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在纤维素绝缘聚合物上制备纳米结构聚四氟乙烯（PTFE）功能膜及其对击穿电压和疏水性的影响。

Preparation Nano-Structure Polytetrafluoroethylene (PTFE) Functional Film on the Cellulose Insulation Polymer and Its Effect on the Breakdown Voltage and Hydrophobicity Properties.

作者信息

Hao Jian, Liu Cong, Li Yanqing, Liao Ruijin, Liao Qiang, Tang Chao

机构信息

The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China.

Postdoctoral Station of Power Engineering and Engineering Thermophysics, Chongqing University, Chongqing 400044, China.

出版信息

Materials (Basel). 2018 May 21;11(5):851. doi: 10.3390/ma11050851.

DOI:10.3390/ma11050851
PMID:29883376
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5978228/
Abstract

Cellulose insulation polymer is an important component of oil-paper insulation, which is widely used in power transformer. The weight of the cellulose insulation polymer materials is as high as tens of tons in the larger converter transformer. Excellent performance of oil-paper insulation is very important for ensuring the safe operation of larger converter transformer. An effective way to improve the insulation and the physicochemical property of the oil impregnated insulation pressboard/paper is currently a popular research topic. In this paper, the polytetrafluoroethylene (PTFE) functional film was coated on the cellulose insulation pressboard by radio frequency (RF) magnetron sputtering to improve its breakdown voltage and the hydrophobicity properties. X-ray photoelectron spectroscopy (XPS) results show that the nano-structure PTFE functional film was successfully fabricated on the cellulose insulation pressboard surface. The scanning electron microscopy (SEM) and X-ray diffraction (XRD) present that the nanoscale size PTFE particles were attached to the pressboard surface and it exists in the amorphous form. Atomic force microscopy (AFM) shows that the sputtered pressboard surface is still rough. The rough PTFE functional film and the reduction of the hydrophilic hydroxyl of the surface due to the shielding effect of PTFE improve the breakdown and the hydrophobicity properties of the cellulose insulation pressboard obviously. This paper provides an innovative way to improve the performance of the cellulose insulation polymer.

摘要

纤维素绝缘聚合物是油纸绝缘的重要组成部分，广泛应用于电力变压器中。在大型换流变压器中，纤维素绝缘聚合物材料的重量高达数十吨。优异的油纸绝缘性能对于确保大型换流变压器的安全运行非常重要。目前，提高油浸绝缘纸板/纸的绝缘性能和物理化学性能的有效方法是一个热门的研究课题。在本文中，通过射频（RF）磁控溅射在纤维素绝缘纸板上涂覆聚四氟乙烯（PTFE）功能膜，以提高其击穿电压和疏水性。X射线光电子能谱（XPS）结果表明，在纤维素绝缘纸板表面成功制备了纳米结构的PTFE功能膜。扫描电子显微镜（SEM）和X射线衍射（XRD）表明，纳米级尺寸的PTFE颗粒附着在纸板表面，且以非晶形式存在。原子力显微镜（AFM）显示，溅射后的纸板表面仍然粗糙。粗糙的PTFE功能膜以及由于PTFE的屏蔽作用导致表面亲水性羟基的减少，明显提高了纤维素绝缘纸板的击穿性能和疏水性。本文提供了一种提高纤维素绝缘聚合物性能的创新方法。

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Stable polytetrafluoroethylene superhydrophobic surface with lotus-leaf structure.具有荷叶结构的稳定聚四氟乙烯超疏水表面
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Polymer Processing: Modeling and Correlations Finalized to Tailoring Plastic Part Morphology and Properties.
聚合物加工：为定制塑料部件形态和性能而最终确定的建模与关联
Materials (Basel). 2019 Apr 14;12(8):1217. doi: 10.3390/ma12081217.