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KKPC KOSYN 1721 Styrene Butadiene Rubber

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer Korea Kumho Petrochemical Co., Ltd.
Trade Name KOSYN
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF KKPC KOSYN 1721 Styrene Butadiene Rubber.pdf
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Material Notes:
Styrene Butadiene RubberCharacteristics: KOSYN SBR, a useful synthetic rubber, is a copolymer made from butadiene and styrene by cold emulsion polymerization. It has superior abrasion resistance and heat resistance in comparison with natural rubber, as well as widely useful physical properties of easy vulcanization and stable scorch properties. The products of KOSYN SBR are classified according to the emulsifying agent and stabilizer used in manufacturing process.Applications: Tires, footwear, rubber hose, auto equipment and other rubber products for industrial use.Additional Notes: Bound Styrene: 40%Extender Oil: 37.5; AromaticStabilizer: StainingEmulsifier: Mixed soap of rosin acid and fatty acidCoagulant: Salt-AcidCompound Properties: SRB 100, ZnO 3, S/A 1, HAF Black (IRB#7) 50, Accelerator TBBS1, Sulfur 1.75, Total: 156.75Vulcanization: 145°C *35 m., Press VulcanizationThis product is so sensitive to sunlight and humidity that it can be tarnished and caused deterioration of quality if exposed. It is recommended to store it in cool and shady area lest it should be exposed to direct sunlight. Do not expose to incompatible materials or contaminants.Data provided by Korea Kumho Petrochemical Co., Ltd.
Physical Properties Metric English Comments
Density 0.970 g/cc
0.0350 lb/in³
Not Compounded
Mooney Viscosity 54

@Temperature 100 °C
54

@Temperature 212 °F
Raw; ML1+4
67

@Temperature 100 °C
67

@Temperature 212 °F
Compounded; ML1+4
Mechanical Properties Metric English Comments
Hardness, Shore A 61
61
Vulcanized
Tensile Strength, Ultimate 23.7 MPa
3440 psi
Vulcanized
Elongation at Break 620 %
620 %
Vulcanized
300% Modulus 0.0106 GPa
1.54 ksi
Vulcanized
Rebound 30 %
30 %
ASTM Test, Vulcanized
Flex Crack Resistance 15000
15000
145°C / 35 min., Press Vulcanization
Tear Strength 43.1 kN/m
246 pli
B-type, Vulcanized
Abrasion 0.19
0.19
De Mattia Flexometer: Cut Growth 2mm --> 15mm, Flexes
Compression Set 50 %

@Temperature 100 °C
50 %

@Temperature 212 °F
70 hrs, 25% def, Vulcanized
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