CN103805008B - A kind of technique of steel construction being carried out to flame-proof finishing - Google Patents
A kind of technique of steel construction being carried out to flame-proof finishing Download PDFInfo
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- CN103805008B CN103805008B CN201310496594.5A CN201310496594A CN103805008B CN 103805008 B CN103805008 B CN 103805008B CN 201310496594 A CN201310496594 A CN 201310496594A CN 103805008 B CN103805008 B CN 103805008B
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Abstract
A kind of frie retardant coating for steel building, select acrylic resin as main film forming matter, using benzene emulsion as secondary film forming matter, described frie retardant coating represents by weight percentage, and filling a prescription is: acrylic resin 25%, benzene emulsion 10%, ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15%, auxiliary agent 1%.Super-thin steel structure fire-proof paint of the present invention possesses the advantages such as high-performance, strong adhesion, good weatherability.The present invention also relates to a kind of making method of the frie retardant coating for steel building and steel construction carried out to the technique of application.
Description
Technical field
The present invention relates to a kind of frie retardant coating for steel building, also relate to a kind of manufacture method of the frie retardant coating for steel building and the technique to steel structure coating.
Background technology
Steel construction has that quality is light, intensity is high, easy construction and have the advantages such as good ductility and shock resistance and be used in building trade by increasingly extensive, especially in Super High and long span building etc., shows powerful vitality.But the resistivity against fire of steel construction is very poor, very easily heat conduction, when own temperature is more than 540 degrees Celsius, its physical strength almost completely loses.Domestic and international multiple steel construction fire cases proves all, and within 20 minutes after presence of fire, steel building all can be crumpled by burning and collapse.Therefore, the fire safety problem of steel building enjoys the concern of common people.
On steel structure surface, brushing or sprayed fire proofing material, can play fire-proof and thermal-insulation effect, can prevent steel construction rapid temperature increases and reduce intensity in a fire, therefore become current a kind of important steel structure fireproof protection measure.
Summary of the invention
The present invention aims to provide a kind of super-thin steel structure fire-proof paint possessing the advantages such as high-performance, strong adhesion, good weatherability.Particularly, frie retardant coating of the present invention selects acrylic resin as main film forming matter, using benzene emulsion as secondary film forming matter; Select ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite as becoming charcoal system; Described frie retardant coating represents by weight percentage, fills a prescription to be: acrylic resin 25%, benzene emulsion 10%, ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15%, auxiliary agent 1%.
Preferably, described auxiliary agent comprises defoamer, dispersion agent, membrane-forming agent and mould inhibitor.
The invention still further relates to a kind of making method of the frie retardant coating for steel building, comprise the steps: first by ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite, and nanometer magnesia powder, deionized water is according to accounting for coating gross weight ratio as follows: ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15% mixes, ball mill grinds, discharging is filtered when reaching predetermined fineness, then join in dispersion tank, now add the auxiliary agent accounting for gross weight ratio 1%, after the speed dispersed with stirring 25 minutes of 3500 rpms, add base-material, base-material comprises the acrylic resin and 10% benzene emulsion that account for gross weight ratio 25%, discharging is filtered after 35 minutes again with the speed dispersed with stirring of 800 rpms.
Predetermined fineness is preferably lower than 85 microns.
Experiment proves, during coat-thickness 2.0mm, fire endurance reaches 97min, meets GB14907-2002 requirement.
