Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Cutting
For hot wire cutting of the blocks the use of oscillating wires is recommended. All other settings can be the same as for white material. Prior to this operation the block should be stored for a sufficiently long period, to ensure that it is essentially free from pentane.
Properties
- Color
- Flame Rating
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Density Range | 18 - 30 | kg/m3 | — |
| Granulate Geometry | Bead-shaped granulate | — | — |
| Screen Limits | 1.0 - 2.4 | mm | — |
| Typical Granulate Diameter (min. 95% by weight) | 0.3 - 0.8 | mm | — |
| Pentane Content (at the time of packaging) | min. 5.5 | % | — |
| Water Content (at the time of packaging) | max. 0.4 | % | — |
Regulatory & Compliance
- Certification
lambdapor® 750 contains polymeric flame retardant and is certified to DIN 4102/B1 and EN 13501-1 class E.
Technical Details & Test Data
- Processing
Pre-expansion
With discontinuously operating, state-of-the-art preexpanders lambdapor® 750 can be pre-expanded down to densities of approx. 16.5 kg/m³. To achieve lower densities, lambdapor® 750 should be preexpanded in two stages.
Approach for 2 stage expansion
- 1st pre-expansion: We recommend an initial pre-expansion of lambdapor® 750 to about 1.5 times the final required density after the second expansion stage. With batch pre-expanders it is possible that the light sensors do not recognize the material in the preexpansion chamber because of its color. This may lead to a failure of the automatic steam switch-off. To prevent this occurring the steaming time should be fixed or the sensor setting modified. The intermediate storage time before the second preexpansion should be between 2 and 6 hours
- 2nd pre-expansion: The second pre-expansion is usually carried out with continuously operating pre-expanders. The minimum bulk density that can be achieved is approx. 11 kg/m³.
Intermediate aging
Intermediate storage period should be between 6 and 24 hours.
Molding
lambdapor® 750 can be processed on commercially available block molding machines. Steaming should be reduced compared to other EPS types as the usual steaming would result in extended cycle times. lambdapor® 750 yields very well fused insulating boards, even with reduced steaming.
During the processing of lambdapor® 750 small amounts of dust can be created by abrasion of the beads. As the dust is mainly originating from the pre-expansion process appropriate measures have to be taken to extract the dust in the molders plant.
Safety & Health
- Safety Instructions
Flammable pentane-air mixtures may be generated during storage and processing of lambdapor® 750. For this reason, adequate ventilation must be ensured (LEL pentane 1.3 % by volume). The blowing agent pentane escapes relatively slowly from EPS foam blocks. Thus, when cutting recently molded blocks, the formation of a flammable pentane-air mixture has to be anticipated.
In addition, all conceivable sources of ignition must be kept away, and the build-up of electric charges has to be prevented.
Packaging & Availability
- Packaging
lambdapor® 750 is shipped in octabins (height max. 192 cm) on wooden pallets (114 x 114 cm) containing 1,150 kg net of material.
- Packaging of Boards
We recommend that lambdapor® 750 molded parts are packed in opaque plastic film, as their exposure to direct sunlight can result in fading and distortion.
- Shipping
UN-Number 2211 Designation Polymeric beads, expandable
Class 9 Packing Group III ADR
Storage & Handling
- Storage
The octabins are not weather- or waterproof and must therefore not be exposed to outdoor conditions. It is not recommended to stack octabins more than one layer high. In case of double-stacking octabins under controlled conditions, the recommendations laid out in the document „Instructions for stacking sunpor octabins“ must be followed. In order to obtain the desired properties of lambdapor® 750, the raw material should be stored below 20 °C and be processed within one month.