PBR 1220 is a specific type of synthetic rubber known as polybutadiene rubber (PBR). It is a polymer made from the polymerization of butadiene, which is a monomer with four carbon atoms and two double bonds (1,3-butadiene). Polybutadiene rubber is a type of elastomer, meaning it can undergo significant deformation and return to its original shape when the stress is removed. PBR is commonly used in various industrial and commercial applications due to its unique properties, including:
High resilience: PBR can withstand repeated deformation without permanent damage, making it suitable for applications requiring flexibility and durability.
Low glass transition temperature: PBR remains flexible and elastic even at low temperatures, making it valuable for cold weather applications.
Good resistance to abrasion: PBR has excellent wear resistance, making it suitable for use in tires, conveyor belts, and other applications where abrasion is a concern.
High tear strength: PBR exhibits resistance to tearing, which is essential in applications subject to mechanical stress.
High impact resistance: PBR can absorb shocks and impacts effectively, making it valuable in engineering and automotive components.
One of the most significant applications of PBR is in the tire industry, where it is commonly blended with other rubbers like styrene-butadiene rubber (SBR) and natural rubber to achieve the desired balance of properties for tire performance. PBR is also used in various other products such as belts, hoses, gaskets, footwear soles, and other rubber goods.
Tire Manufacturing: PBR is a key component in the production of tires. It is often blended with other rubbers like SBR and natural rubber to achieve the desired tread properties, rolling resistance, and grip for different types of tires, from passenger cars to heavy-duty trucks.
2. Belts and Hoses: PBR's high resilience and good resistance to abrasion make it ideal for manufacturing conveyor belts, power transmission belts, and hoses used in industrial settings.
3. Footwear: PBR is used in the production of shoe soles, especially for sports shoes and other applications where high resilience and wear resistance are essential.
4. Seals and Gaskets: PBR's high tear strength and good resistance to chemicals make it suitable for seals and gaskets used in various industries, including automotive, aerospace, and machinery.
5. Adhesives and Sealants: PBR can be used as a binder in adhesives and sealants to improve flexibility and adhesion properties.
6. Vibration Isolation: PBR is used in the construction of vibration isolation mounts, which are used to dampen vibrations and reduce noise in industrial machinery and vehicles.
7. Coatings and Paints: PBR can be used as an additive in coatings and paints to enhance their elasticity and impact resistance.
8. Consumer Goods: PBR is found in various consumer goods like erasers, rubber bands, and grips due to its flexibility and elasticity.
9. Engineering Components: PBR is used in engineering components that require high impact resistance and durability, such as wheels, bumpers, and vibration dampers.
10. Polymer Modification: PBR can be used as a modifier to enhance the properties of other polymers, improving their elasticity and impact resistance.
Item
Unit
Specification
Result
Test Method
Raw Mooney Viscosity
MU
41-49
45
ASTM D1646-07
Cis Content
WT%
Min.96
96.4
Internal Method
Volatile Matter Content
WT%
Max. 075
0.5
ASTM D5668-09
Ash Content
WT%
Max. 0.3
0.07
ASTM D1416
Compound1 Mooney Viscosity
MU
Max. 77
71
ASTM D1646
Tensile Strength (35 min)
Kg.f/cm³
Min.150
162
ASTM D412-06
Elongation at Break (35min)
%
Min.440
460
ASTM D412-06
300% Modulus at 145°C
25 Min
kg/cm²
68 – 108
76
ASTM D412-06
35 Min
74 -114
92
50 Min
74 – 114
92
* 35 ±0.5 KG bales wrapped with polyethylene film.
* 36 bales per crate Wooden box pallet, each pallet around (1260±18 KG).
