Marine Flotation FOam

Our full selection of marine flotation and boat foam exceeds industry standards for energy efficiency. Our flotation foam sprays all have a Global Warming Potential (GWP) that’s lower than 99.8% of existing blowing methods — making it the most innovative, recyclable, and eco-friendly spray foam on the market. 

✓ Good processing characteristics

✓ High in bio-renewable content

✓ Consistent density distribution for proper flotation

✓ Lower exothermic reaction for great lift thickness

Unsure what flotation products you need or the quantity your products will require? Let our experts run through our full line of marine flotation foams with you to help you determine the highest-quality (and most profitable!) solution for your marine flotation products. Get in touch with our team today!

 

Recommended Uses

  • General purpose pour applications
  • Molding
  • Floating devices
 

Natural-Therm® Flotation Foam Specs

Natural-Therm® 2250 series marine foams have exceptional physical properties. The chart below helps show the relationship between applied pass thickness, polyurethane foam-in-place density, and compressive strength. Accordingly, all other physical properties will be affected by the in-place density of the polyurethane foam.

Table 183.114 – Flotation Performance Tests
TEST 183.144 (B) ENGINE ROOM BILGE (C) ENGINE ROOM UNLESS OPEN TO ATMOSPHERE (D) BILGE
(a) Vapor Test - X -
(b) 24 Hrs Gasoline Test - - X
(c) 30 Day Gasoline Test X - -
(d) 24 Hour Oil Test - - X
(e) 30 Day Oil Test X - -
(f) 24 Hour Bilge Cleaner Test - - X
(f) 30 Day Bilge Cleaner Test X - -

Typical Component Properties

  • Viscosity @ 25°C, cps
  • Specific Gravity @ 25°C, g/ml
  • Mixing Ratio, % by volume

Typical Reactivity Properties

Spray Reactivity@120°F
  • Cream Time, seconds……….38-48
  • Tack Free Time, seconds……120-130
A Component polymeric MDI Natural-Therm 2050, B Component, polyol blend
200 300
1.24 1.16
50 50

Typical Processing Parameters

Hydraulic Pressure, psi 500
Spray Pressure, psi
Hose Temperature 120°F
Static, A/B 900-1200
Preheat Temperature
120°F Dynamic, A/B 700-1000

Typical Foam Properties

Compressive Strength, 10% deflection, ASTM D-1621, parallel, psi 28
Initial K-Factor*, ASTM C-518, BTU in/hr ft2 °F 0.140
Tensile Strength, ASTM D-1623, psi 28
Water Absorption, ASTM D-2842, lb/ft2 (% by volume) 0125-0.155
Tumbling Friability, ASTM C-421 % loss 1.0-3.5
Closed Cell Content, ASTM D-2856, % >97.5
Dimensional Stability, ASTMD-2126, % volume change:
  @ -20°F @ 158°F @ 100°F/100% R.H.
7 Days 0.4 0.9 1.6
14 Days 0.7 1.13 2.0
28 Days 1.00 1.70 2.70
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This chart demonstrates the typical relationship between applied pass thickness, polyurethane foam-in-place density, and compressive strength. Accordingly, all other physical properties will be affected by the in-place density of the polyurethane foam.
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Rate of Rise Data at 50°F
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Choice criteria 1 [s] 50.0% R 20.9
Choice criteria 2 [s] 80.0% R 25.5
start time [s] 15.0 % v 14.5
rise time [s] 98.0% R 36.2
max. velocity [mm/s]   15.6
max. velocity at   18.7
max. temperature [C]   122.3