The invention still further relates to a kind of technique of steel construction being carried out to application, Coating Pretreatment that it comprises the steps: (1): removing surface, base material polishing, rust cleaning, with the cleaning of palm fiber brush, perching knife and sand paper welding slag, splashing dirt settling, clean metal surface is extremely without visible grease and foreign material, with angle grinding machine and sand papering rust cleaning, weld grinding is smooth, edge chamfering R=1.5 ~ 2.5mm, roughness 50 ~ 65 μm; (2) waterborne inorganic einc-rich primer is coated with: airless spraying, pressure ratio 35:1, spray gun distance 350 ~ 420mm, jet angle 75 ~ 80 degree, spray voltage 26 ~ 30V, spraying current 200 ~ 240A, nozzle diameter: 0.48 ~ 0.56mm, ambient moisture: < 76%, surface of steel plate temperature is higher than dew point more than 5 DEG C, spray one time, thickness (dry film) 65 ~ 70 μm; (3) epoxy micaceous iron intermediate coat is coated with: adopt airless spraying, pressure ratio 37:1, spray gun distance 270 ~ 310mm, nozzle diameter: 0.47 ~ 0.52mm, envrionment temperature: < 75%, surface of steel plate temperature: higher than dew point more than 4.5 DEG C, jet angle 67 ~ 78 degree, spray voltage 27 ~ 31V, spraying current 210 ~ 245A, application twice, per pass thickness (dry film) 50 ~ 65 μm; (4) be coated with according to arbitrary obtained the frie retardant coating of the arbitrary described or claim 3-4 of claim 1-2: manual brushing or mechanically spraying, per pass coating thickness 850 μm (dry film), Gong Tu tri-road; (5) two component polyurethane finish paint is coated with: adopt airless spraying, pressure ratio 46:1, spray gun distance 280 ~ 350mm, nozzle diameter: 0.46 ~ 0.51mm, envrionment temperature: < 75%, surface of steel plate temperature: higher than dew point more than 5.5 DEG C, jet angle 66 ~ 77 degree, spray voltage 28 ~ 32V, spraying current 230 ~ 242A, application one, per pass thickness (dry film) 38 ~ 48 μm; (6) fluorine carbon metal finish paint is coated with: adopt airless spraying, pressure ratio 50:1, spray gun distance 300 ~ 450mm, nozzle diameter: 0.48 ~ 0.50mm, envrionment temperature: < 76%, surface of steel plate temperature: higher than dew point more than 6.5 DEG C, jet angle 68 ~ 79 degree, spray voltage 28 ~ 31V, spraying current 230 ~ 245A, application twice; Per pass thickness (dry film) 35 ~ 40 μm.
Frie retardant coating according to the present invention has good fire resistance, can play a very good protection for steel construction.
Embodiment
Select acrylic resin as main film forming matter, using benzene emulsion as secondary film forming matter, make use of the high and advantage that benzene emulsion charring layer intensity is good of acrylic resin foam expansion.
Select ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite as becoming charcoal system.
Formula and the making method of frie retardant coating of the present invention are specific as follows:
Represent by weight percentage: film forming matter (base-material) 35%, become charcoal system 48%, nanometer magnesia powder (40-45 nanometer) 1%, deionized water 15%, auxiliary agent 1%.
Preferably, represent by weight percentage: acrylic resin 25%, benzene emulsion 10%, ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15%, auxiliary agent 1%.
Auxiliary agent comprises defoamer, dispersion agent, membrane-forming agent and mould inhibitor.
When making frie retardant coating of the present invention, first by ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite, and nanometer magnesia powder (40-45 nanometer), deionized water mixes, ball mill grinds, discharging is filtered when reaching predetermined fineness (preferably lower than 85 microns), then join in dispersion tank, now add the auxiliary agent of aforementioned ratio, after the speed dispersed with stirring 25 minutes of 3500 rpms, add base-material, filter discharging after 35 minutes with the speed dispersed with stirring of 800 rpms again and can obtain steel structure fire-proof paint of the present invention.
Experiment proves, during coat-thickness 2.0mm, fire endurance reaches 97min, meets GB14907-2002 requirement.
