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首页> 外文期刊>Journal of Applied Polymer Science >Influence of the preparation on the mechanical, thermal, and gas permation properties of polypropylene/oligopinene thin films
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Influence of the preparation on the mechanical, thermal, and gas permation properties of polypropylene/oligopinene thin films

机译：制备方法对聚丙烯/低烟碱薄膜的机械，热和气体渗透性能的影响

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The mechanical, thermal, and gas permeation properties of polypropylene (PP)/oligopinene systems in the form of compression thin films 10 mum thick, which were prepared by quenching (with liquid nitrogen) and slow-cooling (15degreesC/min) techniques, were examined. The addition of oligopinene to PP changed the stress-strain curve of the polyolefin. Both for quenching and slow-cooling films, with a higher oligomer content, no more yielding was observed, and the elongation at break abruptly decreased with greater than 10% oligomer. The elastic modulus and stress at break changed according to the thermal conditions of the film preparation. Thermal analysis revealed that the blend system had two glass-transition temperatures for both types of films. The values of permeation to CO2 were independent of the film preparation and were practically unchangeable with the oligomer content in the blends, indicating that the overall decrease in the crystallinity was counterbalanced by the rigidity of the two amorphous phases. (C) 2003 Wiley Periodicals, Inc. [References: 14]
机译：通过淬火（用液氮）和慢冷（15℃/ min）技术制备的厚度为10um的压缩薄膜形式的聚丙烯（PP）/低聚戊二烯系统的机械，热和气体渗透性能为检查。向PP中添加低聚萜烯改变了聚烯烃的应力-应变曲线。对于低聚物含量较高的淬火和慢冷膜，均未观察到更多的屈服，并且当低聚物含量大于10％时，断裂伸长率突然降低。弹性模量和断裂应力根据薄膜制备物的热条件而变化。热分析表明，对于两种类型的薄膜，共混体系均具有两个玻璃化转变温度。渗透到CO2的值与膜的制备无关，并且几乎不会随共混物中的低聚物含量而变化，这表明结晶度的总体下降被两个非晶相的刚度所抵消。 （C）2003 Wiley Periodicals，Inc. [参考：14]

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