Functional chemical additives improve the high and low temperature properties and storage stability of SBS modified bitumen through chemical bonding. In the functional chemical additives +SBS modified bitumen system, the chemical bonding action of functional chemical additives causes the SBS molecular chains dispersed in the bitumen system to form a three-dimensional network structure, and forms a network structure with the bitumen system.

Such chemical mesh is not easy to destroy under high temperature, low temperature, needling, stretching and other conditions, and has excellent physical properties and storage stability. Therefore, the addition of functional chemical additives can significantly improve the high and low temperature properties and storage stability of SBS modified bitumen.

Specifically, the addition of functional chemical additives can improve the softening point, low temperature flexibility, needle penetration, 5℃ ductility and storage stability of SBS modified bitumen. In addition, the addition of functional chemical additives can also reduce the temperature of bitumen modification processing, shorten the processing time of bitumen modification, save production costs, and improve production efficiency.

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