CN102691405A - Construction method for spraying foaming polyurethane heat-preservation and water-proof layer - Google Patents
Construction method for spraying foaming polyurethane heat-preservation and water-proof layer Download PDFInfo
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- CN102691405A CN102691405A CN2012101810007A CN201210181000A CN102691405A CN 102691405 A CN102691405 A CN 102691405A CN 2012101810007 A CN2012101810007 A CN 2012101810007A CN 201210181000 A CN201210181000 A CN 201210181000A CN 102691405 A CN102691405 A CN 102691405A
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Abstract
The invention discloses a construction method for spraying a foaming polyurethane heat-preservation and water-proof layer, and the method comprises the following steps of: 1) firstly, turning on an air valve of a spray gun, turning a material valve of the spray gun, and evenly spraying by a nozzle which is perpendicular to a roof; 2) controlling the distance between the nozzle and the roof at 550-600mm, keeping the air pressure of the air at 0.7-0.8MPa, continuously keeping, and keeping the spraying thickness at 8-10mm; 3) after 20-25 minutes, controlling the distance between the nozzle and the roof at 600-650mm, keeping the air pressure of the air at 0.6-0.7MPa, and keeping the spraying thickness at 14-16mm; 4) controlling the distance between the nozzle and the roof at 600-650mm, keeping the air pressure of the air at 0.6-0.7MPa, and keeping the spraying thickness at 14-16mm; and 5) firstly, turning off the material valve, blowing off material remained in a pipeline, stopping compacting the air valve, and curing for 48-72h. Due to spraying in a layering way, the construction method effectively controls the foaming thickness and the flatness; and due to a high-pressure spraying technology, the foaming compactness can be improved. The polyurethane is applicable to the roof, so that the load of the can be reduced, the thickness of the roof can be reduced.
Description
Technical field
The present invention relates to a kind of insulation water-proof layer job practices, particularly a kind of spray coating foaming polyurethanes insulation water-proof layer job practices.
Background technology
Polyurethanes is the general designation that contains the macromolecular compound of repetition carbamate groups on the main chain.It is to be formed by organic diisocyanate or polyisocyanates and dihydroxy or polyol addition polymerization.It can be used for making plastics, rubber, fiber, hard and flex foam, bonding adhesive and coating etc.
Energy conservation has become an important state basic policy of Chinese society development, and building energy conservation occupies critical role in the system engineering of energy conservation, and it is one of effective way of building energy conservation that building is carried out roof heat insulation.
The polyurethanes roof heat insulation waterproofing system that hard bubbles is that collection insulation and waterproof are the good new type roof thermal-insulating waterproof system of a kind of combination property of one; Thermal and insulating performance is good; This has bright development prospect for realizing that the building energy conservation target is significant in building energy saving field.
But in the present construction technology, for foaming thickness, planeness, and the compactness of foaming is difficult to control, is unfavorable for guaranteeing the quality that sprays having weakened polyurethanes as the using value of insulation water-proof layer in building field.
Summary of the invention
Technical problem to be solved by this invention provides a kind of spray coating foaming polyurethanes insulation water-proof layer job practices, and this method can effectively be controlled the quality of spraying.
In order to solve above-mentioned technical problem, technical scheme of the present invention is:
A kind of spray coating foaming polyurethanes insulation water-proof layer job practices, it may further comprise the steps:
1) blast gate of spray gun is opened by elder generation, opens the Material valve of spray gun again, and the vertical roofing of the nozzle of spray gun at the uniform velocity moves and sprays;
2) spraying for the first time: the distance of nozzle and roofing is controlled between 550～600mm, and the air pressure of air remains on 0.7～0.8Mpa, and keeps not interrupting coating thickness 8-10mm;
3) for the first time spray 20-25 minute after, after first floor solidified, beginning is spraying for the second time: the distance of nozzle and roofing was controlled between 600～650mm, and the air pressure of air remains on 0.6～0.7Mpa, and coating thickness 14-16mm is not interrupted in maintenance;
4) for the second time spray 20-25 minute after, after the second layer solidified, beginning is spraying for the third time: the distance of nozzle and roofing was controlled between 600～650mm, and the air pressure of air remains on 0.6～0.7Mpa, and coating thickness 14-16mm is not interrupted in maintenance;
5) after spraying finishes for the third time, stop Material valve earlier, wait to remain in and stop compressed air valve again after ducted material blows off, and to the foamed polyurethane insulation water-proof layer slaking of spraying 48-72 hour.
The environment temperature of spraying is 10-35 ℃, and relative humidity is less than 80%.
Foamed polyurethane insulation water-proof layer surface finish deviation after the spraying is less than 5mm.
