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Rulon Bearings

Dow SE SLR-4400 Solution polymerized Styrene Butadiene Rubber (S-SBR)
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes: SE SLR-4400 is manufactured by anionic solution polymerization using lithium initiator. It is a product with medium styrene and high vinyl content. The product is partially Sn-coupled and non-staining stabilized. SE SLR-4400 is widely used in the manufacture of high-quality technical rubber articles but also can be used in the tire industry. It is supplied in bales weighing 25 kg. Bales are wrapped in 50 micron PE film. At mixing temperatures above 110°C, the rubber can be processed with the packaging film.

Information provided by Dow
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Physical PropertiesMetricEnglishComments
Viscosity Measurement  1.8
@Temperature 160 °C		1.8
@Temperature 320 °F		[dNm]; ML, (0.5 RAD); ASTM D5289
 6.0
@Temperature 160 °C		6.0
@Temperature 320 °F		[min]; ts1, (0.5 RAD); ASTM D5289
 8.0
@Temperature 160 °C		8.0
@Temperature 320 °F		[min]; T50, (0.5 RAD); ASTM D5289
 13
@Temperature 160 °C		13
@Temperature 320 °F		[min]; T90, (0.5 RAD); ASTM D5289
 20.8
@Temperature 160 °C		20.8
@Temperature 320 °F		[dNm]; MH, (0.5 RAD); ASTM D5289
Mooney Viscosity 55
@Temperature 100 °C		55
@Temperature 212 °F		[MU]; ML 1+4, massed sample; ASTM D1646
Vinyl Acetate Content 35 %35 %FTIR, internal method
Collected Volatile Condensable Material 0.15 %0.15 %ASTM D5668
Storage Temperature <= 13.0 °C<= 55.4 °F
 
Chemical PropertiesMetricEnglishComments
Styrene Content 25 %25 %FTIR, internal method
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 64
@Thickness 12.5 mm		64
@Thickness 0.492 in		(25 min / 160°C); ASTM D2240
Tensile Strength, Ultimate 22.0 MPa3190 psiDie C (35 min / 145°C); ASTM D412
Tensile Stress at Strain 13.0 MPa
@Strain 300 %		1890 psi
@Strain 300 %		ASTM D412
Elongation at Break 430 %430 %ASTM D412
Rebound 53 %
@Thickness 12.5 mm		53 %
@Thickness 0.492 in		Schob pendulum, (25 min / 160°C); ISO 4662
 
Thermal PropertiesMetricEnglishComments
Vicat Softening Point 92.2 °C198 °F
Glass Transition Temp, Tg -47.2 °C-53.0 °FHR 10 K/min; half height; DSC
 
Processing PropertiesMetricEnglishComments
Shelf Life >= 12.0 Month>= 12.0 Month
 
Descriptive Properties
Accelerator (CBS) wt%1
Aromatic Oil wt%5
Carbon Black wt%50; IRB 7
Stearic Acid wt%1.5
Sulfur content, %1.75
Zinc Oxide wt%3

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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