POLYURETHANE FOAM
POLYURETHANE FOAM
POLYURETHANE FOAM
POLYURETHANE FOAM
RAKU-PUR 31-3131-1 BLACK
SOFT INTEGRAL FOAM, LIQUID
RAKU-PUR 31-3131-1 BLACK
SOFT INTEGRAL FOAM, LIQUID
Description
RAKU-PUR® 31-3131-1 Black is a liquid, two-component polyurethane system. It consists of a filled resin component A and a hardener component B (MDI). The system contains no solvents, plasticizers or halogenated hydrocarbons. It is characterized by:
- Well formed integral skin and reliable sealing
- Listed UL 50
- Very low water absorption
- Low assembly resistance
- Good and prompt compression recovery
- Smooth surface
- Balanced reactivity / flowing properties
Description
RAKU-PUR® 31-3131-1 Black is a liquid, two-component polyurethane system. It consists of a filled resin component A and a hardener component B (MDI). The system contains no solvents, plasticizers or halogenated hydrocarbons. It is characterized by:
- Well formed integral skin and reliable sealing
- Listed UL 50
- Very low water absorption
- Low assembly resistance
- Good and prompt compression recovery
- Smooth surface
- Balanced reactivity / flowing properties
Temperature resistance
Long-term -40°C to + 100°C
Short exposure up to + 160°C
Temperature resistance
Long-term -40°C to + 100°C
Short exposure up to + 160°C
Application
The product is used for the production of formed-in-place foam gaskets (FIPFG). Physical properties of the cured foam such as hardness and density may be adjusted by changing the mixing ratio.
Application
The product is used for the production of formed-in-place foam gaskets (FIPFG). Physical properties of the cured foam such as hardness and density may be adjusted by changing the mixing ratio.
Processing
Before use, the component A must be homogenized, as additives tend to cause phase separation.
The density of the material can be adjusted to the processing specification of 0.90 – 1.00 g/ml by adding dispersed air through stirring. The air helps to ensure a uniform foam structure.
The component B is very sensitive to moisture and must not be stirred. Due to its high reaction rate, the system is usually processed by two-component mixing and dispensing machines.
Processing
Before use, the component A must be homogenized, as additives tend to cause phase separation.
The density of the material can be adjusted to the processing specification of 0.90 – 1.00 g/ml by adding dispersed air through stirring. The air helps to ensure a uniform foam structure.
The component B is very sensitive to moisture and must not be stirred. Due to its high reaction rate, the system is usually processed by two-component mixing and dispensing machines.
Raw components data
Raw components data
Processing data
measured at 20 °C, 30 ml formulation, laboratory stirrer 1800 rpm.
Standard shipping containers
Storage
Original containers may be stored at ambient temperature (10 °C – 30 °C) for 6 months. At temperatures below + 5 °C the hardener component B may crystallize. Since both components are affected by air moisture, containers should be kept tightly sealed.
Health and safety at work
The workplace in which the material is being used must be well ventilated. All applicable health and safety regulations governing the use of reactive resins and their hardeners must be observed. Please also observe the respective safety data sheets.
RAKU-PUR® |
RAKU-PUR®31 |
||
---|---|---|---|
Viscosity, y=2.5 s-1 | mPa*s | 2,000 – 4,000 | — |
Viscosity | mPa*s | — | 500 – 700 |
Density without air | g/ml | 0.95 – 1.20 | 1.22 – 1.24 |
Density with recommended air loading | g/ml | 0.90 – 1.00 | — |
Color | — | black | light brown |
RAKU-PUR® |
RAKU-PUR®31 |
||
---|---|---|---|
Viscosity, y=2.5 s-1 | mPa*s | 2,000 – 4,000 | — |
Viscosity | mPa*s | — | 500 – 700 |
Density without air | g/ml | 0.95 – 1.20 | 1.22 – 1.24 |
Density with recommended air loading | g/ml | 0.90 – 1.00 | — |
Color | — | black | light brown |
RAKU-PUR® |
RAKU-PUR®31 |
||
---|---|---|---|
Viscosity, y=2.5 s-1 | mPa*s | 2,000 – 4,000 | — |
Viscosity | mPa*s | — | 500 – 700 |
Density without air | g/ml | 0.95 – 1.20 | 1.22 – 1.24 |
Density with recommended air loading | g/ml | 0.90 – 1.00 | — |
Color | — | black | light brown |
Processing data
Unit |
Value |
|
---|---|---|
Mixing ratio A : B | Parts by weight | 100 : 18.2 (5.5 : 1) |
Processing temperature | °C | at least 15 |
Cream time | sec. | 35 – 45 |
Tack free | minutes | 5 – 8 |
Density, foamed in 30 ml beaker | g/l | 260 – 290 |
Softness | Shore 00 | 40 – 50 |
Unit |
Value |
|
---|---|---|
Mixing ratio A : B | Parts by weight | 100 : 18.2 (5.5 : 1) |
Processing temperature | °C | at least 15 |
Cream time | sec. | 35 – 45 |
Tack free | minutes | 5 – 8 |
Density, foamed in 30 ml beaker | g/l | 260 – 290 |
Softness | Shore 00 | 40 – 50 |
measured at 20 °C, 30 ml formulation, laboratory stirrer 1800 rpm.
Standard shipping containers
Component A |
Component B |
|
---|---|---|
Contents | Contents | |
kg | kg | |
Container | 1000 | — |
Drum, removable lid | 200 | — |
Drum, screw cap | — | 225 |
Canister, internally coated | 25 | — |
Can | — | 30 |
Component A |
Component B |
|
---|---|---|
Contents | Contents | |
kg | kg | |
Container | 1000 | — |
Drum, removable lid | 200 | — |
Drum, screw cap | — | 225 |
Canister, internally coated | 25 | — |
Can | — | 30 |
Storage
Original containers may be stored at ambient temperature (10 °C – 30 °C) for 6 months. At temperatures below + 5 °C the hardener component B may crystallize. Since both components are affected by air moisture, containers should be kept tightly sealed.
Health and safety at work
The workplace in which the material is being used must be well ventilated. All applicable health and safety regulations governing the use of reactive resins and their hardeners must be observed. Please also observe the respective safety data sheets.