The density of the foamed polyurethane insulation water-proof layer after the spraying is 55-60Kg/m
3
The present invention utilizes the layering spraying, effectively control foaming thickness and planeness; Through the high pressure painting technology, improved the compactness of foaming.Layering spraying technology and high pressure painting technology complement each other, and break through traditional technology, form the roofing layer of high density, good planeness.Polyurethanes is used for roofing also can alleviate the roofing load, reduces roofing thickness.
This method easy construction, quick, technology, equipment are simple, make whole roofing have insulation, waterproof, trapping multi-functional concurrently, have good society, economic benefit, meet the state basic policy of energy conservation.
The specific embodiment
In in the spraying process, compressed-air actuated pressure has significant effects to the impression, compactness etc. of spraying.Should guarantee during spraying that air pressure remains within the normal scope.
Try spray work earlier before each operation.Open air during spraying earlier; Open material again; On-the-spot spraying application equipment is continuously adopted in construction, two kinds of raw materials is advanced flexible pipe through measuring pump get into the mixing chamber inner high voltage that booster pump, spray gun get into 0.0125 cubic centimeter again and mix the back spraying, and the feed liquid during beginning should be abandoned; After out-feed liquid to be painted is normal, can begin formal spraying operation.Compressed air keeps not interrupting in the spraying process, when construction intermittence or pressure are undesired, stops material earlier, treats to stop compressed air again after ducted material blows off.
Embodiment 1
1) blast gate of spray gun is opened by elder generation, opens the Material valve of spray gun again, and the vertical roofing of the nozzle of spray gun at the uniform velocity moves and sprays;
2) spraying for the first time: the distance of nozzle and roofing is controlled at 580mm, and the air pressure of air remains on 0.8Mpa, and keeps not interrupting coating thickness 10mm;
3) for the first time spray 20 minutes after, after first floor solidified, beginning is spraying for the second time: the distance of nozzle and roofing was controlled at 600mm, and the air pressure of air remains on 0.75Mpa, and coating thickness 16mm is not interrupted in maintenance;
4) for the second time spray 25 minutes after, after the second layer solidified, beginning is spraying for the third time: the distance of nozzle and roofing was controlled between the 600mm, and the air pressure of air remains on 0.6Mpa, and coating thickness 14mm is not interrupted in maintenance;
5) after spraying finishes for the third time, stop Material valve earlier, wait to remain in and stop compressed air valve again after ducted material blows off.
To the foamed polyurethane insulation water-proof layer slaking 72 hours of spraying, the polyurethanes thermal-insulating waterproof layer thickness that obtains is 40mm, and the surface finish deviation is 4mm, and density is 55Kg/m
3
Embodiment 2
1) blast gate of spray gun is opened by elder generation, opens the Material valve of spray gun again, and the vertical roofing of the nozzle of spray gun at the uniform velocity moves and sprays;
2) spraying for the first time: the distance of nozzle and roofing is controlled at 600mm, and the air pressure of air remains on 0.8Mpa, and keeps not interrupting coating thickness 8mm;
3) for the first time spray 20 minutes after, after first floor solidified, beginning is spraying for the second time: the distance of nozzle and roofing was controlled at 630mm, and the air pressure of air remains on 0.65Mpa, and coating thickness 14mm is not interrupted in maintenance;
4) for the second time spray 20 minutes after, after the second layer solidified, beginning is spraying for the third time: the distance of nozzle and roofing was controlled between the 600mm, and the air pressure of air remains on 0.6Mpa, and coating thickness 16mm is not interrupted in maintenance;
5) after spraying finishes for the third time, stop Material valve earlier, wait to remain in and stop compressed air valve again after ducted material blows off.
To the foamed polyurethane insulation water-proof layer slaking 60 hours of spraying, the polyurethanes thermal-insulating waterproof layer thickness that obtains is 38mm, and the surface finish deviation is 3.5mm, and density is 60Kg/m
3
Embodiment 3
1) blast gate of spray gun is opened by elder generation, opens the Material valve of spray gun again, and the vertical roofing of the nozzle of spray gun at the uniform velocity moves and sprays;
2) spraying for the first time: the distance of nozzle and roofing is controlled at 550mm, and the air pressure of air remains on 0.75Mpa, and keeps not interrupting coating thickness 9mm;
3) for the first time spray 25 minutes after, after first floor solidified, beginning is spraying for the second time: the distance of nozzle and roofing was controlled between the 650mm, and the air pressure of air remains on 0.7Mpa, and coating thickness 15mm is not interrupted in maintenance;
4) for the second time spray 20 minutes after, after the second layer solidified, beginning is spraying for the third time: the distance of nozzle and roofing was controlled between the 650mm, and the air pressure of air remains on 0.65Mpa, and coating thickness 15mm is not interrupted in maintenance;
5) after spraying finishes for the third time, stop Material valve earlier, wait to remain in and stop compressed air valve again after ducted material blows off.
