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首页> 美国卫生研究院文献>Polymers >Transparent Low Electrostatic Charge Films Based on Carbon Nanotubes and Polypropylene. Homopolymer Cast Films
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Transparent Low Electrostatic Charge Films Based on Carbon Nanotubes and Polypropylene. Homopolymer Cast Films

机译：基于碳纳米管和聚丙烯的透明低静电电荷薄膜。均聚物流延膜

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摘要

Use of multi-wall carbon nanotubes (MWCNTs) in external layers (A-layers) of ABA-trilayer polypropylene films was investigated, with the purpose of determining intrinsic and extrinsic factors that could lead to antistatic behavior of transparent films. The incorporation of 0.01, 0.1, and 1 wt % of MWCTNs in the A-layers was done by dilution through the masterbatch method. Masterbatches were fabricated using isotactic polypropylene (iPP) with different melt flow indexes 2.5, 34, and 1200 g/10 min, and using different ultrasound assist methods. It was found that films containing MWCNTs show surface electrical resistivity of 1012 and 1016 Ω/sq, regardless of the iPP melt flow index (MFI) and masterbatch fabrication method. However, electrostatic charge was found to depend upon the iPP MFI, the ultrasound assist method and MWCNT concentration. A percolation electron transport mechanism was determined most likely responsible for this behavior. Optical properties for films containing MWCNTs do not show significant differences compared to the reference film at MWCNT concentrations below 0.1 wt %. However, an enhancement in brightness was observed, and it was attributed to ordered iPP molecules wrapping the MWCNTs. Bright transparent films with low electrostatic charge were obtained even for MWCNTs concentrations as low as 0.01 wt %.
机译：研究了在ABA三层聚丙烯薄膜的外层（A层）中使用多壁碳纳米管（MWCNT）的目的，旨在确定可能导致透明薄膜抗静电行为的内在和外在因素。通过母料法稀释，在A层中掺入0.01、0.1和1重量％的MWCTN。使用具有不同熔体流动指数2.5、34和1200 g / 10 min的等规聚丙烯（iPP）以及不同的超声辅助方法制造母料。结果发现，与iPP熔体流动指数（MFI）和母料制备方法无关，含MWCNT的薄膜的表面电阻率为10 12 和10 16 Ω/ sq。但是，发现静电荷取决于iPP MFI，超声辅助方法和MWCNT浓度。确定了渗流电子传输机制，最有可能导致此行为。在低于0.1wt％的MWCNT浓度下，与参考膜相比，包含MWCNT的膜的光学性质没有显示出显着差异。然而，观察到亮度增强，这归因于包裹MWCNT的有序iPP分子。甚至对于低至0.01wt％的MWCNT，也获得了具有低静电荷的明亮的透明膜。

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