Sheathing
We have a grade of sheathing compound for most common applications where halogen free flame retardant (HFFR) materials are specified. When choosing a grade of sheathing compound the two most important criteria are the level of fire performance and the temperature rating of the compound, which is determined by the hot deformation test.
For most low voltage power cable applications TP521 is usually the first choice and meets the majority of the European standards, including BS7655 LTS1-4, HM2 and HM4 in VDE 0207 part 24, and other 90oC rated cables. It is especially resistant to cracking; a major problem for armoured cables used in hot climates, and is the first choice for cables used in the Middle and Far East.
There is an increasing demand for more flexible grades of HFFR compound that have the feel of the former PVC compounds which they have replaced. We have recently launched three new grades; the general purpose LM08/13D and an easy strip version CT08-111. For appliance flex we have CT08/85D, which can also be used as insulation.
For very high performance cables, such as required in fire alarm and emergency lighting cable, CT08/93 has recently been developed. Its high char forming characteristic affords superior protection to the underlying cable structure therefore giving excellent performance in fire tests. The use of this product enables lower grade products in the interior of the cables to be used thus making the overall construction cheaper.
For data cable a fast extrusion grade is desirable; TP519C with its low viscosity and high output is particularly suited to this application. In certain circumstances, this grade can also be used on extruders with PVC screws.
If very high temperature performance is needed then a crosslinked grade may be the choice. Most of our insulation grades can also be used as sheathing. One special application that requires operation for extended periods at 120oC is for photovoltaic solar panels and we have a newly developed grade in CT09/05.
There are many applications that require oil resistance such as offshore, railways and ship wiring. CT09/05 has excellent performance in common oils and is recomended for this purpose.
Grades available
|
Density |
Tensile |
Elongation |
Hot |
Limiting oxygen |
Temperature |
Data |
||
| @80oC | @90oC | @100oC | ||||||
| TP519C High output, easy process thermoplastic HFFR sheathing | ||||||||
|
1.50 |
13 |
140 |
15 |
- |
- |
31 |
270 |
|
|
TP521 General purpose, highly crack resistant thermoplastic HFFR sheathing |
||||||||
|
1.50 |
13 |
160 |
15 |
30 |
- |
30 |
270 |
|
|
TP543C High fire performance thermoplastic HFFR sheathing |
||||||||
|
1.57 |
11 |
160 |
25 |
- |
- |
45 |
>300 |
|
|
CT08-93 High char high fire performance HFFR sheathing |
||||||||
|
1.50 |
12.5 |
160 |
- |
40 |
- |
32 |
>300 |
|
|
TP564 Crack resistant high performance thermoplastic HFFR sheathing |
||||||||
|
1.35 |
17 |
225 |
- |
18 |
30 |
37 |
>300 |
|
|
CT09-12 Flexible thermoplastic general purpose HFFR sheathing |
||||||||
|
1.46 |
12 |
270 |
30 |
- |
- |
32 |
270 |
|
|
CT09-07 Easy-strip flexible thermoplastic general purpose HFFR sheathing |
||||||||
|
1.52 |
12 |
150 |
10 |
- |
- |
33 |
280 |
|
|
CT09-03:CT06-81A Oil resistant flexible silane crosslinkable HFFR sheathing |
||||||||
|
1.48 |
10 |
170 |
- |
- |
- |
29 |
- |
|
| 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 |
- |
- |
15 |
29 |
280 |
|
| CT06-30:CT06-81A General purpose silane crosslinkable HFFR sheathing | ||||||||
|
1.47 |
13 |
180 |
- |
- |
40 |
29 |
245 |
|
| SX545:CM540U General purpose silane crosslinkable HFFR sheathing | ||||||||
|
1.49 |
12 |
140 |
- |
- |
30 |
32 |
260 |
|
|
SX538:CM540U High fire performance silane crosslinkable HFFR sheathing |
||||||||
|
1.51 |
14 |
150 |
- |
- |
40 |
36 |
>300 |
|
|
SX559:CM540U High fire perfromance silane crosslinkable HFFR sheathing |
||||||||
|
1.49 |
14 |
165 |
- |
- |
40 |
36 |
>300 |
|
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.