and nitrogen content is 14～15%, and pH (25 ℃, 10% suspension-s) is 5～7, and is water-soluble＜0.2% (g/mlH
2O), water cut＜0.5%, median size is about 10 μ; Decomposition temperature＞260 ℃, this product P, N ignition-proof element content are high, Heat stability is good; Water-soluble low, near neutral, smokeless low toxicity; Cooperate other sources of the gas, carbon source, play the fire-retardant fireproof effect, make that charring layer is more stable, flameproof effect is stable to become charcoal, mechanism of intumescence.
Said fire-proof packing is one or more of perlite, glass powder and agalmatolite; Pearlstone like the production of Xinyang Pingqiao District perlite at dawn Building Materials Factory; It is light to have apparent density; Remarkable advantages such as thermal conductivity is low, chemicalstability good, the use temperature scope is wide, intensity is high, wettability power is little, electrical insulation capability is good, good fluidity, its granule interior is a polynuclear plane, under the hot conditions effect; Perlite can evenly expand from inside to outside; The expanded granular surface is through moment high temperature vitreous, and inner porous, the hollow hollow structure that is kept perfectly can play good heat-insulating, fire-preventing effect in coating fire prevention process; The glass powder of Guangzhou new rare chemical metallurgy ltd has advantages such as transparency height, chemical property is stable, physical strength is high, thermotolerance is good, is applied in the frie retardant coating, can effectively improve the thermotolerance of coating; The agalmatolite of the nonmetal development company in the South Sea, Guangdong Province can be used as refractory materials and high temperature material.
Said wetting dispersing agent A is at least a in cationic wetting agent, the nonionogenic tenside; Said cationic wetting agent is Hydropalat 875; Said non-ionic wetting agent is X-405, PE-100 or Hydropalat 436; The effect of said wetting dispersing agent A is a surface tension of improving coating system; Make it can better wetting ground; Improve ADHESION OF PAINTS power; Simultaneously it can also play color stuffing and assist to disperse and assist anti-heavy effect, can effectively help powder such as color stuffing in coating, to disperse and assists that the coating anti-settling agent is follow-up to be prevented sinking.Wherein, the Hydropalat 875 of cationic wetting agent such as Shenzhen Hai Chuan chemical industry ltd; The PE-100 of the X-405 of non-ionic wetting agent such as U.S. Rhom and Hass, Shenzhen Hai Chuan chemical industry ltd, Hydropalat 436 etc.
Said wetting dispersing agent B is at least a in polyvalent carboxylic acid's salt base polymer, the polyacrylate; Said polyvalent carboxylic acid's salt base polymer is SN-5020, SN-5027, SN-5040 or 731A; Said polyacrylate is Orotan1288, dispersant5050 or dispersant5240; The effect of said wetting dispersing agent B is to promote that color stuffing is uniformly dispersed in coating system, and can in system, keep stable existence.Wherein, polyvalent carboxylic acid's salt base polymer can be like SN-5020, SN-5027, the SN-5040 of Shenzhen Hai Chuan chemical industry ltd, the 731A of U.S. Rhom and Hass etc.; Polyacrylate can be the Orotan1288 like U.S. Rhom and Hass, dispersant5050, the dispersant5240 of the modest company of Taiwan moral.
Said thickening material is a non-ionic type silane hydrophobically modified block polymers of polyurethane, contains hydrophilic radical and hydrophobic grouping on its molecular chain simultaneously.Such thickening material can be simultaneously the water thickening and with the polymer emulsion associative thickening, can use two kinds of non-ionic hydrophobic modified polyurethane segmented copolymers composite.UN-643, the UN-641 of preferred Beijing Futesi Chemical Technology Co., Ltd.; DSX3116, the DSX3290 of Shenzhen Hai Chuan chemical industry ltd; The WT-105A of Deuchem Co., Ltd. etc.; Can further improve the flowability and the leveling characteristics of coating system, thereby make coating have storge quality and workability preferably.
