NEWTECOAT PUA-500

  • NEWTECOAT PUA-500 is a super durable, highly elastic polyurea.
  • NEWTECOAT PUA-500 creates a flexible coating used for waterproofing, anti-abrasion, marine corrosion, wastewater corrosion, and chemical corrosion resistance.
  • Suitable for use on most surfaces. Rapid application and instant curing properties allow for shorter application times than traditional coating products.

1. Advantages

  • Long life, saving investment costs;
  • Very fast curing/setting time of only about 30 seconds;
  • Low service and production interruption time saves time and money;
  • Completely seamless with no joints;
  • Excellent adhesion to most types of surfaces – concrete, steel, aluminum, wood, composites, etc.
  • Good chemical resistance;
  • Very high heat and humidity resistance;
  • Good abrasion and impact resistance;
  • Absolute waterproofing;
  • Odorless;
  • 100% solids, free of volatile organic compounds (VOCs);
  • Safe for humans;
  • No reinforcement is required in the transition zone;
  • It can be used without primer in some applications (especially steel)

2. Applications Areas

  • Large-scale protection for foundations and floors of buildings, industries, and production areas;
  • Protection of foundations and floors in high-impact areas such as car parks, etc.;
  • Protection of foundations and floors for structures subject to abrasion and light chemical corrosion;
  • Bridges and roads, traffic parking lots, road tunnels;
  • Protection of structural steel and steel pipes

3. Packaging

  • • Standard paking: 400 L/ Set. Include component A – 220 kgs/ Drum and component B – 210 kgs/Drum.
  • Other sizes can be supplied upon request.

4. Application Properties

Mixing ratio component A to component B 1: 1 (by volume)
Material consumption [kg/m²/mm.] 1.2 Kg/m² at 1 mm thickness – 1.8 Kg/m² at 1.5 mm thickness
Recommended thickness [mm.] 1.2 – 2.0 (waterproofing, corrosion resistance)
≥ 2 mm (abrasion resistance)
Gel time at 24°C [seconds.] ≤ 20
Tack-free time at 24°C [seconds.] 30 – 60 (depends on environmental temperature and substrate)
Maximum recoat time [hours.] 12
Hardening and load bearing after [hours.] Foot traffic: 1; Factory: 2-4; Chemicals: 12-24
Temperature range for application (environment) [°C.] 0 – +45
Temperature range for application (substrate) [°C.] 0 – +45
Material temperature (pre-conditioning) [°C.] 25 – 30
Material temperature (spraying) [°C.] 65 – 75
Maximum relative air humidity for application [%.] 80 – 85
Observe the dew point limit Minimum 3K > DP (dew point)

5. Colors

  • Base colors: Grey/blue/black/white…
  • The manufacturer can supply the product in custom or custom colors (mixed to match any RAL number), but this may take additional time and cost.
  • Please contact your local distributor for information on available product colors.

6. Preserving

  • Part A should be tightly closed and stored indoors, in a well-ventilated area, under optimum temperature conditions (20-25°C).
  • Storage at low temperatures (below 10°C) is not recommended as this may lead to crystallization: The material must be protected from frost.
  • Under no circumstances should it be heated above 80°C.
  • Storage at temperatures above 50°C is not recommended as this may promote the formation of insoluble solids and also increase viscosity over extended storage periods.
  • Under recommended storage conditions and in properly closed containers, the components have a specified storage time of 12 months. If a component is opened and partially used, it should be stored in nitrogen or air-dried and resealed or filled into a smaller container.

