Halogen free
Halogen free flame retardant (HFFR), low smoke zero halogen (LSOH), low smoke and fume (LSF) are all names associated with compounds that are finding increased use in the European, Asian and Middle Eastern markets.
These compounds are generally based on polyethylene or co-polymers of polyethylene with the addition of mineral fillers to impart flame retardant properties. They are finding increasing use as replacements for PVC and other halogenated polymers for applications where lower smoke and acid gas evolution are required during a fire situation. These can be in underground and overground railways, public buildings and airports.
HFFR compounds can be either thermoplastic or crosslinked, the latter are used where higher temperature ratings are required such as the insulation of cable conductors.
Our standard thermoplastic grade is TP521, which is used extensively in many cable designs throughout the world. This product has excellent overall performance and exceptional crack resistance and complies with the requirements of VDE Spec 0207 Part 24 for type HM2 and HM4 also BS7655 section 6.1 type LTS1-4.
For high speed extrusion TP519C is used and is ideal for sheathing applications such as for data and communication cable. This grade can, in certain circumstances, also successfully be used on standard PVC extruders.
CT08-93 has high char forming characteristics and is starting to be used for cables to meet the B2 rating in EN 50399 fire test specified in the EU Construction Products Directive. It will also potentially have application for cables that need to pass the CSA FT-4 or UL1581 tests used in North America.
CT06-30 is our most popular silane crosslinkable grade and has widespread use as a building wire insulation. With its higher fire performance it is the preferred choice for the more difficult fire tests such as UL VW-1.
Our most recent developments include HFFR compounds with increased flexibility and with superior oil resistance - please view the separate sections for more information.
Grades available
|
Density |
Tensile |
Elongation |
Limiting oxygen |
Temperature |
Data |
| TP519C Thermoplastic high output, easy process HFFR sheathing | |||||
|
1.50 |
13 |
140 |
31 |
270 |
|
| TP521 Thermoplastic general purpose, highly crack resistant HFFR sheathing | |||||
|
1.50 |
13 |
160 |
30 |
270 |
|
| TP543C High performance HFFR sheathing | |||||
|
1.57 |
11 |
160 |
45 |
>300 |
|
|
CT08-93 High char high fire performance HFFR sheathing |
|||||
|
1.50 |
12.5 |
160 |
32 |
>300 |
|
| TP564 Thermoplastic high performance HFFR sheathing | |||||
|
1.35 |
17 |
225 |
37 |
>300 |
|
| CT09-12 Flexible thermoplastic general purpose HFFR sheathing | |||||
|
1.46 |
12 |
270 |
32 |
270 |
|
|
CT09-07 Easy-strip flexible thermoplastic general purpose HFFR sheathing |
|||||
|
1.52 |
12 |
150 |
33 |
280 |
|
|
CT09-03:CT06-81A Oil resistant flexible silane crosslinkable HFFR sheathing |
|||||
|
1.48 |
10 |
170 |
29 |
- |
|
| CT06-30:CT06-81A General purpose silane crosslinkable HFFR insulation and sheathing | |||||
|
1.47 |
13 |
180 |
29 |
245 |
|
| CT09-13:CM424 Very flexible silane crosslinkable HFFR sheathing | |||||
|
1.42 |
8.5 |
270 |
30 |
270 |
|
|
CT09-05:CM401/2S Flexible silane crosslinkable HFFR sheathing for photovoltaic systems |
|||||
|
1.47 |
13 |
180 |
29 |
- |
|
| SX407:CM424 General purpose silane crosslinkable HFFR sheathing wiith LOCA approval | |||||
|
1.37 |
10 |
150 |
29 |
280 |
|
| SX545:CM540U General purpose silane crosslinkable HFFR sheathing | |||||
|
1.49 |
12 |
140 |
32 |
260 |
|
|
SX538:CM540U High fire performance silane crosslinkable HFFR sheathing |
|||||
|
1.51 |
14 |
150 |
36 |
>300 |
|
| SX549:CM401 125oC rated silane crosslinkable HFFR insulation for auto wiring | |||||
|
1.36 |
25 |
300 |
25 |
- |
|
|
SX559:CM540U High fire performance silane crosslinkable HFFR sheathing |
|||||
|
1.49 |
14 |
165 |
36 |
>300 |
|
| SX738:CM424 Silane crosslinkable HFFR for fleixble heatshrink tubing | |||||
|
1.4 |
10 |
200 |
26 |
>200 |
|
Please note that all of the silane crosslinkable grades are shown as a system with a graft and a catalyst. These are normally used in the ratio of 95:5. The most common catalyst masterbatch is shown in the table but there are others available which helps us to more accurately match your property requirements and processing conditions.
Thermoplastic grades are available in natural, black and with additional UV stabilization.