Frie retardant coating according to the present invention is utilized steel construction to be carried out to the technique of application, it comprises the steps: Coating Pretreatment: removing surface, base material polishing, rust cleaning, with the cleaning of palm fiber brush, perching knife and sand paper welding slag, splashing dirt settling, clean metal surface is extremely without visible grease and foreign material, with angle grinding machine and sand papering rust cleaning, weld grinding is smooth, preferably, edge chamfering R=1.5 ~ 2.5mm, roughness 50 ~ 65 μm; Be coated with waterborne inorganic einc-rich primer: airless spraying, preferably pressure ratio 35:1, spray gun distance 350 ~ 420mm, jet angle 75 ~ 80 degree, spray voltage 26 ~ 30V, spraying current 200 ~ 240A, nozzle diameter: 0.48 ~ 0.56mm, ambient moisture: < 76%, surface of steel plate temperature, higher than dew point more than 5 DEG C, sprays one time, thickness (dry film) 65 ~ 70 μm, preferably 32 degrees Celsius time standard thickness under surface drying time 50 minutes, do solid work 4 days time; Be coated with epoxy micaceous iron intermediate coat: adopt airless spraying, preferably pressure ratio 37:1, spray gun distance 270 ~ 310mm, nozzle diameter: 0.47 ~ 0.52mm, envrionment temperature: < 75%, surface of steel plate temperature: higher than dew point more than 4.5 DEG C, jet angle 67 ~ 78 degree, spray voltage 27 ~ 31V, spraying current 210 ~ 245A, preferably surface drying time 26 minutes during lower 27 degrees Celsius of one film standard thickness, setting time 5.5 hours, does solid work 6.5 days time; Application twice, per pass thickness (dry film) 50 ~ 65 μm; Be coated with according to frie retardant coating of the present invention: manual brushing or mechanically spraying, per pass coating thickness 850 μm (dry film), preferably surface drying time 25 minutes under standard thickness during lower 32 degrees Celsius of per pass film standard thickness, setting time 3.6 hours, do solid work 6 days time, spray three roads altogether; Be coated with two component polyurethane finish paint: adopt airless spraying, preferably pressure ratio 46:1, spray gun distance 280 ~ 350mm, nozzle diameter: 0.46 ~ 0.51mm, envrionment temperature: < 75%, surface of steel plate temperature: higher than dew point more than 5.5 DEG C, jet angle 66 ~ 77 degree, spray voltage 28 ~ 32V, spraying current 230 ~ 242A, preferably surface drying time 48 minutes during lower 27 degrees Celsius of one film standard thickness; Application one, per pass thickness (dry film) 38 ~ 48 μm; Be coated with fluorine carbon metal finish paint: adopt airless spraying, preferably pressure ratio 50:1, spray gun distance 300 ~ 450mm, nozzle diameter: 0.48 ~ 0.50mm, envrionment temperature: < 76%, surface of steel plate temperature: higher than dew point more than 6.5 DEG C, jet angle 68 ~ 79 degree, spray voltage 28 ~ 31V, spraying current 230 ~ 245A, preferably surface drying time 50 minutes during lower 27 degrees Celsius of one film standard thickness, application twice; Per pass thickness (dry film) 35 ~ 40 μm.
Those skilled in the art can make replacement or modification according to content disclosed by the invention and the art technology grasped to content of the present invention; but these replacements or modification should not be considered as disengaging the present invention design, and these replacements or modification are all in the interest field of application claims protection.
Claims (1)
1. steel construction is carried out to a technique for application, it is characterized in that comprising the steps:
(1) Coating Pretreatment: removing surface, base material polishing, rust cleaning, with the cleaning of palm fiber brush, perching knife and sand paper welding slag, splashing dirt settling, clean metal surface is extremely without visible grease and foreign material, with angle grinding machine and sand papering rust cleaning, weld grinding is smooth, edge chamfering R=1.5 ~ 2.5mm, roughness 50 ~ 65 μm;
(2) waterborne inorganic einc-rich primer is coated with: airless spraying, pressure ratio 35:1, spray gun distance 350 ~ 420mm, jet angle 75 ~ 80 degree, spray voltage 26 ~ 30V, spraying current 200 ~ 240A, nozzle diameter: 0.48 ~ 0.56mm, ambient moisture: < 76%, surface of steel plate temperature is higher than dew point more than 5 DEG C, spray one time, dry film thickness 65 ~ 70 μm;
(3) epoxy micaceous iron intermediate coat is coated with: adopt airless spraying, pressure ratio 37:1, spray gun distance 270 ~ 310mm, nozzle diameter: 0.47 ~ 0.52mm, ambient moisture: < 75%, surface of steel plate temperature: higher than dew point more than 4.5 DEG C, jet angle 67 ~ 78 degree, spray voltage 27 ~ 31V, spraying current 210 ~ 245A, application twice, per pass build 50 ~ 65 μm;
