The NANO & SPRAY method is a rapid-hardening polyurea spraying method of enhanced flame-retardant performance. The excellent flame-retardant performance of the material and the outstanding mechanical performance of the special mixing device realize the precise mixture in which the material properties and quality are greatly improved by this state-of-the-art contact membrane method.
Certifications and Technologies Owned
Polyurea waterproof spray device for better flame-retardant performance
The polymer-modified cement manufacturing method & composite waterproofing method by means of polymer-modified cement
The composite insulation and waterproof structure by means of lightweight insulation mortar and its method
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- Patent Application (10-2015-0127051)
- The flame-retardant performance polyurea, its polyurea manufacturing method, and the waterproof method by means of polyurea
- Patent Application (10-2015-0048525)
- The room-temperature hardening ceramic coating material, its manufacturing method, and the coating method by means of the room-temperature hardening coating material
- Patent Application (10-2015-0109926)
- The anti-pinhole waterproof material, its manufacturing method, and waterproof method by means of the waterproof material
Method Principle
Polyurea waterproof spray device for better flame-retardant performance
- The grid-shape transferring and mixing device that maximizes the mixing performance
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The internal step-type structure of the grid-shape transfer unit goes through the 4-step reverse cycle structure and the 24-step forced cross mixing step in order to secure the mixing rate as high as 99%.
- Diagram of Mixing and Discharging Principles
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Materials transferred through the grid-shape mixing unit are discharged the air pressure from the air compressor that is connected to the outlet.
- Excellence of the Material (flame-retardant performance)
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Nano-size flame retardants are added to polyurea liquid A and B, which pass through the upper/lower and left/right routes inside the step-type static section for even mixing and better flame-retardant performance
- Excellence of the Material (rapid-hardening)
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The special polyurea resin used for the NANO L SPRAY method starts to be dried within 5 seconds from mixing and becomes completely hardened enough for walking on it within 30 seconds. Owing to this ultra-fast hardening property of the special material, this method is quite useful for areas of a high risk of liquid-applied membrane waterproofing defects or construction problems.
- Dedicated Equipment
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Model Name: DNS –ST 2000DNS –ST 1000 DNS –ST 2000 Supply voltage 220V single phase, 60hz 220V single phase, 60hz Capacity 100 (ℓ/h) 300 (ℓ/h) Material sus304 sus304 Pressure 300 ~ 700 psi 300 ~ 2000 psi Weight 45kg 150kg Viscosity 0 ~ 50,000 cps 0 ~ 50,000 cps
Major Features
- Outstanding flame-retardant performance
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Standards for ship interior parts
* The gas measurements in each condition shall not exceed the upper limits below
Gas Type CO HCl HBr HCN HF NOx SO2 Standard (ppm) 1450 600 600 140 600 350 120 Test Name Test Condition Test Result (ppm) Test Method CO HBr HCN HCL HF NOx SO2 Toxicity test 25kw/m2 without ignition flames 619.9 N.D 6.6 N.D N.D N.D N.D IMO.Res. MSC61 (67) FTP Code Part2 659:1994 Part 2 25kw/m2 with ignition flames 594.4 N.D 5.8 N.D N.D N.D N.D 50kw/m2 without ignition flames 919.5 N.D 14.9 N.D N.D N.D N.D Standards for finishing material flame-retardant performance and fire spreading prevention (Ministry of Land, Transportation, and Maritime Affairs, Notice No. 2012-624)
Test Item Related Criteria Test Result Performance Standard Heat Release Rate KSF ISO 5660-1:2008 Total Heat Release / 5 min. 7MJ/m2 8MJ/m2 or less Max. Heat Release / 5 min. 190kw/m2 200kw/m2 or less Gas Harmfulness KSF 2271:2006 Average Behavior Suspending Time of Rats 11 min. 9 min. or more
- Outstanding Crack Resistance
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Fatigue resistance test
Structure behavior response performance
Crack resistance performance
The high expansibility prevents simultaneous fracture of the waterproof layer upon cracks on the base.
- Outstanding Surface Durability
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Shock resistance
No hole was made at three places to which shock was
applied from a 1.5m high place -
Digging resistance
No hole was made at three places to which
250 N load was applied.
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- Flowing resistance
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A specimen thoroughly coated was fixed at 90° for 24 hours and examined to find wrinkles on it, and no flowing or wrinkle was observed at all.
- Excellent Constructability
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- The hydraulic cylinder method maximizes daily constructability.
(Max. construction capacity per hour: 150m2 / h) - Lightweight for more convenient construction; high pressure for high space efficiency
(weight (DNS-ST 2000): 150kg; max. vertical distance: 150M)
- The hydraulic cylinder method maximizes daily constructability.
- Characteristics and Advantages
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Eco-friendliness
- Eco-friendly solvent-free (100% solid) type applicable to soft base materials (ex: asphalt shingle, urethane foam, insulation, exposed sheet, etc.)
- No volatile organic compound (VOC) at all
Excellent chemical resistance
- The unique characteristics of the material include outstanding chemical resistance, which is quite useful for water/waste water treatment facilities
- Applicable to steel tube coating materials and chemical resistance coating facilities
Rapid-hardening
- It is possible to take the following step of construction only 30 minutes after the spraying work -> Excellent construction continuity.
- Owing to the ultra-fast hardening characteristic, there is no flowing on a vertical surface, and thus uniform thickness is secured in a construction work. Related defects also can be prevented.
Construction Procedures
Construction Examples
Various construction rooftops
Wall waterproofing on outside
Various construction outer wall finishing
Playground track
Public work structures
School balcony
School cafeteria floor
Rooftop trench
Water treatment facility
Asphalt shingle
