PolyButadiene Rubber (PBR) Definition
Polybutadiene [butadiene rubber BR] is a synthetic rubber. PBR is a polymer formed from the polymerization of the monomer 1, 3-butadiene. Polybutadiene has a high resistance to wear and is used especially in the manufacture of tires, which consumes about 70% of the production. Another 25% is used as an additive to improve the toughness (impact resistance) of plastics such as polystyrene and acrylonitrile butadiene styrene (ABS). PBR accounted for about a quarter of total global consumption of synthetic rubbers in 2012. It is also used to manufacture golf balls, various elastic objects and to coat or encapsulate electronic assemblies, offering high electrical resistivity.
Huei Jie Oil is one of the big producers of PolyButadiene Rubber (PBR) in Iran.
PolyButadiene Rubber (PBR) Applications
- Used in the inner tube of hoses for sandblasting, along with natural rubber.
- Used in the cover of hoses, mainly pneumatic and water hoses.
- Used in railway pads, bridge blocks, etc.
- Used in the manufacturing of the high-restitution toy Super Ball.
- Used as a fuel in combination with an oxidizer in various Solid Rocket Boosters such as Japan’s H-IIB launch vehicle.
- Tires
- Conveyor belts
- Crack pads
- Footwear soles
- V-belts
- Golf balls
PBR CHARACTERISTICS
- Very low vinyl content.
- Very low glass transition temperature (-90 °C).
- Very high resilience.
- Good abrasion.
- Tear resistance.
- Low heat buildup.
Typical CHARACTERISTIC Units Values Test methods Compound Mooney Viscosity MU MAX 77 ASTM D – 1646 Tensile Strength(35 Min) Kgf/cm3 MIN 150 ASTM D412 Elongation at Break (35 Min) % MIN 440 ASTM D412 300% Modulus at 145 °C 25 Min Kgf/cm3
68-108 ASTM D412
35 Min 74-114 50 Min 74-114