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首页> 外文期刊>Journal of Plastic Film & Sheeting >Effects of aragonite calcium carbonate on barrier and mechanical properties of a three-layer co-extruded blown low-density polyethylene film
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Effects of aragonite calcium carbonate on barrier and mechanical properties of a three-layer co-extruded blown low-density polyethylene film

机译：文石碳酸钙对三层共挤吹塑低密度聚乙烯薄膜阻透性和力学性能的影响

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摘要

The study is aimed to find whether the location of the calcium carbonate added in a three-layer co-extruded blown film has an impact on film's barrier and mechanical properties. Aragonite calcium carbonate-added low-density polyethylene films were produced at various weight ratios and layer structure through a three-layer co-extrusion blown film line. The scanning electron microscopy micrographs were obtained to understand the dispersion on the calcium carbonate and the morphology related to the film barrier and mechanical properties. The study found that adding calcium carbonate into the center layer of the three-layer co-extruded blown film significantly enhanced the barrier properties. The oxygen and water vapor barrier of the blown film improved 50% and 40%, respectively, in the presence of I8.38wt% calcium carbonate. Adding calcium carbonate into the center layer does not change the tensile strength of the blown film to a great extent when the filler concentration is between 9.12 wt% to 18.38 wt%. However, the addition of the calcium carbonate reduced the film's impact strength by 50 to 70% in the presence of 9.17 wt% to 31.54 wt% calcium carbonate for both center layer reinforced and blended blown film.
机译：该研究旨在发现在三层共挤吹塑薄膜中添加碳酸钙的位置是否会对薄膜的阻隔性和机械性能产生影响。通过三层共挤出吹塑薄膜生产线，以各种重量比和层结构生产添加了文石的碳酸钙低密度聚乙烯薄膜。获得扫描电子显微镜显微照片以了解在碳酸钙上的分散性以及与膜阻挡层和机械性能有关的形态。研究发现，在三层共挤吹塑薄膜的中间层添加碳酸钙可显着提高阻隔性能。在存在183.38wt％的碳酸钙的情况下，吹塑薄膜的氧气和水蒸气阻隔性分别提高了50％和40％。当填料浓度在9.12wt％至18.38wt％之间时，将碳酸钙添加到中心层中不会在很大程度上改变吹塑膜的拉伸强度。然而，对于中心层增强和共混吹塑薄膜，在存在9.17重量％至31.54重量％的碳酸钙的情况下，添加碳酸钙使膜的冲击强度降低了50至70％。

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