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首页> 外文期刊>Journal of Applied Polymer Science >OXYGEN BARRIER PROPERTIES OF POLYPROPYLENE/POLYAMIDE 6 BLENDS
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OXYGEN BARRIER PROPERTIES OF POLYPROPYLENE/POLYAMIDE 6 BLENDS

机译：聚丙烯/聚酰胺6混和物的氧气阻隔性能

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摘要

Effects of composition, compatibilization, and blending procedure on oxygen barrier properties of injection-molded polypropylene/polyamide 6 blends were investigated. The main attention was paid to the relationships between oxygen permeability, mechanical properties, and blend morphology. The effect of the polypropylene/polyamide 6 ratio was evident in blends with a homogeneous dispersion type of morphology. After the phase inversion, when polyamide became the continuous phase, the barrier properties of the blends were significantly improved and approached those of polyamide 6. Increasing the amount of the compatibilizer, maleic anhydride grafted polypropylene, was found to increase the permeability of the blend. The blending procedure had a significant effect on the permeability of the blends. The injection-molded blend exhibited a laminar type of morphology when polyamide 6 and the compatibilizer were preblended in a twin-screw extruder, and polypropylene was added later as a dry-blend before injection molding. The dispersed polyamide phase formed thin elongated platelets in the polypropylene matrix. This laminar morphology resulted in significant improvement of oxygen barrier properties approaching the level of the theoretical values calculated for corresponding coextruded structures. Moreover, both the tensile and impact properties of this particular blend were exceptionally good. (C) 1995 John Wiley & Sons, Inc. [References: 14]
机译：研究了组成，相容性和共混过程对注塑聚丙烯/聚酰胺6共混物氧阻隔性能的影响。主要关注氧气渗透性，机械性能和共混物形态之间的关系。聚丙烯/聚酰胺6比例的影响在具有均匀分散型形态的共混物中很明显。在相转化之后，当聚酰胺变成连续相时，共混物的阻隔性能显着提高并接近聚酰胺6的阻隔性能。发现增加相容剂马来酸酐接枝聚丙烯的量会增加共混物的渗透性。混合过程对混合物的渗透性有显着影响。当将聚酰胺6和增容剂在双螺杆挤出机中预混合时，注塑混合物显示出层状形态，随后在注塑之前添加聚丙烯作为干混物。分散的聚酰胺相在聚丙烯基质中形成了细长的薄片。这种层状形态导致氧气阻隔性能显着提高，接近为相应的共挤结构计算的理论值。而且，这种特殊混合物的拉伸和冲击性能都非常好。 （C）1995 John Wiley＆Sons，Inc. [参考：14]

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