Today's KNOWLEDGE Share: SEBS -Styrene ethylene butadiene styrene

Today's KNOWLEDGE Share:
SEBS -Styrene ethylene butadiene styrene

SEBS has excellent aging resistance, plasticity and high elasticity. It can be processed and used without vulcanization. Leftover materials can be reused. It is widely used in the production of high-grade elastomers, plastic modifications, adhesives, lubricant tackifiers, fillers and sheathing materials for wires and cables, etc.

1) Product characteristics
SEBS is the hydrogenation product of thermoplastic elastomer SBS, which is often called hydrogenated SBS. This kind of hydrogenated SBS is called SEBS for short because it has a high content of 1,2 structure and is composed of polystyrene (s) - Polyethylene (E) - polybutene-1 (b) - polystyrene (s) after hydrogenation.

SEBS was first industrialized in the world by shell in 1974, and its trade name is kratong. With the growth of SEBS application, more and more manufacturers participate in the development and production of SEBS. So far, the global SEBS production and sales capacity has reached 200000 tons, including 110000 tons / year of shell company and a total of 90000 tons of production capacity of other manufacturers.

Product use:
1. SEBS can produce elastomers with shore hardness of a0-95 by mixing with polypropylene, naphthenic oil or hydrogenated naphthenic oil, white oil, etc. these elastomers have excellent surface texture, weather resistance and anti-aging performance, and can be widely used in soft contact materials such as handles, stationery, toys, sports equipment, handshakes, sealing strips, wires and cables, toothbrush handles and other coating materials.
2. SEBS is used to toughen nylon (PA6), polycarbonate (PC), polyphenylene oxide (PPO), polyester (PET, PBT), polypropylene (PP) and compatibilizer for plastic blending through chemical modification or blending. Maleic anhydride grafted SEBS has better effect as compatibilizer and toughener of these materials. Nanjing plastic Tai polymer Technology Co., Ltd. is the better one in China.
3. SEBS can be used as compatibilizer of engineering plastics, such as PE and PS.
4. SEBS blended with polypropylene, white oil, flame retardant, etc. can be used to produce the sheath or outer skin of wires and cables.
5. SEBS can be used to produce high-grade adhesives and sealants by cooperating with C5 and other petroleum resins.
6. SEBS can be directly used as lubricant viscosity index stabilizer due to its aging resistance and temperature resistance.

Source:Chris Lee

#elastomers #sebs #wire #cables #adhesives #automotive