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SEBS PROPERTIES AND APPLICATIONS

June 30,2022

Styrene-ethylene-butylene-styrene, also known as SEBS, is an important thermoplastic elastomer (TPE) whose behavior is similar to that of rubber without vulcanization. SEBS is strong and flexible, with excellent heat resistance and ultraviolet resistance, and easy to process. It is produced by partial and selective hydrogenation of styrene-butadiene-styrene copolymer (SBS), which can improve the thermal stability, weather resistance and oil resistance, and make SEBS steam sterilized. However, hydrogenation also reduces the mechanical properties and increases the cost of polymer.

 SEBS elastomer is usually mixed with other polymers to enhance its performance.

 They are used as impact modifiers for engineering thermoplastics and tougheners/tougheners for transparent polypropylene (PP). Usually, oil and filler are added to reduce the cost and/or further modify the performance.

 Important applications include hot-melt pressure-sensitive adhesive, sole of toy products and TPE modified asphalt products for road paving and roofing applications.

1, wire and cable sheath and insulation tape

SEBS is an excellent material for making wire and cable sheaths and insulation tapes because of its excellent electrical insulation, weather resistance and aging resistance, good flexibility and high strength, and wide range of application temperature. The amount used in this area is relatively large in the United States.

Its cost is lower than that of polyester or polyurethane thermoplastic elastomer. SEBS can replace vulcanized rubber, PVC, cross-linked polyethylene, etc., and it has excellent performance in battery cable, transformer cable insulation sheath, instrument wire, etc. SEBS has a broad application prospect in electric wires, showing strong competitiveness.