Said film coalescence aid is an alcohol ester-12; Alcohol ester-12 like Eastman Chemical; Its latex to most of types all has extremely strong dissolving power, and has low water-solublely, can guarantee that it is all absorbed by polymer particles; This shows that its solvability mainly concentrates on required position, thereby has excellent film forming properties.
Said skimmer is the modified organic silicon defoamer; The polysiloxane-polyether copolymer skimmer generally all contains hydrophobic granule-hydrophobic silica; Can strengthen the foam control dynamics and prolong the persistence that presses down the bubble liquid effects; Like Foamex815, Foamex 8030, the Foamex Airex 901W of TEGO company, the Defomer 155 of extra large river chemical industry.Molecular level skimmer such as FoamStar A10, FoamStar A12, FoamStar A34, FoamStar A36 etc. are Kening Co.,Ltd's patented product, and froth breaking mechanism is special, and more common skimmer has broken faster bubble speed, and is remarkable to broken small bubble effect.
Other auxiliary agents like mould inhibitor, flow agent, pH regulator agent, frostproofer etc., are auxiliary agent commonly used in the water-borne coatings production.Antisepticize and mildew preventive can be selected SR1138 or EPW type Antisepticize and mildew preventive (Britain's Sol chemistry) for use.Said frostproofer can be selected Ucar 35 (DOW Chemical) for use; Said flow agent can be selected 3580 type flow agents (Switzerland's Ciba) for use.Said pH regulator agent can be selected AMP-95pH regulator (U.S. ANGUS) for use.
A kind of indoor water super-thin steel structure fire-proof paint method comprises the steps and processing condition:
(1) under 400～500r/min rotating speed agitation condition; Tap water, frostproofer 4-6%, wetting dispersing agent A0.4～0.6%, wetting dispersing agent B0.8～1.2%, skimmer 0.3～0.5%, Antisepticize and mildew preventive 0.2～0.4%, the pH regulator agent 0.1～0.2% of adding 17～20%; Stir 5～10min, it is subsequent use to make premix;
(2) under 600～800r/min rotating speed agitation condition, add expandable flame retardant system 38～45%, fire-proof packing 5～10%, stir 5-20min in advance; Changing over to then in the sand milling jar, is under 2500～3500r/min sand milling condition at rotating speed, and high speed sand milling 1～2h reaches below 50 μ until fineness; Change in the dispersion tank, under 700～900r/min rotating speed, stir 4-10min, promptly get the frie retardant coating pigment slurry;
(3) under 700～800r/min rotating speed agitation condition; Said frie retardant coating pigment slurry is joined in the aqueous acrylic emulsion 25～30%; Under 800～1000r/min speed conditions, stir 15～20min, add film coalescence aid 1～2%, flow agent 0.4～0.5%, thickening material 0.1～0.2% in the prescription again, stirring gets final product; Place slaking 30～60min, make indoor water super-thin steel structure fire-proof paint.
The mixing equipment of water super-thin steel structure fire-proof paint of the present invention and grinding plant are that coating prepares the common equipment in the process, like high speed dispersor, vertical grinding machine, ball mill etc.
The construction process requirement of water super-thin steel structure fire-proof paint of the present invention is following: because the flameproof effect of frie retardant coating depends on the cohesive force of construction quality, particularly coating and base material to a great extent, closely related with the surface treatment quality of ground.Consider that the emulsion consumption is on the low side relatively in the frie retardant coating system; The sticking power of itself and steel is inevitable not to be very desirable; Thereby before construction; Preferably steel surface is carried out derusting by sandblast, derusting grade reaches the Sa2.5 level of GB/T 8923 regulations, sprays the rust-proofing primer that one deck build is about 50 μ then; After treating the priming paint surface drying, divide some roads to brush on the steel plate of having handled frie retardant coating, concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ.
