Bromobutyl rubber is an isobutylene-isoprene copolymer elastomer containing active bromine. With excellent air tightness, damping, heat resistance, chemical resistance, and ozone aging resistance, as well as good vulcanization performance and compatibility, it can be widely used in tires, medical plugs, anticorrosive lining, protective clothing, shock-absorbing parts, shoe materials, and other fields.
1. Excellent airtight performance: Its air permeability is 1/7 of natural rubber, and 1/5 of styrene-butadiene rubber, making air pressure in tires sufficiently stable to ensure long periods of drive and promote low-carbon life.
2. Easy to process and more environmentally friendly: Chambroad Sinopoly’s new bromobutyl rubber can reduce the amount of humidity in the production process through improvements in product purity and molecular weight distribution, thus more environmentally friendly.
3. Greater applicability: Specially designed for waterproofing, electrical appliances damping, sporting goods, and other emerging markets.
Used in tires, medical plugs, anticorrosive lining, protective clothing, shock absorbing parts, shoe materials, and other fields.
| Bromobutyl rubber | ||||
| Item | Unit | Trademark | ||
| BIIR2828 | BIIR2249 | BIIR2332 | ||
| Appearance | White to beige lumpy | |||
| Mooney viscosity | ML(1+8)125℃ | 32.0±4.0 | 46.0±4.0 | 32.0±4.0 |
| Bromine | (mass fraction) % | 2.00±0.20 | 2.00±0.20 | 2.10±0.20 |
| Volatile matter | (mass fraction) % | ≤0.50 | ≤0.50 | ≤0.50 |
| Ash | (mass fraction) % | ≤0.7 | ≤0.7 | ≤0.7 |
| FH | dN ·m | 6.9±2.0 | 8.2±2.0 | 7.5±2.0 |
| FL | dN ·m | 2.1±1.0 | 2.7±1.0 | 2.5±1.0 |
| Ts1 | min | 2.9±1.2 | 3.8±1.2 | ≥1.5 |
| T50 | min | 5.3±1.5 | 6.0±1.5 | 4.3±1.5 |
| T90 | min | 8.4±2.0 | 9.0±2.0 | 7.4±2.0 |
| Stabilizer | (mass fraction) % | 1.2-1.6 | 1.2-1.6 | 1.0-1.6 |