KKPC KOSYN 1712H Styrene Butadiene Rubber

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KKPC KOSYN 1712H Styrene Butadiene Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Styrene Butadiene Rubber Characteristics: 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: 23.5% Extender Oil: 37.5; Aromatic Stabilizer: Staining Emulsifier: Mixed soap of rosin acid and fatty acid Coagulant: Salt-Acid Compound Properties: SRB 100, ZnO 3, S/A 1, HAF Black (IRB#7) 50, Accelerator TBBS1, Sulfur 1.75, Total: 156.75 Vulcanization: 145°C *35 m., Press Vulcanization This 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.
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Physical Properties	Original Value	Comments

Density	0.950 g/cc	Not Compounded
Mooney Viscosity	53 @Temperature 100 °C	Raw; ML1+4
	65 @Temperature 100 °C	Compounded; ML1+4

Mechanical Properties	Original Value	Comments
Hardness, Shore A	61	Vulcanized
Tensile Strength, Ultimate	236 kg(f)/cm²	Vulcanized
Elongation at Break	580 %	Vulcanized
300% Modulus	111 kg(f)/cm² @Strain 300 %	Vulcanized
Rebound	46 %	ASTM Test, Vulcanized
Flex Crack Resistance	15000	145°C / 35 min., Press Vulcanization
Tear Strength	43.0 kg(f)/cm	B-type, Vulcanized
Abrasion	0.17	De Mattia Flexometer: Cut Growth 2mm --> 15mm, Flexes
Compression Set	49 % @Temperature 100 °C	70 hrs, 25% def, Vulcanized

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PKKPC15 / 48746

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