7. Technical Specifications

Chemical composition base   Component A: Isocyanate
Component B: Polyamine
Volatile Organic Compounds (VOC) [%]: DIN EN ISO 11890-1 / ASTM D-1259 0
Solid Content [%]: DIN EN 827 / ASTM D-2697 100
Taber abrasion resistance / CS17 wheel/ 1000mg load/ 1000 cycles [mg.] ISO 5470-1 / ASTM D-4060 ≤ 100
Density [g/cm³] @ 25°C: DIN EN ISO 2811-2 / ASTM D-1217 Component A: 1.08 – 1.12
Component B: 1.00 – 1.10
Tensile Strength [MPa]:
ISO 527-2
≥ 18
Elongation at Break [%]: ≥ 200
Hardness [Shore D]: ASTM D2240 ≥ 45
Tear Strength [kN/m]: ASTM 624 / TCVN 1597-1:2006 ≥ 75
Adhesion Strength on M30 Concrete [MPa]: ASTM D7234 ≥ 2.0
Adhesion Strength on Steel [MPa]: ASTM D4541 > 3.0
Impact Resistance: ASTM D4508 No cracks or peeling
Effect of Contact Materials on Drinking Water AS/NZS 4020:2018:   Safe for contact
Heat Resistance [°C]:   -45 to 135
Water permeability under hydrostatic pressure
at 150 kPa for 7 days
BS EN 14891:2017 Impermeable
Crack bridging ability under normal conditions with 2mm thick
NEWTECOAT PUA-500 layer [mm.]
BS EN 14891:2017 ≥ 0,5
 

8. Chemical Resistance

Each formulation of specialty Polyurethane products has varying degrees of resistance to specific chemicals. NEWTECOAT PUA-500 materials are resistant to a wide range of chemicals. The following information and technical data are representative or typical only and are not intended for specification purposes. Please contact your NewTec technical representative and distributor for specific advice on chemical resistance before applying these products.

Ammonium hydroxide (20%) R
Ammonium hydroxide (50%) R
Diesel Fuel (Kerr-McGee) RC
Saturated alkali R
Potassium hydroxide (20%) R
Sulfuric acid (15%) R
Seawater R
Wastewater R
Water (machine) @ 80°C R
  • R – durable, resistant
  • RC – Slight surface change, fading but no effect on hardness

9. Material Application

  • Surface Preparation
– The surface of the base material such as concrete, steel, wood… must be treated to ensure specific requirements before construction. The surface must be free of dust and ensure the humidity is below 8%.
– In other cases, please consult NewTec technical representatives and distributors for specific recommendations for use.
  • Primer
– Polyurethane or epoxy primers can be used as primers before applying NewTec. In other cases, please consult NewTec technical representatives and distributors for specific recommendations for use.
  • Number of coats
– This product can be applied in thicknesses from 1 mm to several centimeters in a monolithic coating. To proceed according to the technical requirements, allow sufficient curing time for the first coat to form a film, then apply the next coat. Do not exceed the recommended recoating time. When working to a thickness of over 3mm, pause at least 5 minutes every (approximately) 3mm to allow the coating to heat up and dry evenly in each layer.
  • Topcoat
– The polyurethane topcoat – NEWTECOAT PUA-500 is very resistant to UV rays, but the color will change over time. Therefore, it is necessary to apply a durable acrylic polyurethane hybrid TOPCOAT with a minimum coverage of 40 microns on top of the polyurethane to maintain the color.
– The topcoat must be applied immediately after the last polyurethane coat has cured for a certain period. The optimal time for TOPCOAT application is 4 hours after the last polyurethane coat is sprayed.

10. Construction Instructions

  • Introduction

– A specialized polyurethane-based paint designed for applications through a high-pressure, multi-component, heated reactor spray equipment capable of delivering separate components A and B at the spray gun at a minimum spray pressure of 2000 psi and a material temperature of 60-80°C (depending on the geographical location). The Graco multi-component reactor – USA is the first choice and a mechanical blow-off gun (air blow-off gun recommended) is often used.
– If there is any change in color or consistency of the material, the spray equipment must be shut down immediately and the problem must be corrected.
– Filters must be checked periodically to determine material blockage.

  • Application Temperature

– The minimum recommended material and substrate temperature is 10°C. The maximum recommended substrate temperature is 50°C.
– The temperature range may be wider but please consult your technical representative for specific advice.

  • Setting time and repainting time

– Intact paint layers or paint layers that have dried after 24 hours should be lightly sanded to remove the top oxidation layer and cleaned completely before applying the next coat. Please consult your NewTec technical representative for more detailed advice on handling the old and new paint joints.

NewTec Polyuria based coating (PUA)

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NEWTEC PUA-300

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NEWTEC PUA-500

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NEWTEC PUA-500HS

NEWTEC PUA-BRUSH

NEWTEC PUA-S

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