【摘要】 采用Brabender单螺杆挤出机熔融共混挤出制备聚丁烯-1/线性低密度聚乙烯(PB-1/LLDPE)共混合金,借助扫描电镜、偏光显微镜、差示扫描量热仪、电子万能试验机等分别对共混合金的相结构、结晶和力学性能进行了研究。结果表明:共混合金中PB-1与LLDPE相之间具有一定的相互作用;LLDPE的添加导致PB-1晶体的细化,并提高了两组分结晶的完善性,拉伸强度与这两组分拉伸强度的线性加和值相近。更多还原

【Abstract】 The blends of polybutene-1 and linear low density polyethylene( PB-1 / LLDPE) were prepared by melt blending through brabender single screw extruder. Morphology,crystallization and mechanical properties were studied via scanning electron microscope( SEM),polarized optical microscopy( POM),differential scanning calorimeter( DSC) and mechanical testing machines,respectively. The results showed that PB-1 and LLDPE phases in the blends had some interaction. After adding the LLDPE,the PB-1 formed small crystal and the crystal of two components became perfect,the tensile strength of the blends was closed to the values obtained by the linear addition method.更多还原