CN103820000A - Fireproof coating for steel-structured building, preparation method of fireproof coating and coating technology - Google Patents
Fireproof coating for steel-structured building, preparation method of fireproof coating and coating technology Download PDFInfo
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- CN103820000A CN103820000A CN201310496877.XA CN201310496877A CN103820000A CN 103820000 A CN103820000 A CN 103820000A CN 201310496877 A CN201310496877 A CN 201310496877A CN 103820000 A CN103820000 A CN 103820000A
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Abstract
The invention discloses a fireproof coating for a steel-structured building. Chlorinated rubber modified epoxy resin is used as a main film former, and silicone acrylic emulsion is used as an auxiliary film former; the fireproof coating is prepared from the following raw materials in percentage by weight: 26 percent of the chlorinated rubber modified epoxy resin, 9 percent of the silicone acrylic emulsion, 28 percent of ammonium polyphosphate, 8 percent of dipentaerythritol, 6 percent of melamine, 6 percent of expanded graphite, 1 percent of nano magnesia powder, 15 percent of deionized water and 1 percent of an additive. The ultrathin fireproof coating for the steel structure has the advantages of high performance, strong adhesive force, high weather resistance and the like. The invention further relates to a preparation method for the fireproof coating and a technology for coating the steel structure.
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 good advantage such as ductility and shock resistance and be used in building trade by increasingly extensive, has especially demonstrated powerful vitality at the aspect such as Super High and long span building.But the resistivity against fire of steel construction is very poor, very easily heat conduction, in the time that self temperature exceedes 540 degrees Celsius, its physical strength almost completely loses.Domestic and international multiple steel construction fire cases all proves, and in 20 minutes after presence of fire, steel building all can be crumpled and collapse by burning.Therefore, the fire safety problem of steel building enjoys common people's concern.
On steel structure surface, brushing or sprayed fire proofing material, can play fire-proof and thermal-insulation effect, can prevent that steel construction from heating up rapidly and reducing intensity in fire, therefore becomes 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 that possesses the advantages such as high-performance, strong adhesion, good weatherability.Particularly, frie retardant coating of the present invention selects chlorinated rubber modified epoxy as main film forming matter, using organosilicon crylic acid latex as inferior film forming matter; Select ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite as becoming charcoal system; Described frie retardant coating represents by weight percentage, and filling a prescription is: chlorinated rubber modified epoxy 26%, organosilicon crylic acid latex 9%, ammonium polyphosphate 28%, dipentaerythritol 8%, 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 as follows coating gross weight ratio: ammonium polyphosphate 28%, dipentaerythritol 8%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15% mixes, on ball mill, grind, while reaching predetermined fineness, filter discharging, then join in dispersion tank, now add the auxiliary agent that accounts for gross weight ratio 1%, after the speed dispersed with stirring of 3500 rpms 25 minutes, add base-material, base-material comprises the chlorinated rubber modified epoxy and 9% organosilicon crylic acid latex that account for gross weight ratio 26%, after 35 minutes, filter discharging with the speed dispersed with stirring of 800 rpms again.
Predetermined fineness is preferably lower than 85 microns.
While experiment showed, coat-thickness 2.0mm, fire endurance has reached 109min, meets GB14907-2002 requirement.
The invention still further relates to a kind of technique of steel construction being carried out to application; it comprises the steps: (1) Coating Pretreatment: removing surface, base material polishing, rust cleaning; with palm fiber brush, perching knife and sand paper cleaning welding slag, dirt settling splashes; clean metal surface is to the visible grease of nothing 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 μ m; (2) be coated with aqueous inorganic zinc rich primer: 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 ℃, spray thickness (dry film) 65～70 μ m one time; (3) be coated with epoxy micaceous iron intermediate coat: 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 ℃, jet angle 67～78 degree, spray voltage 27～31V, spraying current 210～245A, application twice, per pass thickness (dry film) 50～65 μ m; (4) be coated with arbitrary obtained frie retardant coating according to the arbitrary described or claim 3-4 of claim 1-2: manual brushing or mechanically spraying, per pass coating thickness 850 μ m(dry films), Gong Tu tri-roads; (5) be coated with two component polyurethane finish paints: 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 ℃, jet angle 66～77 degree, spray voltage 28～32V, spraying current 230～242A, application one, per pass thickness (dry film) 38～48 μ m; (6) be coated with fluorine carbon metal finish paint: 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 ℃, jet angle 68～79 degree, spray voltage 28～31V, spraying current 230～245A, application twice; Per pass thickness (dry film) 35～40 μ m.