The present invention compared with prior art has following advantage:
1) product of gained of the present invention belongs to a kind of environment-friendly type aqueous super-thin steel structure fire-proof paint, compares with the solvent-borne type frie retardant coating, and environment-friendly type is splendid; Do not contain objectionable impuritiess such as any organic solvent and heavy metal; Its VOC content reduces greatly, and is nonflammable, the drawback of having avoided the incomplete caused fire resistance of coating solvent evaporates in drying process to descend; Storage safe, stable performance.
2) products obtained therefrom of the present invention is compared with commercially available solvent-borne type frie retardant coating; Through expandable flame retardant system and fire-proof packing are dispersed in the frie retardant coating system; Make frie retardant coating have excellent more fire resistance; Expansion height, expanding volume all increase, and the carbonaceous layer internal structure is fine and close, abundant more, and the anti-combustion time is longer.
3) the present invention effectively is dispersed in pearlstone in the coating system, because perlite inside belongs to complete porous, hollow hollow structure, can play the insulating refractory effect, delays the relay of heat to steel; Simultaneously, perlite self can expand under hot conditions, and they intert in charcoal layer structure, has strengthened the inner compactness of charcoal layer, has improved the intensity of charcoal layer, and closely knit carbonaceous layer can effectively be resisted the impact of external flame, shows excellent fire performance.
Embodiment
Below in conjunction with embodiment the present invention is described further, but the scope that the present invention requires to protect is not limited to the scope that embodiment explains.
Only if outside specializing among the present invention, the related umber of embodiment is weight part.The film coalescence aid that adopts, pH regulator agent, skimmer, mould inhibitor, frostproofer can also be that other can be applicable to the common agents in the water-borne coatings except being to mention the material.
Embodiment 1
Under the rotating speed of 400r/min, in mass fraction, 17 parts in the tap water in the adding prescription, frostproofer (Ucar 35; DOW Chemical) 4 parts, 0.2 part of Antisepticize and mildew preventive (SR1138, Britain's Sol chemistry), wetting dispersing agent A (X-405; U.S. Rhom and Hass) 0.4 part, 0.8 part of wetting dispersing agent B (SN-5040, Shenzhen Hai Chuan chemical industry ltd); 0.3 part of skimmer (Foamex Airex 901W, TEGO company), pH regulator agent (AMP-95; U.S. ANGUS) 0.1 part, stir 10min, it is subsequent use to make premix;
Under the rotating speed of 800r/min, the tetramethylolmethane (600 orders, Qingdao novel material sci-tech industrial park Development Co., Ltd) in the adding prescription is 7.0 parts successively; 14 parts of trimeric cyanamides (400 orders, Jinan gold are full of safe chemical industry ltd), the ammonium polyphosphate (polymerization degree polymerization degree＞1000; General plug furan (Qingyuan City) phosphorus chemistry ltd) 24 part; 5 parts of fire-proof packings (perlite, Xinyang Pingqiao District perlite at dawn Building Materials Factory) stir 10min in advance; Changing over to then in the sand milling jar, is under the 2500r/min sand milling condition at rotating speed, and high speed sand milling 2h reaches below 50 μ until fineness; Change in the dispersion tank, stir about 5min under the 700r/min rotating speed promptly gets the frie retardant coating pigment slurry again;
Under the rotating speed of 700r/min, in above-mentioned pigment slurry, add 26 parts of aqueous acrylic emulsions (996AD, the well-off industry of Ahmedabad ltd) successively, under the rotating speed of 800r/min, stir 15min; 1 part of film coalescence aid (alcohol ester-12, Eastman Chemical) during adding is filled a prescription successively again, 0.4 part of flow agent (3580, Switzerland's Ciba), 0.1 part of thickening material (WT-105A, Deuchem Co., Ltd.), stirring promptly makes aqueous fire-proof coating.
The supporting finish paint of water-based is used to be sprayed on the surface of aqueous fire-proof coating, and frie retardant coating is played a protective role.The aqueous fire-proof coating that present embodiment is made divides some roads to brush on the steel plate of having handled, and concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ, and performance is as shown in table 1.
