痕量灌溉中聚四氟乙烯膜抗污染性能实验研究
发布时间：2018-12-15 07:03
【摘要】：痕量灌溉是近几年来发展的一种全新的基于膜过滤技术的节水灌溉方法,其核心过滤元件聚四氟乙烯膜具有优异的机械性能、耐老化性能、化学稳定性能等优势,但其本身的疏水性容易导致过滤膜发生污染堵塞,使得痕量灌溉系统不能长期稳定运行。以聚四氟乙烯膜为研究对象,对其进行多巴胺亲水性改性和抗腐殖酸溶液污染性能实验研究。研究结果表明,改性后的复合膜较未改性的初始膜具有较好的亲水性;多巴胺聚合物牢固地吸附在复合膜表面;复合膜较初始膜的抗污染性能大大的改善。这将在极大程度上提高聚四氟乙烯膜的寿命和痕量灌溉系统的运行可靠性,为痕量灌溉技术的发展与应用提供了一定的技术指导。
[Abstract]:Trace irrigation is a new water-saving irrigation method based on membrane filtration technology developed in recent years. The core filtration element of PTFE membrane has excellent mechanical properties, aging resistance, chemical stability and other advantages. However, its hydrophobicity can lead to fouling and blockage of filtration membrane, which makes trace irrigation system unable to operate stably for a long time. The hydrophilic modification of polytetrafluoroethylene (PTFE) membrane and its resistance to humic acid solution pollution were studied. The results show that the modified composite membrane has better hydrophilicity than the unmodified initial membrane, the dopamine polymer is firmly adsorbed on the surface of the composite membrane, and the antifouling performance of the composite membrane is greatly improved compared with the initial membrane. This will greatly improve the life of PTFE film and the reliability of trace irrigation system, and provide some technical guidance for the development and application of trace irrigation technology.
【作者单位】： 文华学院机械与电气工程学部;华中科技大学材料科学与工程学院;
【基金】：科技部“十二五”科技支撑项目“东北四省区节水增粮高效灌溉技术研究与规模化示范”(2014BAD12B00)
【分类号】：S275;TQ051.893
本文编号：2380190
[Abstract]:Trace irrigation is a new water-saving irrigation method based on membrane filtration technology developed in recent years. The core filtration element of PTFE membrane has excellent mechanical properties, aging resistance, chemical stability and other advantages. However, its hydrophobicity can lead to fouling and blockage of filtration membrane, which makes trace irrigation system unable to operate stably for a long time. The hydrophilic modification of polytetrafluoroethylene (PTFE) membrane and its resistance to humic acid solution pollution were studied. The results show that the modified composite membrane has better hydrophilicity than the unmodified initial membrane, the dopamine polymer is firmly adsorbed on the surface of the composite membrane, and the antifouling performance of the composite membrane is greatly improved compared with the initial membrane. This will greatly improve the life of PTFE film and the reliability of trace irrigation system, and provide some technical guidance for the development and application of trace irrigation technology.
【作者单位】： 文华学院机械与电气工程学部;华中科技大学材料科学与工程学院;
【基金】：科技部“十二五”科技支撑项目“东北四省区节水增粮高效灌溉技术研究与规模化示范”(2014BAD12B00)
【分类号】：S275;TQ051.893
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