Frie retardant coating according to the present invention has good fire resistance, can play a very good protection for steel construction.
Embodiment
Select chlorinated rubber modified epoxy as main film forming matter, using organosilicon crylic acid latex as inferior film forming matter, utilized the high and good advantage of organosilicon crylic acid latex charring layer intensity of chlorinated rubber modified epoxy 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%, becomes charcoal system 48%, nanometer magnesia powder (40-45 nanometer) 1%, deionized water 15%, auxiliary agent 1%.
Preferably, represent by weight percentage: chlorinated rubber modified epoxy 26%, organosilicon crylic acid latex 9%, ammonium polyphosphate 28%, dipentaerythritol 8%, 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.
In the time 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, on ball mill, grind, while reaching predetermined fineness (preferably lower than 85 microns), filter discharging, then join in dispersion tank, now add the auxiliary agent of aforementioned ratio, after the speed dispersed with stirring of 3500 rpms 25 minutes, add base-material, after 35 minutes, filter discharging with the speed dispersed with stirring of 800 rpms again and can obtain steel structure fire-proof paint of the present invention.
While experiment showed, coat-thickness 2.0mm, fire endurance has reached 109min, meets GB14907-2002 requirement.
The technique of utilizing frie retardant coating according to the present invention steel construction to be carried out to application; it comprises the steps: Coating Pretreatment: removing surface, base material polishing, rust cleaning; with palm fiber brush, perching knife and sand paper cleaning welding slag, dirt settling splashes; clean metal surface is to the visible grease of nothing 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 μ m; Be coated with aqueous inorganic zinc 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 more than 5 ℃, sprays one time higher than dew point, thickness (dry film) 65～70 μ m, preferably surface drying time 50 minutes under standard thickness 32 degrees Celsius time, does 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: more than 4.5 ℃, jet angle 67～78 is spent, spray voltage 27～31V higher than dew point, spraying current 210～245A, preferably surface drying time 26 minutes when 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 μ m; Be coated with according to frie retardant coating of the present invention: manual brushing or mechanically spraying, per pass coating thickness 850 μ m(dry films), preferably surface drying time 25 minutes under standard thickness when lower 32 degrees Celsius of per pass film standard thickness, setting time 3.6 hours, do solid work 6 days time, spray altogether three roads; Be coated with two component polyurethane finish paints: 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 ℃, jet angle 66～77 degree, spray voltage 28～32V, spraying current 230～242A, preferably surface drying time 48 minutes when lower 27 degrees Celsius of one film standard thickness; Application one, per pass thickness (dry film) 38～48 μ m; 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 ℃, jet angle 68～79 degree, spray voltage 28～31V, spraying current 230～245A, preferably surface drying time 50 minutes when lower 27 degrees Celsius of one film standard thickness, application twice; Per pass thickness (dry film) 35～40 μ m.
Those skilled in the art can make and replacing or modification content of the present invention according to content disclosed by the invention and the art technology of grasping; but these replacements or modification should not be considered as departing from the present invention's design, and these replacements or modification are all in the claimed interest field of the present invention.
Claims (5)
1. for a frie retardant coating for steel building, select chlorinated rubber modified epoxy as main film forming matter, using organosilicon crylic acid latex as inferior film forming matter; Select ammonium polyphosphate, dipentaerythritol, trimeric cyanamide and expanded graphite as becoming charcoal system; Described frie retardant coating represents by weight percentage, and filling a prescription is: chlorinated rubber modified epoxy 26%, organosilicon crylic acid latex 9%, ammonium polyphosphate 28%, dipentaerythritol 8%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15%, auxiliary agent 1%.
