机构地区: 广西民族大学化学与生态工程学院
出 处: 《中国塑料》 2010年第11期72-75,共4页
摘 要: 采用熔融纺丝法研究了低密度聚乙烯(PE-LD)、线形低密度聚乙烯(PE-LLD)和高密度聚乙烯(PE-HD)熔体的拉伸流变性能。结果表明,PE-LD、PE-LLD和PE-HD熔体的熔体强度都随温度的升高而下降;随着拉伸应变速率和温度的升高,PE-LD、PE-LLD和PE-HD熔体的拉伸黏度下降;随着挤出速率的提高,相同应变速率下,PE-LD、PE-LLD和PE-HD熔体的拉伸应力和拉伸黏度都有所降低。 The extensional rheological behaviors of low-density polyethylene (PE-LD), linear lowdensity polyethylene (PE-LLD), and high-density polyethylene (PE-HD) were studied in melt spinning process. It showed that both melt strength and extensional viscosity of PE-LD, PE-LLD, and PE-HD melt decreased with increasing temperature. With increasing extensional strain rate, both extensional stress and extensional viscosity of PE-LD, PE-LLD, and PE-HD melt decreased.
关 键 词: 低密度聚乙烯 线形低密度聚乙烯 高密度聚乙烯 熔融纺丝 拉伸流变性能
领 域: [化学工程]