共查询到19条相似文献,搜索用时 140 毫秒
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研究了聚四氟乙烯/玻璃纤维胶带作为脱模介质对玻璃钢表面的影响以及对风电叶片制造成本的影响。从接触角、拉剪性能和对不同涂层的附着力这三大方面,对比了分别使用聚四氟乙烯/玻璃纤维胶带、尼龙脱模布、光滑和砂纸打磨这四种方式获得的玻璃钢表面性能。研究结果表明:使用聚四氟乙烯/玻璃纤维胶带获得的玻璃钢表面润湿性一般;玻璃钢使用聚四氟乙烯/玻璃纤维胶带脱模可获得与使用脱模布相当的拉剪性能;使用聚四氟乙烯/玻璃纤维胶带获得的玻璃钢表面涂装附着力与其他方式持平。经济性分析表明国产聚四氟乙烯/玻璃纤维胶带在模具上的应用有望降低风电叶片的制造成本。 相似文献
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以鳞片状微粉石墨在冷却塔玻璃钢风机叶片的表面胶衣树脂中作为功能填料,选用合理的粒度、配方、掺杂工艺,使表面胶衣树脂的力学、摩擦性能、电性能等方面性能得到提升,进一步提高整个玻璃钢风机叶片的性能。 相似文献
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在风电叶片的涂层施工中,为了提高涂层使用寿命及抗冰冻、自清洁性能,一般在滚涂聚氨酯底漆、弹性聚氨酯中间漆后喷涂一层氟碳涂料。因风电叶片体积大,施工时间长,故漆膜中颗粒难以避免。通过改善喷涂环境,改变施工工艺后有效解决了漆膜中颗粒问题。 相似文献
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玻璃纤维增强复合材料工程化应用进展 总被引:1,自引:0,他引:1
介绍了玻璃纤维增强树脂基复合材料的特点及成型方法,并介绍了玻璃纤维增强复合材料用于风电叶片、风电联轴器、复合材料板弹簧、聚氨酯轨枕以及多功能履带板的工程化应用研究实例。展望了玻璃纤维增强复合材料在轨道交通、汽车工业等领域的工程化应用前景及发展方向。 相似文献
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Sand erosion may cause severe damage of blades in wind turbine and helicopter blades as well as many surface components of airplanes. In this study, thin nanopapers made of carbon nanofibers (CNFs) are used to enhance the resistance of solid particle erosion of glass fiber (GF)/wind epoxy composites. Finite element computer simulations are used to elucidate the underlying mechanisms. The much higher particle erosion resistance of nanopapers compared to GF‐reinforced epoxy composites is attributed to the high strength of CNFs and their nanoscale structure. The excellent performance in particle erosion resistance makes the CNF‐based nanopaper a prospective protective coating material for the turbine blades in the wind energy industry. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献
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分析了当今下游复合材料工业的发展对玻纤增强基材发展的需要。重点介绍了风电叶片用玻纤纱、技术织物、复合织物、预浸渍制品、预成型增强体等各类玻纤增强基材以及增强热塑性塑料用的短切纤维、混合纱、LFT、GMT、GMT-D、LFT—D、增强热塑性片材等各类玻纤增强基材。并为玻纤增强基材如何促进这两类复合材料产品的发展提出建议。 相似文献
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《国际智能与纳米材料杂志》2013,4(3):120-133
In this study, multifunctional carbon nanofiber (CNF) paper-based nanocomposite coating was developed for wind turbine blades. The importance of vibration damping in relation to structural stability, dynamic response, position control, and durability of wind turbine blades cannot be underestimated. The vibration damping properties of the nanocomposite blades were significantly improved and the damping ratio of the nanocomposite increased by 300% compared to the baseline composite. In addition, the CNF paper-based composite exhibited good impact-friction resistance, with a wear rate as low as 1.78×10?4mm3/Nm. The nanocomposite also shows the potential to improve the blockage of water from entering the nanocomposite, being a superhydrophobic material, with a contact angle higher than 160.0°, which could improve the longevity of a wind turbine blade. Overall, multifunctional nanocomposite coating material shows great promise for usage with wind turbine blades, owing to its excellent damping properties, great friction resistance, and superhydrophobicity. 相似文献
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主要阐述了目前风力发电机叶片中主要采用的复合材料,即玻璃纤维、环氧树脂、胶粘剂和PVC芯材;同时对不同材料在叶片中所占的比重和成本比例进行了分析和研究。提出了未来风机叶片主体材料的研发任重道远。 相似文献
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Roll‐to‐roll printed carbon nanotubes on textile substrates as a heating layer in fiber‐reinforced epoxy composites 下载免费PDF全文
Thomas Fischer Julia Rühling Nora Wetzold Tino Zillger Thomas Weissbach Thomas Göschel Matthias Würfel Arved Hübler Lothar Kroll 《应用聚合物科学杂志》2018,135(10)
The performance of wind turbines suffers from icing in regions with extreme climate. One approach is to incorporate heating elements into the most susceptible areas of the wind turbine blade as protection against icing and for de‐icing. Cost‐efficient and reproducible fabrication, as well as easy integration is important due to the large area of wind turbine blades. In this work, multi‐walled carbon nanotubes are applied on a 50% poly(ethylene terephthalate) and 50% polyamide non‐woven textile substrate by rotary‐screen printing. The printed layers function as resistive heating elements in a fiber‐reinforced composite. The heating areas are provided with flexographic or screen inline‐printed silver‐electrodes and can be integrated by means of vacuum infusion into a glass fiber‐reinforced epoxy composite laminate. These laminates, which are connected to an intelligent electrical control system, are suitable for melting ice on the surface of components or for preventing the formation of ice. The first promising experiments on heating structures in a rotor blade of a wind turbine at laboratory scale (2 m length) are the basis of studies on intelligent electrical control of heating structures and their behavior at different temperatures. The heating elements were able to melt a 3–4 mm thick ice layer within 25 min in a climate chamber at ?5 °C. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 45950. 相似文献
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本文针对两种自制的风电叶片用真空灌注型环氧树脂体系EP-1和EP-2,研究了树脂的工艺性和力学性能,并选取单轴向和三轴向玻璃纤维织物,采用真空灌注工艺制备了复合材料层板,考察了复合材料在室温和高低温下的力学性能。结果表明,EP-2体系浸润性、流动性和韧性更好,但强度、模量和耐热温度略低;常温及-45℃下两种树脂基复合材料的力学性能相近,纤维/树脂界面粘结较强;50℃环境下,复合材料的压缩强度降低,受玻璃化转变温度偏低的影响,EP-2复合材料压缩性能降低更为明显;两种环氧树脂的工艺性和力学性能优异,与纤维匹配性好,满足风电叶片对树脂的性能要求。 相似文献