Die swell of extrudate indicated that the relaxation rate of Sn-coupled SSBR compound was faster and the die swell was less obvious than that of ESBR.

• 挤出胀大效应表明锡偶联型SSBR混炼胶的弛豫速度比ESBR混炼胶的快，挤出胀大小，加工性能优于ESBR。