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材料与配方 吴波 等·高胶粉、SBS 和 SEBS 增韧 rPS 复合材料结构与性能研究

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Research on the structure and properties of rPS composites toughened
by high rubber powder, SBS, and SEBS

Wu Bo, Zhou Min, Gao Lingqiang, Gong Yi
(Sichuan Yibin Plus Packaging Material Co. LTD., Yibin 644007, Sichuan, China)
Abstract: This article investigates the toughening modification of recycled polystyrene (rPS) using
high rubber powder, SBS, and SEBS. The mechanical properties, melt flow properties, microstructure, and
toughening mechanism of the toughened rPS blend were studied and analyzed through analysis and testing
of the notch impact performance, tensile performance, bending performance, melt flow performance, and
SEM of the toughened rPS modified material. The results showed that high rubber powder, SBS, and SEBS all
have toughening effects on rPS. SEBS has the best toughening effect on rPS, forming an interpenetrating
network with the matrix; SBS followed closely, forming a strong interfacial bonding between the two phases;
Although high rubber powder can play a certain toughening role, poor compatibility leads to unclear
toughening effect. Both SBS and SEBS can be used as good toughening agents for rPS.
Key words: recycled polystyrene; high rubber powder; SBS; SEBS; compatibility; toughening modification
(R-03)

2024 第 50 卷 ·45·
年