Low Density foams (TDI)

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This is a formulation for a low density foam with excellent mechanical properties.
Formulation Low Density Foam Carbon dioxide blown

Polyether Glycerol PO, EO  85 % primary OH, MW 3500, OH # 48, (CAS # 9082-00-2)

100
Stannous octoate, 50 % active (CAS #  301-10-0) 0.4
Water 4.6
Triethylenediamine (CAS # 280-57-9) 0.15
3-[2-(Dimethylamino)ethoxy]-N,N-dimethylpropylamine (CAS # 34745-96-5) 0.08
Surfactant DC-192 1.0
TDI  80 % (CAS # 26471-62-5) 55.4
Isocyanate Index 1.07
Processing temperature, F, (C) 82(28)

Test results of machine prepared foam (test methods) (Conversion factors)

Overall density kg/m ( lb/ft3),  (1 kg/m = 0.0624 lb/ft3 )

20.7(1.29)
Compression set 50% 6.0
Compression set 90% 6.4
ILD, lb/50 sq/in
       4", 25 % deflection 35
       4", 65 % deflection 59

Tensile strength kPa (PSI)  (1 kPa = 0.145 PSI)

122(17.7)

Elongation, %

259
Tear, pli 3.9
Ball rebound, % 38
Breathability, cfm, (1 cfm = 1.699011 m3/h) 3.5(5.9)
Silicone surfactant Dow Corning

Last edited on:

November 16, 2006

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