9. Specific Properties of Polyurethane


¡Ý excellent adiabatic effect : Lower thermal conductivity than other materials
¡Ý Easy to use at any circumstances.
¡Ý Easy processing and able to foam jointless in spray system at any circumstances.
¡Ý Excellent water and chemical resistance
¡Ý Self-extinguishing : Using in wide range of temperature (from -196¡É to +140¡É)
Thermal stability
¡Ý Easy to control specific gravity.
¡Ý Excellent self adhesiveness and mechanical property
¡Ý Mechanical Strength is strengthened in proportion to specific gravity,
(high elasticity)
¡Ý Light weight
¡Ý Excellent anti-noise, anti-dust, electric nonconductivity



Physical Properties Result Fed. Spec. HH-1-530(Base) Method
(ASTM)
No. 4 Test Method Type I Type II Type III
Density (PCF) 0.031
(g/m)
KSM-
3809-82
1.5-2.3 2.4-3.2 3.3-4.0 D 1622
Thermal conductivity "k" max.
(B.T.U. in/ft2 hr ¢µ. 75 ¢µ after)
30 days from date of manufacture
90 days from date of manufacture
0.016
(Kcal/mh ¡É)

"
"

0.14
0.17

0.14
1.17

0.14
0.17

C 177
C 518
Compressive Strength
lbs/in2(min.)
2.4(kg/cm) " 16 35 50 D 1621
Water Absorption by Volume
(max.)
0.8(g/100cm) " 4.0 4.0 4.0 D 2842
Perm-in (max.)   - 3.0 3.0 2.5 C 355
Burning Characteristics   " Self-Extinguishing D 1692
Flame Spread Index     25 or less E 84
Smoke Development     50 or less E 84


Property Urethane Styropor Glass Fiber Foam Glass Expanded
Perlite
Density(lbs/ft3) 2-10 1.5-2 9 9 10.5
Compressive Strength. psi
Parallel to Rise
Prependicular to Rise
16-150 10-35 3 100 185
Tensile Strength, psi 35-100 45-80 80 - -
Thermal conductivity, k 0.14 0.28 0.25 0.38 0.39
Water Absorption % by volume 3 0.2   0.2 1.5
Vapor Permeability perm-inches 1-3 0.9   0.1 25
Thermal Resistance, R/inch 7.14 3.57 4.00 2.63 2.78
Service Temp Range(¡É) -196
+140
-55
+77
-25
+300
-160
+400
 
Coefficient of Linear Expansion
(10in/in/¢µ)
3-8 - - 4.6 -
Thickness for equal insulation value 1" 1 3/4" 1 3/4" 2 1/2" 2 3/4"
Wt/Bd Ft 0.166lb   1.1lb 1.33lb 0.85lb
Dimensional Stability (Linear Change)
(72hrs, 158¢µ,100% RH)
L:+0.5-5%
W:+0.5-5%
       


Surface Adhesive Strength
(kg/cm)
Surface Adhesive Strength
(kg/cm)
Plywood 1.5 Stainless Steel 1.0
Steel Plate 2.0 Concrete 2.5
Galvanized Iron 2.0 FRP 1.5
Aluminium Plate 1.5