2. frie retardant coating according to claim 1, is characterized in that described auxiliary agent comprises defoamer, dispersion agent, membrane-forming agent and mould inhibitor.
3. the making method for the frie retardant coating of 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 as follows coating gross weight ratio: ammonium polyphosphate 28%, dipentaerythritol 8%, trimeric cyanamide 6%, expanded graphite 6%, nanometer magnesia powder 1%, deionized water 15% mixes, on ball mill, grind, while reaching predetermined fineness, filter discharging, then join in dispersion tank, now add the auxiliary agent that accounts for gross weight ratio 1%, after the speed dispersed with stirring of 3500 rpms 25 minutes, add base-material, base-material comprises the chlorinated rubber modified epoxy and 9% organosilicon crylic acid latex that account for gross weight ratio 26%, after 35 minutes, filter discharging with the speed dispersed with stirring of 800 rpms again.
4. the making method of frie retardant coating according to claim 3, is characterized in that predetermined fineness is preferably lower than 85 microns.
5. a technique of steel construction being carried out to application, is characterized in that comprising the steps:
(1) Coating Pretreatment: removing surface, base material polishing, rust cleaning; with palm fiber brush, perching knife and sand paper cleaning welding slag, dirt settling splashes; clean metal surface is to the visible grease of nothing 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 μ m;
(2) be coated with aqueous inorganic zinc rich primer: 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 ℃, spray thickness (dry film) 65～70 μ m one time;
(3) be coated with epoxy micaceous iron intermediate coat: 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 ℃, jet angle 67～78 degree, spray voltage 27～31V, spraying current 210～245A, application twice, per pass thickness (dry film) 50～65 μ m;
(4) be coated with arbitrary described or arbitrary prepared frie retardant coating of claim 3-4 according to claim 1-2: manual brushing or mechanically spraying, per pass coating thickness 850 μ m(dry films), Gong Tu tri-roads;
(5) be coated with two component polyurethane finish paints: 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 ℃, jet angle 66～77 degree, spray voltage 28～32V, spraying current 230～242A, application one, per pass thickness (dry film) 38～48 μ m;
(6) be coated with fluorine carbon metal finish paint: 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 ℃, jet angle 68～79 degree, spray voltage 28～31V, spraying current 230～245A, application twice; Per pass thickness (dry film) 35～40 μ m.
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| CN201310496877.XA CN103820000B (en) | 2013-10-21 | 2013-10-21 | Steel construction is carried out to the technique of application |
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| CN201310496877.XA CN103820000B (en) | 2013-10-21 | 2013-10-21 | Steel construction is carried out to the technique of application |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413993A (en) * | 2015-12-20 | 2016-03-23 | 安徽伟宏钢结构集团股份有限公司 | Steel structure fluorocarbon paint coating process |
| CN107268440A (en) * | 2017-05-23 | 2017-10-20 | 中建钢构有限公司 | A kind of anticorrosive coating construction method of bicycle expressway steel construction |
| CN109233643A (en) * | 2018-10-17 | 2019-01-18 | 南京展拓消防设备有限公司 | Indoor acid and alkali-resistance fire-resistant coating for steel structure |
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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 |
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Patent Citations (4)
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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 |
| CN102304315A (en) * | 2011-07-13 | 2012-01-04 | 杭州宁致合成材料有限公司 | Organic silicon and phosphoric acid ester modified super-thin aqueous fireproofing paint and production method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105413993A (en) * | 2015-12-20 | 2016-03-23 | 安徽伟宏钢结构集团股份有限公司 | Steel structure fluorocarbon paint coating process |
| CN107268440A (en) * | 2017-05-23 | 2017-10-20 | 中建钢构有限公司 | A kind of anticorrosive coating construction method of bicycle expressway steel construction |
| CN109233643A (en) * | 2018-10-17 | 2019-01-18 | 南京展拓消防设备有限公司 | Indoor acid and alkali-resistance fire-resistant coating for steel structure |
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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. |
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