Embodiment 2:
Under the rotating speed of 500r/min, the tap water in the adding prescription is 20 parts successively, 6 parts of frostproofers (Ucar 35, DOW Chemical); 0.4 part of Antisepticize and mildew preventive (SR1138, Britain's Sol chemistry), 0.6 part of wetting dispersing agent A (X-405, U.S. Rhom and Hass); 0.8 part of wetting dispersing agent B (Orotan731A, U.S. Rhom and Hass), 0.3 part of skimmer (FoamStarA36, section is peaceful); 5min is stirred in 0.2 part of pH regulator agent (AMP-95, U.S. ANGUS), and it is subsequent use to make premix;
Under the rotating speed of 600r/min, the tetramethylolmethane (600 orders, Qingdao novel material sci-tech industrial park Development Co., Ltd) in the adding prescription is 6 parts successively; 12 parts of trimeric cyanamides (400 orders, Jinan gold are full of safe chemical industry ltd), the ammonium polyphosphate (polymerization degree polymerization degree＞1000; General plug furan (Qingyuan City) phosphorus chemistry ltd) 23 part; 5 parts of fire-proof packings (glass powder, the new rare chemical metallurgy in Guangzhou ltd) stir 10min in advance; Changing over to then in the sand milling jar, is under the 3500r/min sand milling condition at rotating speed, and high speed sand milling 1h reaches below 50 μ until fineness; Change in the dispersion tank, stir about 5min under the 900r/min rotating speed promptly gets the frie retardant coating pigment slurry again;
Under the rotating speed of 800r/min, in above-mentioned pigment slurry, add 28 parts of aqueous acrylic emulsions (996AD, the well-off industry of Ahmedabad ltd) successively, under the rotating speed of 1000r/min, stir 20min; 1 part of film coalescence aid (alcohol ester-12, Eastman Chemical) during adding is filled a prescription successively again, 0.5 part of flow agent (3580, Switzerland's Ciba), 0.2 part of thickening material (DSX3290, Shenzhen Hai Chuan chemical industry ltd), stirring promptly makes aqueous fire-proof coating.
The supporting finish paint of water-based is used to be sprayed on the surface of aqueous fire-proof coating, and frie retardant coating is played a protective role.The aqueous fire-proof coating that present embodiment is made divides some roads to brush on the steel plate of having handled, and concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ, and performance is as shown in table 1.
Embodiment 3:
Under the rotating speed of 500r/min, the tap water in the adding prescription is 17 parts successively, 6 parts of frostproofers (Ucar 35, DOW Chemical); 0.2 part of Antisepticize and mildew preventive (EPW, Britain's Sol chemistry), 0.4 part of wetting dispersing agent A (Hydropalat 875, Shenzhen Hai Chuan chemical industry ltd); 1.2 parts of wetting dispersing agent B (Orotan1288, U.S. Rhom and Hass), 0.5 part of skimmer (FoamStarA36, section is peaceful); 5min is stirred in 0.2 part of pH regulator agent (AMP-95, U.S. ANGUS), and it is subsequent use to make premix;
Under the rotating speed of 800r/min, the tetramethylolmethane (600 orders, Qingdao novel material sci-tech industrial park Development Co., Ltd) in the adding prescription is 8 parts successively; 14 parts of trimeric cyanamides (400 orders, Jinan gold are full of safe chemical industry ltd), the ammonium polyphosphate (polymerization degree polymerization degree＞1000; General plug furan (Qingyuan City) phosphorus chemistry ltd) 22 part; 5 parts of fire-proof packings (agalmatolite, the nonmetal development company in the South Sea, Guangdong Province) stir 10min in advance; Changing over to then in the sand milling jar, is under the 3500r/min sand milling condition at rotating speed, and high speed sand milling 2h reaches below 50 μ until fineness; Change in the dispersion tank, stir about 5min under the 900r/min rotating speed promptly gets the frie retardant coating pigment slurry again;
Under the rotating speed of 800r/min, in above-mentioned pigment slurry, add 30 parts of aqueous acrylic emulsions (BLJ-998AD, Shanghai Bao Lijia chemical industry ltd) successively, under the rotating speed of 1000r/min, stir 15min; 2 parts of film coalescence aid (alcohol ester-12, Eastman Chemical) during adding is filled a prescription successively again, 0.5 part of flow agent (3580, Switzerland's Ciba), 0.2 part of thickening material (WT-105A, Deuchem Co., Ltd.), stirring promptly makes aqueous fire-proof coating.
