TC7FTN
FR2 Series | THERMOLAST® K
Applications with higher flame retardant requirements; halogen-free; UL 94 V-0 (1.5 mm); adhesion to PP
Processing Method:
Injection Molding, Extrusion
Injection Molding, Extrusion
Color / RAL DESIGN:
natural
natural
Availability:
Globally
Globally
Manufacturing Site :
Germany, United States
Germany, United States
Typical applications
- Gaskets for electric and electronic applications e.g. cable boxes
- Cable management systems e.g. cable holders, cable glands and grommets
- Electrical insulation for busbars
- Applications in railway sector
Material advantages
- Halogen-free (according to IEC 61249-2-21)
- Fulfills railway requirements such as high LOI, low toxicity and smoke density
- Self-extinguishing, no release of burning droplets
- Adhesion to PP
- In-process recycling possible
- Precoloration in all colors
- Temperature stability up to 85 °C
- High glow-wire flammability index (GWFI)
- No silicones added
- Stability in conditions up to 60 °C and 75% humidity
Regulations / Approvals
- UL 94 V-0 (1.5 mm)
- DIN EN 45545-2 R26
- IEC 60695-2-12:2021-10 (GWFI) 960 °C / 2 mm
| Value | Unit | Standard | |
|---|---|---|---|
| Hardness | 68 | Shore A | DIN ISO 48-4 |
| Density | 1.090 | g/cm3 | DIN EN ISO 1183-1 |
| Tensile Strength1 | 5.0 | MPa | DIN 53504/ISO 37 |
| Elongation at Break1 | 650 | % | DIN 53504/ISO 37 |
| Tear Resistance | 17.0 | N/mm | ISO 34-1 Method B (b) (Graves) |
| CS 72 h/23 °C | 18 | % | DIN ISO 815-1 Method A |
| CS 24 h/70 °C | 70 | % | DIN ISO 815-1 Method A |
1Deviating from ISO 37 standard test piece S2 is tested with a traverse speed of 200 mm/min.
| All values published in this data sheet are rounded average values. |
| The shelf life of the TPE granules is 24 months from delivery if storage instructions are observed and the product is stored in the unopened original KRAIBURG TPE packaging. Store in dry conditions at room temperature (below 40 °C) away from heat sources and direct sunlight! Contact with nitrogen oxides must be avoided during storage! |
| For further information and individual custom solutions please contact our customer service. |
| Processing Guideline Injection Molding | |
|---|---|
| Cylinder Temperature | 170 - 190 - 210 °C, max. 220 °C (340 - 370 - 410 °F, max. 430 °F) |
| Hotrunner | Hot runner temperatures: 180 - 220 °C (356 - 428 °F). The runner should be empty after a maximum of 2 - 3 shots. |
| Injection Pressure | 200 - 1000 bar (2900 - 14504 psi) (depending on the size and weight of the part). |
| Injection Rate | In general, the fill time should not be more than 1–2 seconds. |
| Hold Pressure | We recommend to derive the optimum hold pressure from determining the solidification point, starting with 40 % - 60 % of the required injection pressure. |
| Back Pressure | 20 - 100 bar; if color batches are used, higher back pressure is necessary. |
| Screw Retraction | If an open nozzle is used processing with screw retraction is advisable. |
| Mold Temperature | 25 - 40 °C (77 - 104 °F) |
| Predrying | The material is hygroscopic, residual moisture content might lead to processing problems and a reduction in the quality of the finished part. Drying conditions: 80 °C for 4-6 hrs. The maximum residual moisture of the material should not exceed 0,05%. |
| Needle Valve | With materials < 50 Shore A the use of a needle valve is advisable. |
| Screw Geometry | Standard 3-zone polyolefine screw. |
| Residence Time | The residence time is to be set as short as possible with a maximum of 10 minutes. |
| Cleaning Recommendation | For cleaning and purging of the machine it is appropriate to use polypropylene or polyethylene. Machine must be PVC-free. |
| Other Information | In the processing of flame-retardant TPE, an interaction with some steels may occur. Please consult your tool and processing equipment manufacturer to select the appropriate steels. |
| Other Information | Provide sufficient ventilation and punctiform suction at critical points. |
| Processing Guideline Extrusion | |
|---|---|
| Cylinder Temperature | 150 - 170 - 190 °C; max. 210 °C (300 - 340 - 375 °F; max. 410 °F) |
| Screw Geometry | Standard three-zone screw (e.g. polyolefin screw). The screw must be able to provide sufficient shearing. |
| L/D Ratio | At least 25 |
| Compression Ratio | At least 2,7 ... 3,5 : 1 |
| Screens / Breaker Plate | A breaker plate and a screen pack are recommended in the extruder configuration in order to increase pressure. In minimum two screen packs of 100 mesh are recommended. |
| Die Land | <= 3 mm ( <= 0,12 in.) |
| Extruder Head | Ca. 200 °C (390 °F) |
| Die Temperature | Ca. 180 - 190 °C (374 - 410 °F) |
| Predrying | Drying of the material for at least 6 hours at 80°C (175°F) is recommended. The moisture level of material has to be below 0.05 %. To avoid porosity in the profile a pre drying is recommended for wall thickness > 3mm. |
| Calibration | Generally not necessary; support elements may be required when extruding THERMOLAST® compounds with high hardness or when coextruding with standard thermoplastics. |
| Cleaning Recommendation | For cleaning and purging of the machine it is appropriate to use polypropylene or polyethylene. Machine must be PVC-free. |
| Other Information | In the processing of flame-retardant TPE, an interaction with some steels may occur. Please consult your tool and processing equipment manufacturer to select the appropriate steels. |
| Other Information | Provide sufficient ventilation and punctiform suction at critical points. |