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SBR
Material Type
Rubber
Material Full Name
Styrene-Butadiene Rubber
Process Compatibility
Compression Molding, Injection Molding, Extrusion,
Bonding Rubber to Metal, Bonding Rubber to Plastic
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SBR Description
Price
Strength
Weakness
Common Application
SBR Properties for Injection Molding
SBR can be processed by compression, injection, extrusion, or overmolding. Each method needs different flow, curing, and bonding properties to ensure proper shape, durability, and performance.
| Property | Metric | English |
|---|---|---|
| Density | 0.94-0.98 g/cm³ | 58.69-61.25 lb/ft³ |
| Shore Hardness A | 30-95 | 30-95 |
| Tensile Strength | 3.48-20.68 MPa | 500-3000 PSI |
| Elongation at Break | 450-600% | 450-600% |
| Min Temp. | -50~-35°C | -60~-30º F |
| Max Temp. | 100~120°C | 210~250º F |
*Please Note: Material properties are for reference only and may vary by brand.
How Additives Improve SBR Properties?
SBR can be modified to enhance its properties. One common method is through incorporating additives into the SBR during the mixing process. Some of the additives include:
- Fillers (e.g., carbon black, silica): Enhance tensile strength, abrasion resistance, and tear strength.
- Plasticizers (e.g., oils, resins): Improve flexibility and reduce stiffness.
- Antioxidants: Prevent degradation caused by exposure to oxygen and heat, thereby extending the service life of SBR products.
- Antiozonants: Protect against cracking and deterioration caused by ozone exposure, particularly in outdoor applications.
- Flame retardants: Reduce flammability and improve fire resistance in applications where fire safety is a concern.
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FAQs of SBR Materials
Is SBR material recyclable?
Is SBR material suitable for sealing applications?
Can SBR be used in food-contact applications?
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