The supporting finish paint of water-based is used to be sprayed on the surface of aqueous fire-proof coating, and frie retardant coating is played a protective role.The aqueous fire-proof coating that present embodiment is made divides some roads to brush on the steel plate of having handled, and concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ, and performance is as shown in table 1.
Embodiment 4:
Under the rotating speed of 400r/min, the tap water in the adding prescription is 20 parts successively, 4 parts of frostproofers (Ucar 35, DOW Chemical); 0.4 part of Antisepticize and mildew preventive (EPW, Britain's Sol chemistry), 0.6 part of wetting dispersing agent A (PE-100, Shenzhen Hai Chuan chemical industry ltd); 1.2 parts of wetting dispersing agent B (SN-5040, Shenzhen Hai Chuan chemical industry ltd), 0.5 part of skimmer (Foamex815, TEGO company); 10min is stirred in 0.1 part of pH regulator agent (AMP-95, U.S. ANGUS), and it is subsequent use to make premix;
Under the rotating speed of 600r/min, the tetramethylolmethane (600 orders, Qingdao novel material sci-tech industrial park Development Co., Ltd) in the adding prescription is 7 parts successively; 13 parts of trimeric cyanamides (400 orders, Jinan gold are full of safe chemical industry ltd), the ammonium polyphosphate (polymerization degree polymerization degree＞1000; General plug furan (Qingyuan City) phosphorus chemistry ltd) 23 part; 7 parts of fire-proof packings (perlite, Xinyang Pingqiao District perlite at dawn Building Materials Factory) stir 10min in advance; Changing over to then in the sand milling jar, is under the 2500r/min sand milling condition at rotating speed, and high speed sand milling 2h reaches below 50 μ until fineness; Change in the dispersion tank, stir about 5min under the 700r/min rotating speed promptly gets the frie retardant coating pigment slurry again;
Under the rotating speed of 700r/min, in above-mentioned pigment slurry, add 27 parts of aqueous acrylic emulsions (996AD, the well-off industry of Ahmedabad ltd) successively, under the rotating speed of 800r/min, stir 20min; 2 parts of film coalescence aid (alcohol ester-12, Eastman Chemical) during adding is filled a prescription successively again, 0.4 part of flow agent (3580, Switzerland's Ciba), 0.1 part of thickening material (UN-641, Beijing Futesi Chemical Technology Co., Ltd.), stirring promptly makes aqueous fire-proof coating.
The supporting finish paint of water-based is used to be sprayed on the surface of aqueous fire-proof coating, and frie retardant coating is played a protective role.The aqueous fire-proof coating that present embodiment is made divides some roads to brush on the steel plate of having handled, and concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ, and performance is as shown in table 1.
