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- Styron Buna® SB 1723 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)
Styron Buna® SB 1723 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR)
| Category | Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Styrene Butadiene Rubber |
| Manufacturer | Styron |
| Trade Name | Buna® |
| Port | Ningbo port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Styron Buna® SB 1723 Schkopau Cold Polymerized Emulsion Styrene Butadiene Rubber (E-SBR).pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
Composition: Buna® SB 1723 – Schkopau is manufactured by cold polymerization using mixed rosin acid /fatty acid soaps. In relation to solid rubber it is plasticized with 37.5 parts of TDAE oil which does comply with EU DIRECTIVE 2005/69/EC for use in tyres within the EU. A discoloring stabilizer is added during the production process.Application: Buna® SB 1723 – Schkopau is a general purpose rubber. It can be processed in all sectors of the tyre and rubber industry. The main application is tyre production.Test Formulation (ASTM D 3185 based on IRB7 black):Polymer - 100.0 parts by massIRB7 industry reference oil furnace carbon black - 50.0 parts by mass Zinc oxide - 3.0 parts by massSulphur - 1.75 parts by massStearic acid - 1.0 parts by massN-tert-butyl-2-benzothiazole sulphenamide (TBBS) - 1.0 parts by massInformation provided by Styron
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 0.930 g/cc | 0.0336 lb/in³ | |
| Volatiles | 0.30 % @Treatment Temp. 105 °C, Time 3600 sec |
0.30 % @Treatment Temp. 221 °F, Time 1.00 hour |
5 g in hot air oven; ASTM D5668 |
| Mooney Viscosity | 50 @Temperature 100 °C |
50 @Temperature 212 °F |
[MU] ML 1+4; ASTM D1646 |
| Ash | 0.050 % | 0.050 % | ASTM D5667 |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Tensile Strength at Break | 22.0 MPa @Treatment Temp. 145 °C, Time 2100 sec |
3190 psi @Treatment Temp. 293 °F, Time 0.583 hour |
Cure; ASTM D412 |
| Elongation at Break | 460 % | 460 % | ASTM D412 |
| 300% Modulus | 0.0133 GPa | 1.93 ksi | ASTM D412 |
| Chemical Properties | Metric | English | Comments |
|---|---|---|---|
| Styrene Content | 23.5 % | 23.5 % | Bound; ASTM D5775 |
| Descriptive Properties | Value | Comments |
|---|---|---|
| Composition | 0.047 | Organic Acid |
| 0.323 | Total Extractables | |
| Rheometer | 13.1 min | t<sub>c</sub> (90), ASTM D5289 |
| 17.3 dNm | MH, ASTM D5289 | |
| 2.4 dNm | ML, ASTM D5289 | |
| 5.1 min | t<sub>s</sub>2, test temperature 160°C; ASTM D5289 | |
| 7.6 min | t<sub>c</sub> (50), ASTM D5289 |
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