 |
Forane® 134a
|
Compatibility (15K PDF)
Spray Application
Although Forane® 134a is gaseous at atmospheric conditions, it can be used effectively as a blowing agent for spray-applied polyurethane foam. Forane® 134a has a low thermal conductivity and can be incorporated into b-side blends to produce foams with good physical properties. See the referenced property table below.
|
Property HCFC-134a Spray
|
Pressurized Container
|
Standard Drums
|
|
R-Value (Initial)
|
6.3
|
5.9
|
|
Thermal Conductivity @75ºF (Btu-in/ft2 hr ºF )
|
0.159
|
0.169
|
|
Thermal Conductivity @50ºF (Btu-in/ft2 hr ºF)
|
0.146
|
0.156
|
|
Parallel Compressive Strength (psi)
|
54
|
58
|
|
Perpendicular Compressive Strength (psi)
|
26
|
28
|
|
% Volume Change 28 days @
|
Pressurized Container
|
Standard Drums
|
| -20ºF |
0.13
|
0.12
|
| 158ºF |
1.1
|
0.95
|
| 158ºF & 100% Relative Humidity |
2.5
|
3.3
|
Forane® 134a Blown Foam Formulation Characteristics
|
Properties
|
Pressurized Container
|
Standard Drums
|
| % Blowing agent on Total Foam |
9.6
|
3
|
| % CO2 blowing of blowing mixture |
32
|
80
|
| % Physical blowing agent blowing of blowing mixture |
68
|
20
|
| Free rise density (pcf) |
2.5
|
2.5
|
| Vapor pressure (psia) |
40
|
5
|
Appliance Application
Forane® 134a has good low temperature vapor thermal conductivity. Therefore, polyurethane foam blown with Forane® 134a has good insulation value at low temperature. This is ideal for refrigerator and freezer applications.
|
Properties
|
HCFC -134a Appliance
|
| In-place Density (pcf) |
2.0 - 2.1
|
| Thermal Conductivity @75°F (Btu-in/ft2 hr °F ) |
0.145
|
| Thermal Conductivity @50°F (Btu-in/ft2 hr °F) |
0.130
|
| Flow Min. Fill Weight (gm) |
299
|
|
Parallel Compressive Strength (psi)
|
24
|
| Perpendicular Compressive Strength (psi) |
21
|
| Freeze Stable Density (lbs/ft3) |
1.8
|
| Dimensional Stability @ -13ºF % volume change during 14 dayS |
-0.55
|
| Dimensional Stability @ 158ºF & 97%RH % volume change during 14 days |
2.5
|
| Dimensional Stability @ 199ºF % volume change during 14 days |
4.1
|
Forane® 134a Foam Formulation Characteristics
|
Properties
|
HCFC -134a Appliance
|
| % Blowing agent on Total Foam |
9.3
|
| % CO2 blowing of blowing mixture |
65
|
| % Physical blowing agent blowing of blowing mixture |
35
|
| Free rise density (pcf) |
1.5
|
| Vapor pressure (psia) |
43
|
Panel Application
Forane® 134a has good low temperature vapor thermal conductivity that allows polyurethane foam blown with Forane® 134a to have good insulation value at low temperature. The low boiling point of the material allows the blowing agent to remain in the vapor phase in cold temperature applications such as walk-in freezers. Due to the blowing agent remaining a vapor at low temperatures, it allows for improved insulation and stability.
|
Properties
|
HCFC -134a Panel
|
| In-place Density (pcf) |
2.67
|
| Thermal Conductivity @75°F (Btu-in/ft2 hr °F ) |
0.166
|
| Thermal Conductivity @50°F (Btu-in/ft2 hr °F) |
0.153
|
| Flow Min. Fill Weight (gm) |
|
| Parallel Compressive Strength (psi) |
29
|
| Perpendicular Compressive Strength (psi) |
17
|
| Freeze Stable Density (lbs/ft3) |
|
| Dimensional Stability @ -13ºF % volume change during 14 days |
0.15
|
| Dimensional Stability @ 158ºF &97%RH % volume change during 14 days |
2.2
|
| Dimensional Stability @ 199ºF % volume change during 14 days |
4.5
|
Forane® 134a Foam Formulation Characteristics
|
Properties
|
HCFC -134a Panel
|
| % Blowing agent on Total Foam |
2.2
|
| % CO2 blowing of blowing mixture |
80
|
| % Physical blowing agent blowing of blowing mixture |
20
|
| Free rise density (pcf) |
2.3
|
| Vapor pressure (psia) |
4
|
