Black Bear opportunity: High performance compound ingredient for insulating tapes, EH rated safety shoes, cables and general moulded rubber goods that come into contact with magnesium and aluminium to prevent corrosion problems.
Our carbon blacks provide an unique set of properties to enhance resistivity of your products while keeping mechanical and dynamic properties at a high level. BBC TR30(S) will drastically increase electrical resistivity making our grades very valuable for applications where electrical insulation is desired.
>> Key technical drivers
- High mechanical and dynamic reinforcement associated with either BBC TR30 or BBC TR30(S)
- High electrical resistivity (insulation)
- Avoid the addition of non-reinforcing fillers which negatively impacts performance
- Maintain lowest possible compound density by avoiding the use of mineral fillers of higher SG
The table on the right illustrates the high impact of Black Bear products on increasing electrical resistivity.
Comparing BBC grades’ electrical resistivity against N220 and N330 in a 60 ShA natural rubber recipe
| Recipe | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| Natural Rubber TRS-10 | 100.0 | 100.0 | 100.0 | 100.0 |
| N220 | 47.0 | |||
| N330 | 52.0 | |||
| BBC TR30S | 60.0 | |||
| BBC TR30 | 60.0 | |||
| Other ingredients | 10.6 | 10.6 | 10.6 | 10.6 |
| Total phr | 157.6 | 162.6 | 170.6 | 172.6 |
| Total resistivity | <10 kΩ | 18 kΩ | 1.1 TΩ | 2 TΩ |