Embodiment 5
Under the rotating speed of 500r/min, the tap water in the adding prescription is 20 parts successively, 6 parts of frostproofers (Ucar 35, DOW Chemical); 0.4 part of Antisepticize and mildew preventive (EPW, Britain's Sol chemistry), 0.6 part of wetting dispersing agent A (X-405, U.S. Rhom and Hass); 1.2 parts of wetting dispersing agent B (dispersant5050, the modest company of Taiwan moral), 0.5 part of skimmer (Foamex Airex 901W, TEGO company); 5min is stirred in 0.2 part of pH regulator agent (AMP-95, U.S. ANGUS), and it is subsequent use to make premix;
Under the rotating speed of 800r/min, the tetramethylolmethane (600 orders, Qingdao novel material sci-tech industrial park Development Co., Ltd) in the adding prescription is 7 parts successively; 15 parts of trimeric cyanamides (400 orders, Jinan gold are full of safe chemical industry ltd), the ammonium polyphosphate (polymerization degree polymerization degree＞1000; General plug furan (Qingyuan City) phosphorus chemistry ltd) 21 part; 9 parts of fire-proof packings (perlite, Xinyang Pingqiao District perlite at dawn Building Materials Factory) stir 10min in advance; Changing over to then in the sand milling jar, is under the 2500r/min sand milling condition at rotating speed, and high speed sand milling 1h reaches below 50 μ until fineness; Change in the dispersion tank, stir about 5min under the 900r/min rotating speed promptly gets the frie retardant coating pigment slurry again;
Under the rotating speed of 700r/min, in above-mentioned pigment slurry, add 30 parts of aqueous acrylic emulsions (BLJ-998AD Shanghai Bao Lijia chemical industry ltd) successively, under the rotating speed of 100r/min, stir 15min; 2 parts of film coalescence aid (alcohol ester-12, Eastman Chemical) during adding is filled a prescription successively again, 0.5 part of flow agent (3580, Switzerland's Ciba), 0.1 part of thickening material (WT-105A, Deuchem Co., Ltd.), stirring promptly makes aqueous fire-proof coating.
The supporting finish paint of water-based is used to be sprayed on the surface of aqueous fire-proof coating, and frie retardant coating is played a protective role.The aqueous fire-proof coating that present embodiment is made divides some roads to brush on the steel plate of having handled, and concrete operations are: the brushing first road coating earlier, wait surface drying after, brush second road again, brush altogether 7～8 times, till coat-thickness reaches (1.8 ± 0.2) mm; At last, spray supporting finish paint 1～2 time, its thickness is about 100 μ, and performance is as shown in table 1.
The testing method of these parameters in the table 1 is according to standard GB 14907-2002 the performance requriements of indoor super-thin steel structure fire-proof paint to be detected; Wherein the detection means of fire performance is to adopt the simple and easy fire-proofing of design voluntarily; The simulation big panel method, its test condition is following:
(1) the test sample plate coating down, the spout of alcohol blast burner is aimed at the central position of model, spout is about 7cm apart from the vertical range of model;
(2) central position, the back side of model contacts with thermopair, investigates the variation of steel plate back temperature;
(3) above thermopair heat transfer bar, press with wooden unit, guarantee that the point of contact of thermopair closely contacts with steel plate;
(4) for avoiding the influence of factors such as wind-force, weather, the whole test device is placed in the airtight carton;
(5) treat the alcohol blast burner flameholding after, move to model under, begin simultaneously with the stopwatch opening entry time.(regulation: steel plate back of the body temperature reaches the fire resistance period that 280 ℃ of used times are frie retardant coating)
The water super-thin steel structure fire-proof paint performance table that table 1 embodiment 1～5 is prepared
Annotate: water resistance test is after frie retardant coating sprays supporting finish paint, to carry out.
Visible by table 1; Each item physical performance index of the indoor water super-thin steel structure fire-proof paint of the present invention's preparation all can reach standard GB 14907-2002; Use with the aqueous finish paint matching operation, significantly improved the deficiency of frie retardant coating water resistance; Adopt simulation big panel method test fire performance, the fire endurance of frie retardant coating basically all reaches more than the 1.5h, and high energy reaches 2.1h, explains that it has excellent fire performance.
The indoor water super-thin steel structure fire-proof paint that the present invention is prepared; Safety and environmental protection, preparation technology is simple, especially the employing of novelty perlite as fire-proof packing; This greatly reduces the cost of frie retardant coating on the one hand; The more important thing is the hot expansibility that utilizes perlite special, it meets high temperature can expand formation " worm " shape structure, has delayed the transmission of heat to steel plate; It interts and in charring layer, the charcoal layer has been played the enhanced effect, and this makes frie retardant coating have excellent fire performance.Under triple advantages of environmental protection, cost and fire performance, this product can replace present solvent-borne type frie retardant coating, is with a wide range of applications and marketable value.
