The flow behaviour of two polystyrene melts, styron 498 and styron 492J, in extrusion were investigated by using a capillary rheometer.

• 应用毛细管流变仪,考察了两种聚苯乙烯-Styron498(PS498)和Styron492J(PS492J)熔体挤出过程中的流动行为及其影响因素。