(4) frie retardant coating is coated with: manual brushing or mechanically spraying, per pass film build 850 μm, Gong Tu tri-road, frie retardant coating selects acrylic resin as main film forming matter, using benzene emulsion as secondary film forming matter, select ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite as becoming charcoal system, described frie retardant coating represents by weight percentage, fills a prescription to be: acrylic resin 25%, benzene emulsion 10%, ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15%, auxiliary agent 1%, the making method of frie retardant coating comprises the steps: first by ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite, and nanometer magnesia powder, deionized water is according to accounting for coating gross weight ratio as follows: ammonium polyphosphate 24%, dipentaerythritol 12%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15% mixes, ball mill grinds, discharging is filtered when reaching predetermined fineness, then join in dispersion tank, now add the auxiliary agent accounting for gross weight ratio 1%, after the speed dispersed with stirring 25 minutes of 3500 rpms, add base-material, base-material comprises the acrylic resin and 10% benzene emulsion that account for gross weight ratio 25%, discharging is filtered after 35 minutes again with the speed dispersed with stirring of 800 rpms,
(5) two component polyurethane finish paint is coated with: adopt airless spraying, pressure ratio 46:1, spray gun distance 280 ~ 350mm, nozzle diameter: 0.46 ~ 0.51mm, ambient moisture: < 75%, surface of steel plate temperature: higher than dew point more than 5.5 DEG C, jet angle 66 ~ 77 degree, spray voltage 28 ~ 32V, spraying current 230 ~ 242A, application one, per pass build 38 ~ 48 μm;
(6) fluorine carbon metal finish paint is coated with: adopt airless spraying, pressure ratio 50:1, spray gun distance 300 ~ 450mm, nozzle diameter: 0.48 ~ 0.50mm, ambient moisture: < 76%, surface of steel plate temperature: higher than dew point more than 6.5 DEG C, jet angle 68 ~ 79 degree, spray voltage 28 ~ 31V, spraying current 230 ~ 245A, application twice; Per pass build 35 ~ 40 μm.
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| CN104693928A (en) * | 2015-02-28 | 2015-06-10 | 济宁利特纳米技术有限责任公司 | Graphene fireproof paint as well as preparation method and application method thereof |
| CN105400308A (en) * | 2015-12-06 | 2016-03-16 | 康明哲 | Fireproof coating and preparing method thereof |
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| CN102108233A (en) * | 2011-03-15 | 2011-06-29 | 厦门大学 | Water-borne ultrathin intumescent fire retardant coating with three-dimensional network structure for steel structure |
| CN102838907A (en) * | 2012-08-24 | 2012-12-26 | 华南理工大学 | Waterborne ultra-thin steel structure fire retardant coating and preparation method thereof |
| CN102911566A (en) * | 2012-10-26 | 2013-02-06 | 清远市普塞呋磷化学有限公司 | Waterproof efficient intumescent fire retardant coating |
| CN103045037A (en) * | 2012-12-14 | 2013-04-17 | 中盈长江国际新能源投资有限公司 | Water-based expandable fireproof steel structure coating and preparation method |
| CN103045047A (en) * | 2012-12-21 | 2013-04-17 | 厦门大学 | Water-based ultrathin expansion type formed steel construction fire retardant coating based on expansible graphite and crystal whisker system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108233A (en) * | 2011-03-15 | 2011-06-29 | 厦门大学 | Water-borne ultrathin intumescent fire retardant coating with three-dimensional network structure for steel structure |
| CN102838907A (en) * | 2012-08-24 | 2012-12-26 | 华南理工大学 | Waterborne ultra-thin steel structure fire retardant coating and preparation method thereof |
| CN102911566A (en) * | 2012-10-26 | 2013-02-06 | 清远市普塞呋磷化学有限公司 | Waterproof efficient intumescent fire retardant coating |
| CN103045037A (en) * | 2012-12-14 | 2013-04-17 | 中盈长江国际新能源投资有限公司 | Water-based expandable fireproof steel structure coating and preparation method |
| CN103045047A (en) * | 2012-12-21 | 2013-04-17 | 厦门大学 | Water-based ultrathin expansion type formed steel construction fire retardant coating based on expansible graphite and crystal whisker system |
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Effective date of registration: 20170724 Address after: Licheng Town East Street Liyang city 213300 Jiangsu city of Changzhou province No. 182 Patentee after: Liyang Technology Development Center Address before: Li Town of Liyang City, Jiangsu province 213300 Changzhou City Dongmen Street No. 67 Patentee before: LIYANG ZHEDA ACADEMIA RESEARCH SERVICE CENTER CO., LTD. |