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首页> 外文期刊>Journal of Polymers and the Environment >Mechanical Properties and Morphology of Polypropylene/ Poly(ethylene-co-octene) Blends
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Mechanical Properties and Morphology of Polypropylene/ Poly(ethylene-co-octene) Blends

机译：聚丙烯/聚乙烯-共辛烯共混物的力学性能和形态

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摘要

The polypropylene (PP)/poly(ethylene-co-octene) (POE) blends was prepared by means of a twin screw extruder in a range of temperature from 185 to 195 ℃. The mechanical properties including tensile, flex-ural and impact of the PP/POE blends were measured at room temperature to identify the effect of the POE content on the mechanical properties. It was found that the Young's modulus, tensile strength and tensile elongation at break decreased nonlinearly with increasing the POE weight fraction. While the V-notched and unnotched impact fracture strength increased nonlinearly with an increase of the POE weight fraction. The flexural modulus and strength decreased roughly linearly with increasing the POE weight fraction. Furthermore, the impact fracture surface of the blends was observed by using a scanning electronic microscope and the toughening mechanisms were discussed.
机译：聚丙烯（PP）/聚（乙烯-共辛烯）（POE）共混物是通过双螺杆挤出机在185至195℃的温度范围内制备的。在室温下测量PP / POE共混物的机械性能（包括拉伸，挠曲和冲击），以确定POE含量对机械性能的影响。发现随着POE重量分数的增加，杨氏模量，拉伸强度和断裂拉伸伸长率非线性降低。 V形缺口和无缺口冲击断裂强度随POE重量分数的增加而非线性增加。弯曲模量和强度随POE重量分数的增加而大致呈线性下降。此外，通过使用扫描电子显微镜观察共混物的冲击断裂表面，并讨论了增韧机理。

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