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PREPARATION OF ELECTROSPRAYED MICROPOROUS MEMBRANES

机译：电喷雾微孔膜的制备

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Polytetrafluoroethylene (PTFE) which is also called as "TEFLON" is a synthetic fluoropolymer of tetrafluoroethylene that has wide applications due to its differentiating properties. In this study, different PTFE dispersions for preparation of polytetrafluoroethylene mesoporous active membranes doped by basalt and carbon particles which were created in high voltage electrostatic field has been studied. The adjusting of process parameters of common electrospinning system (Nanospider) for preparation of membranes with tunable porosity created by nanofibrous assembly (electrospinning) and interconnected particles (electrospraying) has also been investigated. The nanoparticles based on milled basalt and carbon was used for activation and achieving of special effects. Superhydrophobic Polytetrafluoroethylene (PTFE) microporous membranes with different surface structures were obtained by controlling operating parameters in the electrospinning process. The diameters and microstructure of the PTFE microporous membrane were characterized by scanning electron microscopy. The contact angles on the microporous membranes were evaluated by static micro-drop observation, and a modified Yang equation was applied to analyze the contact angles. The superhydrophobic PTFE microporous membranes were also tested for thermal properties. As a result of this study, optimized PTFE blend solutions were identified. The results also revealed that the specific surface area was the key factor affecting the contact angles. The thermal properties revealed that thermal conductivity was higher and thermal resistance was lower for carbon and basalt doped membranes.
机译：聚四氟乙烯（PTFE），其也称为“TEFLON”是具有广泛的应用四氟乙烯的合成含氟聚合物由于其分化性质。在这项研究中，用于制备聚四氟乙烯介孔活性膜的不同PTFE分散掺杂由分别在高压静电场创建已经研究玄武岩和碳颗粒。的共同电纺丝系统（纳米纺纱）的工艺参数对于制备膜与由纳米纤维组件（电纺丝）创建的可调孔隙率和相互连接的颗粒（电喷雾）调整也进行了研究。用于激活根据已研磨的玄武岩和碳纳米粒子和特效实现。超疏水的聚四氟乙烯（PTFE）具有不同的表面结构的微孔膜是由控制电纺丝工艺操作参数获得。通过扫描电子显微镜的PTFE微孔膜的直径和显微组织进行了表征。的接触角在微孔膜由静微滴观察来评价，和改性的羊方程应用于分析的接触角。超疏水PTFE微孔膜还测试了热性能。作为这项研究的结果，优化PTFE混合解决方案进行了鉴定。研究结果还显示，比表面积是影响接触角的关键因素。热性质表明，热导率较高，为碳热阻较低，玄武岩掺杂膜。

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