Evoprene™ 3275

Category: SBS , Styrene Butadiene Styrene Block Copolymer
Manufacturer: AlphaGary
Trademark: Evoprene™
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: SIKdCg_Evoprene-3275.pdf
PRICE: ​Order Products​ email   sales@su-jiao.com
Wechat: WECHAT
Message
The Evoprene™ Standard series is based mostly on SBS (styrene-butadiene -styrene) block copolymer rather than the hydrogenated SEBS type. This is a lower cost polymerso these grades are generally available at reduced cost compared with the Evoprene™ G or GC grades. SBS is the block copolymer form of SBR rubber and the properties generally mirror those of its vulcanisable cousin. Compounds produced from SBS block copolymer are suitable for a wide range of applications including extruded door, window and furniture seals and rubbing strips, mats, bump stops, grommets, coat hanger pads, toy components etc. Compounds remain flexible to very low temperatures (-60°C, - 75°F) and can be used at up to +55 - 60°C (130 - 140°F). A wide range of hardnesses is available from the mid 20s Shore A to about 60 Shore D. Many compounds are formulated for good ozone resistance but whilst grades pigmented black can be used for external application non black grades will quickly harden and discolour outside.
General Information
Features
  • Block Copolymer
  • Good Colorability
  • Good Processability
  • Good Surface Finish
  • High Clarity
  • Ozone Resistant
  • Recyclable Material
  • Resilient
Uses
  • Grommets
  • Seals
  • Toys
RoHS Compliance
  • Contact Manufacturer
Appearance
  • Clear/Transparent
Forms
  • Pellets
Processing Method
  • Extrusion
  • Injection Molding
PhysicalNominal ValueUnitTest Method
Density 0.950g/cm³ISO 2782
Molding Shrinkage 0.50 to 1.2%
HardnessNominal ValueUnitTest Method
Shore Hardness (Shore A)40ISO 868
ElastomersNominal ValueUnitTest Method
Tensile Stress (100% Strain)1.40MPaISO 37
Tensile Stress (Yield)5.20MPaISO 37
Tensile Elongation (Break)830%ISO 37
Tear Strength 130kN/mISO 34-1
Compression Set (22°C, 72 hr)35%ISO 815
Additional InformationNominal ValueUnitTest Method
M-S Flow 0.883MPaInternal Method
Ozone Resistance 2crackInternal Method
InjectionNominal ValueUnit
Suggested Max Regrind 20%
Rear Temperature 160 to 180°C
Middle Temperature 160 to 180°C
Front Temperature 160 to 180°C
Nozzle Temperature 150 to 170°C
Processing (Melt) Temp 220°C
Mold Temperature 15.0 to 30.0°C
Injection Rate Fast
Vent Depth 0.020 to 0.050mm
Note Message
1 .Method Ba, Angle (Unnicked)
2 .100 pphm, 20%str
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