SEBS is an essential thermoplastic elastomer that exhibits characteristics similar to uncured rubbers. Its key properties include:
- Robustness
- Flexibility
- High resistance to heat
- High resistance to UV radiation
- Ease of processing
SEBS is derived through selective and partial hydrogenation of SBS (Styrene-Butadiene-Styrene) copolymer. This process enhances several properties:
- Thermal stability
- Resistance to oil
- Weathering resistance
However, it’s important to note that the hydrogenation process, while improving certain properties, also has some drawbacks:
- Diminished mechanical performance
- Increased polymer cost
Applications and Blending:
SEBS is frequently blended with other polymers to enhance their performance:
- Acts as an impact modifier for engineering thermoplastics
- Serves as an impact modifier for polypropylene
- Often combined with oils and fillers to:
- Reduce costs
- Improve specific properties
Primary applications of SEBS include:
- Hot melt pressure-sensitive adhesives
- Toys
- Shoe soles
- Modifier for bitumen products used in:
- Flooring
- Road asphalt applications
In summary, SEBS offers a unique combination of properties that make it valuable in various applications, particularly when blended with other materials. Its improved thermal stability and resistance to environmental factors come at the cost of some mechanical performance and increased production expenses. However, its versatility in enhancing other materials and its use in diverse products make it a significant player in the thermoplastic elastomer market.