Hide × Add Image Search Includes Search Share on social networks PBR & SBR Overview Reviews PBR 1220: Polybutadiene Rubber (PBR) is a synthetic rubber 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). It is also used to manufacture golf balls, various elastic objects and to coat or encapsulate electronic assemblies, offering high electrical resistivity. Properties of PBR 1220 Value Unit Test Method • Raw Material Cis Content Min 97 wt ZEON R-130 A Raw Mooney viscosity 41-49 ML-4 ASTM D 1646 Volatile matter Max 0.5 %wt ASTM D 1416 Ash content Max 0.3 % wt ASTM D 1416% • Compounds Compounds Mooney viscosity ML-4 ML-4 ASTM D 1646 Tensile (35min) 1.09-1094 Kgf/cm2 ASTM D 412 Elongation (35 min) 104-106 % ASTM D 412 300% Modulus at 145℃ 25 min 35 min 50 min 68-108 74-114 47-114 Kgf/cm2 ASTM D 412 Rehometer at 160 ℃ MH ML TS-1 T50 T90 32.0-40.0 5.2-11.2 2.1-6.1 6.0-10.4 8.3-13.1 Ibf/in Ibf/in Min Min Min ASTM D 3189 SBR 1502: Styrene-butadiene rubber (SBR) describe families of synthetic rubbers derived from styrene and butadiene. These materials have good abrasion resistance and good aging stability when protected by additives. About 50% of car tires are made from various types of SBR. The styrene/butadiene ratio influences the properties of the polymer: with high styrene content, the rubbers are harder and less rubbery Parameters of SBR 1502 Unit Values Test Method Mooney viscosity (ML 1+4 @ 100 oC) MU 46-58 ASTM D1646 Mooney viscosity (ML 1+4 @ 100 oC)-compound² MU <84 ASTM D1646 Volatile matters % wt. < 0.75 ASTM D5668 Total ash % wt. < 1.5 ASTM D5667 Organic acids % wt. 4.5 -7 ASTM D5774 Soaps % wt. < 0.5 ASTM D5774 Bounded styrene % wt. 22.5-24.5 ASTM D5775 Tensile strength(35 min cured)² kg/cm² >250 ASTM D 412 Ultimate elongation(35 min cured)² % >350 ASTM D 412 300 % Modulus(35 min cured)² kg/cm² 167-207 ASTM D 412 Please email us for further information. . Sender name is required Email is required Email is not valid Show my email. Characters left: 400 Comment is required Generate New Image Generate New Image Alert me when published. Submit AddToCartModal ×