To the foamed polyurethane insulation water-proof layer slaking 48 hours of spraying, the polyurethanes thermal-insulating waterproof layer thickness that obtains is 39mm, and the surface finish deviation is 2mm, and density is 58Kg/m
3
The environment temperature of the inventive method spraying is 10-35 ℃, and relative humidity is less than 80%.During less than 10 ℃, the interval between three sprayings should increase more than 5 minutes in environment temperature, to guarantee the quality of spraying.
The foregoing description does not limit the present invention in any way, and every employing is equal to the technical scheme that replacement or the mode of equivalent transformation obtain and all drops in protection scope of the present invention.
Claims (4)
1. spray coating foaming polyurethanes insulation water-proof layer job practices is characterized in that may further comprise the steps:
1) blast gate of spray gun is opened by elder generation, opens the Material valve of spray gun again, and the vertical roofing of the nozzle of spray gun at the uniform velocity moves and sprays;
2) spraying for the first time: the distance of nozzle and roofing is controlled between 550～600mm, and the air pressure of air remains on 0.7～0.8Mpa, and keeps not interrupting coating thickness 8-10mm;
3) for the first time spray 20-25 minute after, after first floor solidified, beginning is spraying for the second time: the distance of nozzle and roofing was controlled between 600～650mm, and the air pressure of air remains on 0.6～0.7Mpa, and coating thickness 14-16mm is not interrupted in maintenance;
4) for the second time spray 20-25 minute after, after the second layer solidified, beginning is spraying for the third time: the distance of nozzle and roofing was controlled between 600～650mm, and the air pressure of air remains on 0.6～0.7Mpa, and coating thickness 14-16mm is not interrupted in maintenance;
5) after spraying finishes for the third time, stop Material valve earlier, wait to remain in and stop compressed air valve again after ducted material blows off, and to the foamed polyurethane insulation water-proof layer slaking of spraying 48-72 hour.
2. spray coating foaming polyurethanes insulation water-proof layer job practices according to claim 1, it is characterized in that: the environment temperature of spraying is 10-35 ℃, and relative humidity is less than 80%.
3. spray coating foaming polyurethanes insulation water-proof layer job practices according to claim 1 is characterized in that: the foamed polyurethane insulation water-proof layer surface finish deviation after the spraying is less than 5mm.
4. spray coating foaming polyurethanes insulation water-proof layer job practices according to claim 1, it is characterized in that: the density of the foamed polyurethane insulation water-proof layer after the spraying is 55-60Kg/m
3
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101810007A CN102691405A (en) | 2012-06-04 | 2012-06-04 | Construction method for spraying foaming polyurethane heat-preservation and water-proof layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101810007A CN102691405A (en) | 2012-06-04 | 2012-06-04 | Construction method for spraying foaming polyurethane heat-preservation and water-proof layer |
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| CN102691405A true CN102691405A (en) | 2012-09-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63201231A (en) * | 1987-02-17 | 1988-08-19 | 東邦パ−ライト株式会社 | Heat insulating material and execution thereof |
| CN1080682A (en) * | 1992-06-30 | 1994-01-12 | 烟台合成革总厂 | Direct spray ployurethane foam thermo-insulating water-proof roof |
| CN1383929A (en) * | 2002-06-14 | 2002-12-11 | 大庆油田有限责任公司 | Polyurethane foam spraying method |
| JP3140014U (en) * | 2006-11-30 | 2008-03-13 | 株式会社トヨコー | Construction structure of roof, wall, steel structure, floor, foundation, ground, ground. |
| CN102154608A (en) * | 2010-02-11 | 2011-08-17 | 上海建冶科技工程股份有限公司 | Steel structure anti-corrosion process |
-
2012
- 2012-06-04 CN CN2012101810007A patent/CN102691405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63201231A (en) * | 1987-02-17 | 1988-08-19 | 東邦パ−ライト株式会社 | Heat insulating material and execution thereof |
| CN1080682A (en) * | 1992-06-30 | 1994-01-12 | 烟台合成革总厂 | Direct spray ployurethane foam thermo-insulating water-proof roof |
| CN1383929A (en) * | 2002-06-14 | 2002-12-11 | 大庆油田有限责任公司 | Polyurethane foam spraying method |
| JP3140014U (en) * | 2006-11-30 | 2008-03-13 | 株式会社トヨコー | Construction structure of roof, wall, steel structure, floor, foundation, ground, ground. |
| CN102154608A (en) * | 2010-02-11 | 2011-08-17 | 上海建冶科技工程股份有限公司 | Steel structure anti-corrosion process |
Non-Patent Citations (2)
| Title |
|---|
| 山东省建设厅: "《硬泡聚氨酯保温防水工程技术规范，GB50404-2007》", 1 September 2007, article "硬泡聚氨酯保温防水工程技术规范" * |
| 徐晓: "聚氨酯喷涂的施工工艺与改进", 《建筑施工》, vol. 33, no. 8, 25 August 2011 (2011-08-25) * |
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Application publication date: 20120926 |