NOTE: Since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required training.
Companies can register for an online training via THIS link.
You can also read more information here .
This flexible polyurethane foam is perfect for seat cushions, props, and more. It can be processed by hand (or machine) and poured into unheated cavities or molds.
This is a polyurethane foam casting system consisting of an A and B component. The result is a compressible foam.
- Brownish
- Can be processed by hand
- To be used in unheated molds
- Good fluidity
- Suitable as:
- end product in industrial applications
- filling of flexible objects
Technical data
- Mixing ratio by weight: A:B = 100:34
- Mixing time at 20°C*: 20 seconds
- Starting time at 20°C*: 45 seconds
- Cured density: 280 kg/m³ (0.05 gram/cm³)
- Volume increase: 3.8 X
- Liquidity: 1,000 mPa s
*For 100 grams. Larger quantities and higher temperatures result in a much shorter processing time. Don't process too much material at once!
Processing
Stir/shake both components in their original packaging thoroughly before use to distribute the fillers evenly. Only use the PU at room temperature (20 to 25°C). Work in a dry place at room temperature. Do not use wooden spatulas. Use the product at room temperature around 20°C.
Pour components A and B together and mix thoroughly. Mixing is best achieved with a drill at 1000 RPM. Pour the mixed product into the mold at a steady stream, taking care not to entrap any air. Excessive heat buildup in large castings can be prevented by pouring multiple successive layers (allowing each layer to set before pouring the next). Wait until the indicated time has elapsed before demoulding. The thermal and mechanical properties will develop rapidly. Final specifications will only be achieved after 7 days.
Important
The moisture absorbers in these products can settle, requiring remixing before use. This can be achieved by shaking the packaging vigorously before use.
The less filler you add, the greater the heat generated by the casting and the less thickly you can pour it in one go. Use a mixing bucket with a large surface area to maximize processing time.
The mixing ratio is very important. If there's a deviation of more than 3%, you won't be able to meet the specified specifications. Therefore, especially for small quantities, use a very precise scale (gram scale accurate to 2 decimal places).
Shelf life
The polyurethane casting system should be stored in a dry place between 6–28°C. The expiration date, which assumes storage within the specified conditions, is indicated on the packaging. Opened packages should be used as soon as possible to ensure product quality. The normal shelf life is 6 months.
Safety regulations
Altropol flexible polyurethane foam SF 280 - B - Component: N
H-code hazard statements
EUH204 Contains isocyanates. May produce an allergic reaction.
H332 Harmful if inhaled.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H317 May cause an allergic skin reaction.
H351 Suspected of causing cancer.
H335 May cause respiratory irritation.
H373 May cause damage to organs through prolonged or repeated exposure.
P-Code Precautions
Prevention:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection.
Face protection/hearing protection.
P284 [If ventilation is inadequate] Wear respiratory protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes.
minutes; Remove contact lenses if possible; Continue rinsing.
P405 Keep store closed.
P501 Dispose of contents and container in accordance with local/regional/national regulations.
international regulations.
Special provisions:
EUH205: Contains isocyanates. May cause allergic reactions.
Storage
Product stored in a well-closed container between 15 and 25 o C has a shelf life of at least six months.
Product information
EN - Product information Sheet AltroFoamFlex SF 280.pdf
Please contact us for the safety data sheets.
