Butadiene (chemical formula C₄H₆) is primarily used in the synthesis of synthetic rubber and polymers.
1. Synthetic Rubber (the main use)
- Styrene-butadiene rubber (SBR): A copolymer of butadiene and styrene, widely used in tire manufacturing (accounting for approximately 50% of global rubber consumption), conveyor belts, shoe soles, etc.
- Polybutadiene rubber (BR): Polymerized from butadiene, it has good elasticity and wear resistance, and is used in tire treads, hoses, shock-absorbing materials, etc.
- Nitrile rubber (NBR): A copolymer of butadiene and acrylonitrile, it has excellent oil resistance and is used in oil seals, fuel tank linings, oil-resistant hoses, etc.
- Chloroprene rubber (CR): Polymerized from chloroprene (produced from butadiene), it is weather-resistant and flame-retardant, and is used in wire and cable sheathing, adhesives, etc.
2. Synthetic Resins and Plastics
- ABS resin: A copolymer of butadiene, acrylonitrile, and styrene, it has high strength and good toughness, and is used in automotive parts, appliance casings, toys, etc.
- SBS elastomer: Styrene-butadiene-styrene block copolymer, used in shoe materials, asphalt modification, adhesives, etc.
- MBS resin: Used for toughening and modifying transparent plastics (such as PVC).
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