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首页> 外文期刊>RSC Advances >A highly-deformable piezoresistive film composed of a network of carbon blacks and highly oriented lamellae of high-density polyethylene
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A highly-deformable piezoresistive film composed of a network of carbon blacks and highly oriented lamellae of high-density polyethylene

机译：由碳黑和高密度聚乙烯的高取向片状网络组成的高度变形的压阻膜

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摘要

The electrical resistance change of highly extensible films consisting of a network of carbon blacks in high-density polyethylene, with different regularity of stacked lamellae, is investigated. The film was fabricated by melt mixing of high-density polyethylene (HDPE) and carbon black (CB) via cast film extrusion. The morphology of particle network and regularity of stacked lamellae were affected by draw ratio during the cast film extrusion process. Testing has shown that the regularly stacked lamellar structure furnishes the film with hard elastic behavior and is conducive to the enhancement of the reversible level for the conductive film, which correlates with the piezoresistance response during the stretching and strain recovery. A rebound peak of R/R-0 is observed at the beginning of each loading cycle within the relatively low deformation level and a marked growth of the amplitude of R/R-0, as the number of cycle increases, is observed within the high deformation level for the film with highly regular stacked lamellae. It indicates that the regularity of stacked lamellar structure of matrix has a significant influence on the piezoresistivity of the film. The results could be utilized for the development of smart sensing and structural health monitoring of CB composite materials.
机译：研究了由高密度聚乙烯中的炭黑网络组成的高延展薄膜的电阻变化，该薄膜具有规则的堆叠薄片。该薄膜是通过流延薄膜挤出将高密度聚乙烯（HDPE）和炭黑（CB）熔融混合而制成的。流延膜挤出过程中的拉伸比会影响颗粒网络的形态和叠层薄片的规则性。测试表明，规则堆叠的层状结构为薄膜提供了坚硬的弹性性能，并有助于提高导电薄膜的可逆水平，这与拉伸和应变恢复过程中的压阻响应相关。在每个加载周期开始时，在相对较低的变形水平内观察到R / R-0的回弹峰，而在较高的加载周期内，随着周期数的增加，R / R-0的振幅明显增加。高度规则堆叠的薄膜的变形水平。这表明基质的层状叠层结构的规则性对薄膜的压阻有重要影响。研究结果可用于开发CB复合材料的智能传感和结构健康监测。

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