Trinseo BUNA™ cis 132 Schkopau High-cis Polybutadiene Rubber (PBR)

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Trinseo BUNA™ cis 132 Schkopau High-cis Polybutadiene Rubber (PBR)
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	BUNA™ CIS 132–Schkopau is a stereospecific butadiene with a high 1,4-cis content. It is manufactured by a solution process using an organo-metallic nickel catalyst which produces a consistent light coloured polymer with low ash content. BUNATM cis 132–Schkopau contains a non-staining stabilizer. Application: BUNATM cis 132–Schkopau is widely used in the tire industry but also in the production of conveyor belts and other rubber articles which are exposed to high cyclical stress. It offers good abrasion resistance, high resilience, low hysteresis, and a low glass transition temperature. BUNATM cis 132–Schkopau offers excellent processability and may be blended with natural rubber and styrene butadiene (SBR), isoprene (IR), nitrile (NBR), or polychloroprene (CR) synthetic rubbers. Due to its non-staining stabilizer BUNATM cis 132–Schkopau is suitable for light-colored rubber articles also when compounded with selected thermoplastics. Information provided by Trinseo.
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Physical Properties	Original Value	Comments

Density	0.910 g/cc
Volatiles	0.24 %	1 hr at 105°C in a hot air oven, 5 g sample; ASTM D5668
Mooney Viscosity	45 @Temperature 100 °C	MU, ML 1+4; ASTM D1646
Ash	0.010 %	ASTM D5667

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	17.4 MPa	Cure: 45 min at 145°C; ASTM D412
Elongation at Break	490 %	ASTM D412
300% Modulus	0.00910 GPa @Strain 300 %	ASTM D412

Descriptive Properties
Cis-1,4 content	95 percent	SM (FTIR)
Gel content	3%	SM
Rheometer	11.6 min	tc(90), ASTM D5289
	16.9 dNm	MH, ASTM D5289
	2.7 dNm	ML, ASTM D5289
	5.9 min	ts2, 160°C, ASTM D5289
	8.0 min	tc(50), ASTM D5289
Test Formulation	0.9 Part	Accelerator (TBBS),ASTM D3189
	1.75 Parts	Sulfur, ASTM D3189
	100 Parts	Polymer, ASTM D3189
	15 Parts	Plasticizer, ASTM D3189
	2 Parts	Stearic acid, ASTM D3189
	3 Parts	Zinc oxide, ASTM D3189
	60 Parts	Carbon black IRB8, ASTM D3189

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PDWST235 / 142444

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