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SBS Block Copolymer

SBS Block Copolymer

SBS Block Copolymer is a thermoplastic elastomer widely used for asphalt modification to enhance pavement performance. Its molecular structure consists of rigid polystyrene blocks that provide mechanical strength and flexible butadiene blocks that offer excellent elasticity and recovery.

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Description

In highway pavement systems, the incorporation of SBS significantly improves the viscoelastic behavior of the asphalt binder, resulting in the following engineering benefits:
1.Improved High-Temperature Stability: Enhances rutting resistance under heavy traffic loads and high-temperature conditions.
2.Enhanced Low-Temperature Crack Resistance: Increases flexibility and elongation at low temperatures, minimizing the risk of thermal cracking.
3.Extended Fatigue Life: Reduces the propagation of microcracks, improving the fatigue resistance of the pavement structure.
4.Better Adhesion and Compatibility: Exhibits good compatibility with asphalt, forming a stable modified binder that improves adhesion between binder and aggregates.

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