BEWI NF-314p
- Chemical Family
- Styrenics
Bewi NF-314P is a flame retardant (FR) expandable polystyrene grade containing pentane as a blowing agent and a brominated polymeric flame retardant as an FR additive. The product is delivered in the form of spherical beads with a bulk density of about 0.6 g/cm3 and is available in 1100 kg octabins.
Properties
- Physical Form
- Beads
- Solid
Product families
Applications
- EIFS & Insulation
Product Families
- Styrenics
Other characteristics
- Polymer Name
- Expanded Polystyrene (EPS)
- Additives Included
- Blowing Agent, Flame Retardant
- Blowing Agent
- Flame Retardant
- Processing Methods
- Injection Molding
- Safety
In transport NF-314p is classified according to European regulations for product transport: Substance number UN2211, Class 9.. In processing avoid generating dust. All equipment should be properly earthen. Releases pentane during processing which might form a flammable/explosive vapor-air mixture. Use proper ventilation and keep away from any source of ignition.
- Markets
- Building & Construction
- Technology
- Plastics
- Packaging Type
- Totes (IBC)
- Material Features
- Flame Retardant
- Handling
NF-414e should be stored at below 20 °C. Protect from direct sunlight and other weather conditions (rain, wind, frost etc.). Keep away from any source of ignition. The storage time should not exceed three months. After opening of the packaging, it should be used as soon as possible.
- Usage
- Application:
- The properties of NF-314p make it suitable for the production of flame retardant light insulation board by block or shape molding in accordance with ISO EN 11925-2 class E.
- Processing
- The processing conditions of NF-314p depend on the combination of the product and processing equipment used. Optimal settings have to be adjusted for each combination.
- Some general processing conditions are given below:
- Prefoaming
- The steam has to be saturated at a temperature of 100–110 °C. To reach densities below 15 kg/m3 , batch prefoaming is recommended and with a continuous prefoamer to prefoam twice and to reach higher densities (>25 kg/m3 ) to mix the steam with air.
- Conditioning
- Depends on the density. The higher the density the longer the conditioning time. Generally 12–24 hours is recommended. When prefoaming in two steps, a conditioning time of 4–6 hours between the first and the second step is optimal but can be a bit longer.
- Molding
- The machine should be fed with saturated steam with a max pressure of about 2 bar. The steaming time depends on the equipment used as well as the size and required strength of the final product. Therefore, all machines have to be adjusted individually. Equipment using vacuum is recommended to reduce cycle times and to increase product strength.
- Cutting
- Hot wire cutting (oscillating or stationary wires) is recommended. Temperature of the wires should be about 200–300 °C.
- Plastics and Elastomers End Uses
- Foamed Insulation Board
- Plastics and Elastomers Functions
- Resin
- Plastics and Elastomers Processing Methods
- Injection Molding
Technical data
Table 1 of 1
15 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Pentane Content | 5.5 - 6.5 | % | Gas chromatography |
| Monomer Level | max. 0.1 | % | Gas chromatography |
| Main Bead Size Distribution | 1.2 - 2.5 | mm | Image analyser |
| Compressive Stress at 10% (10 kg/m3) | 40 | kPa | — |
| Bending Strength (10 kg/m3) | 100 | — | — |
| Heat Conductivity (λ10) (10 kg/m3) | 0.042 | W/mK | — |
| Compressive Stress at 10% (15 kg/m3) | 80 | kPa | — |
| Bending Strength (15 kg/m3) | 170 | — | — |
| Heat Conductivity (λ10) (15 kg/m3) | 0.038 | W/mK | — |
| Compressive Stress at 10% (20 kg/m3) | 120 | kPa | — |
| Bending Strength (20 kg/m3) | 240 | — | — |
| Heat Conductivity (λ10) (20 kg/m3) | 0.035 | W/mK | — |
