UBE UBEPOL VCR® 450 Synthetic Polybutadiene Rubber

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UBE UBEPOL VCR® 450 Synthetic Polybutadiene Rubber
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Characteristics: Broad molecular weight distribution type (Matrix BR). Good balanced between characteristics of VCR and the physical properties of general BR. Applications: Tires for passenger cars, trucks, buses, construction machinery, motorcycles and bicycles. Various industrial products such as polystyrene modifier, conveyor belts, hoses, rubber isolators and casters. Commodities such as shoe soles and golf balls. UBEPOL VCR® consists of high-cis BR and high-crystalline syndiotactic polybutadiene resin which is a special type of polymer alloy. UBEPOL VCR® can contribute to produce various advantages: to increase hardness, modulus of rubber product without adding filler. To reduce the volume or weight of rubber product by utilizing its reinforcing effect. To improve extrusion properties (extrusion output and dimensional stability) and roll mill shrinkage. Information provided by UBE Industries, LTD
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Physical Properties	Original Value	Comments

Specific Gravity	0.910 g/cc
Mooney Viscosity	39 @Temperature 100 °C	ML1+4
	60 @Temperature 100 °C	Compound. ML1+4. ASTM D3189

Mechanical Properties	Original Value	Comments
Hardness, Shore A	66	Curing time: 50 min
Tensile Strength	17.0 MPa
Elongation at Break	390 %
100% Modulus	2.80 MPa	Curing time: 50 min
200% Modulus	7.20 MPa	Curing time: 50 min
300% Modulus	12.9 MPa	Curing time: 50 min
Rebound	52 %	BS. Curing Time: 50 min
Tear Strength	59.0 kN/m	Curing time: 50 min
Abrasion	92	Lambourn. Index. Slip rate 60%. Curing time: 50 min
	93	Lambourn. Index. Slip rate 20%. Curing time: 50 min
	238	Pico. Index. Curing time: 50min
Compression Set	24 %	Curing time: 50 min

Descriptive Properties
Anti-Oxidant	Non-staining
Curing Characteristics	10.1	MH (dN*m). ASTM D3189
	12.4	Tc(90) min. ASTM D3189
	2	ML (dN*m). ASTM D3189
	3	Ts1 min. ASTM D3189
	8.8	Tc(50) min. ASTM D3189
Cut Generation (cycles)	>30 e4	Curing time: 50 min
Cut Growth Resistance (cycles)	12800	Cut length ; from 2mm to 15mm. Curng time: 50 min
Heat Build Up	0.09	P.S
	29 °C	?T
Microstructure	1	Trans. % wt. Microstructure of matrix polymer.
	1	Vinyl. % wt. Microstructure of matrix polymer.
	98	Cis. %wt. Microstructure of matrix polymer.
n-Hexane Insoluble (%wt)	3.8	SPB content in VCR
Package	35 kg bale

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PUBD9803 / 287266

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