Articles
Butyl Rubber
CENWAY BI IR 2302
Composition
Copolymer rubber of brominated Isobutylene-Isoprene, low mooney viscosity, normal cure rate grade.
Basic Properties
| Properties | Unit | Index | Test Method |
|---|---|---|---|
| Product Form | Off-white | Visual | |
| Mooney Viscosity (ML1+8,125℃) | MU | 32±5 | ISO 289/ASTM D1646 |
| Volatile Matter | wt% | ≤0.7 | ISO 248/ASTM D5668 |
| Bromine Content | wt% | 1.9±0.2 | CENWAY METHOD |
| Total Ash | wt% | ≤0.7 | ISO 247/ASTM D5667 |
| Antioxidant (non-staining) | wt% | ≥0.02 | CENWAY METHOD |
| Stabilizer | wt% | 1.3±0.3 | CENWAY METHOD |
Cure Characteristics
| Properties | Unit | Index | Test Method |
|---|---|---|---|
| FL | dN•m | 2.5±0.9 | ISO 6502/ASTM D5289 |
| FH | dN•m | 7.4±1.4 | ISO 6502/ASTM D5289 |
| ts1 | min | 2.4±1.5 | Rotorless cur （MDR） |
| tc50 | min | 5.2±1.9 | 160℃×40min, 0.5°arc |
| tc90 | min | 8.3±3.3 | 160℃×40min，0.5°arc |
| Test Formulation | ISO 7663/ASTM D 3958 BI IR2302 100, IRB#7 40, Zn0 5, St.A 1 | ||
Applications
Bromobutyl Rubber BI IR 2302 has superior air impermeability, outstanding performance of heat-resistance, chemical corrosion-resistance, thermal aging resistance, and good curing performance. It can be widely used for tire inner liners, medical stoppers, corrosion-resistance lining, protective clothing, shoes production and TPV industry.
Safety & Toxicity
BI IR 2302 is polymer in solid with stable performance. It is harmless and not dangerous for humans, plants and animals. For relevant safety data and reference, please refer to MSDS.
Packaging
25 ± 0.5 kg/bale in EVA film.
Pallets of plywood box of 1050 kg with 42 bales.
Pallets of metal box of 1200 kg with 48 bales.
Storage Life & Conditions
Two years with keeping storage & transport under 35℃ and away from sunlight.