Claims (8)
1. indoor water super-thin steel structure fire-proof paint; It is characterized in that; By weight percentage, its composition of raw materials is made up of following component: tap water 17～20%, aqueous acrylic emulsion 25～30%, expandable flame retardant system 38～45%, fire-proof packing 5～10%, wetting dispersing agent A 0.4～0.6%, wetting dispersing agent B 0.8～1.2%, frostproofer 4～6%, skimmer 0.3～0.5%, film coalescence aid 1～2%, pH regulator agent 0.1～0.2%, flow agent 0.4～0.5%, thickening material 0.1～0.2% and Antisepticize and mildew preventive 0.2～0.4%;
Said aqueous acrylic emulsion is organic siloxane modified ACRYLIC EMULSION;
Said expandable flame retardant system is that tetramethylolmethane, trimeric cyanamide and ammonium polyphosphate are 5～6: 10～11 according to weight ratio: the mixture of 17～18 compositions;
Said fire-proof packing is one or more of perlite, glass powder and agalmatolite;
Said wetting dispersing agent A is at least a in cationic wetting agent, the nonionogenic tenside; Said cationic wetting agent is Hydropalat 875; Said non-ionic wetting agent is X-405, PE-100 or Hydropalat 436;
Said wetting dispersing agent B is at least a in polyvalent carboxylic acid's salt base polymer, the polyacrylate; Said polyvalent carboxylic acid's salt base polymer is SN-5020, SN-5027, SN-5040 or 731A; Said polyacrylate is Orotan1288, dispersant5050 or dispersant5240;
Said thickening material is a non-ionic hydrophobic modified polyurethane block polymer, contains hydrophilic radical and hydrophobic grouping on the molecular chain simultaneously;
Said skimmer is Foamex815, Foamex 8030, Foamex Airex 901W, Defomer 155, FoamStarA10, FoamStar A12, FoamStar A34 or FoamStar A36;
Said film coalescence aid is an alcohol ester-12.
2. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said organic siloxane modified ACRYLIC EMULSION is 996AD or BLJ-998AD.
3. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said Antisepticize and mildew preventive is SR1138 or EPW type Antisepticize and mildew preventive.
4. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said frostproofer is a Ucar 35.
5. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said flow agent is 3580 type flow agents.
6. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said pH regulator agent is the AMP-95pH regulator.
7. indoor water super-thin steel structure fire-proof paint according to claim 1 is characterized in that: said thickening material is UN-643, UN-641, DSX3116, DSX3290 or WT-105A.
8. one kind prepares the described indoor water super-thin steel structure fire-proof paint method of claim 1, it is characterized in that, comprises the steps and processing condition:
(1) under 400～500r/min rotating speed agitation condition; Tap water, frostproofer 4-6%, wetting dispersing agent A0.4～0.6%, wetting dispersing agent B0.8～1.2%, skimmer 0.3～0.5%, Antisepticize and mildew preventive 0.2～0.4%, the pH regulator agent 0.1～0.2% of adding 17～20%; Stir 5～10min, it is subsequent use to make premix;
(2) under 600～800r/min rotating speed agitation condition, add expandable flame retardant system 38～45%, fire-proof packing 5～10%, stir 5-20min in advance; Changing over to then in the sand milling jar, is under 2500～3500r/min sand milling condition at rotating speed, and high speed sand milling 1～2h reaches below 50 μ until fineness; Change in the dispersion tank, under 700～900r/min rotating speed, stir 4-10min, promptly get the frie retardant coating pigment slurry;
(3) under 700～800r/min rotating speed agitation condition; Said frie retardant coating pigment slurry is joined in the aqueous acrylic emulsion 25～30%; Under 800～1000r/min speed conditions, stir 15～20min, add film coalescence aid 1～2%, flow agent 0.4～0.5%, thickening material 0.1～0.2% in the prescription again, stirring gets final product; Place slaking 30～60min, make indoor water super-thin steel structure fire-proof paint.
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