Multifunctional graphene/polyimide composite coating with electrothermal and superhydrophobic properties for wind turbine blade anti-icing

IF 5.4 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-10-06 DOI:10.1016/j.colsurfa.2025.138581

Long Chen , Qian Yang , Le Zhang , Yi Wang , Zhichen Lin

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引用次数: 0

Abstract

A graphene/polyimide (GE/PI) multilayer composite coating coated with organic silicon, specifically designed to achieve dual electrothermal and hydrophobic functions was proposed. By optimizing the dispersion of GE in the PI matrix (3.0–10.0 wt%) and adding a hydrophobic silicone layer, the coating achieves rapid Joule heating (reaching 128℃ within 60 ss at 4 wt% GE) while maintaining a contact angle exceeding 110°. Systematic experiments showed that the coating resistance decreases exponentially with increasing GE content, while thicker coatings (44.75–68.60 μm) exhibited lower steady-state temperatures due to enhanced thermal conduction pathways. Anti-icing tests under −15℃ humid conditions indicated that the coating surface shows minimal ice formation after 120 min, attributed to the synergistic effects of hydrophobicity and thermal regulation. De-icing experiments showed that ice (18 mm × 23 mm ice column) could be completely removed within 360 ss under 220 V/105 mA conditions, a 40 % improvement over traditional methods. Cyclic durability tests confirmed that anti-icing performance remained stable after 50 cycles, with ice coverage below 1 %. This study provides an energy-efficient and durable solution for protecting wind turbine blades and offers insights into the GE arrangement and interface engineering of multifunctional coatings.

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具有电热和超疏水性能的多功能石墨烯/聚酰亚胺复合涂层用于风力涡轮机叶片防冰

提出了一种以有机硅为包覆层的石墨烯/聚酰亚胺（GE/PI）多层复合涂层，可实现电热和疏水双重功能。通过优化GE在PI基体中的分散（3.0-10.0 wt%），并添加疏水硅树脂层，涂层实现了快速焦耳加热（在4 wt% GE下60秒内达到128℃），同时保持了超过110°的接触角。系统实验表明，随着GE含量的增加，涂层电阻呈指数级下降，而较厚的涂层（44.75 ~ 68.60 μm）由于热传导途径的增强，其稳态温度较低。在−15℃潮湿条件下的防冰试验表明，涂层表面在120 min后形成最小的冰，这是由于疏水性和热调节的协同作用。除冰实验表明，在220 V/105 mA条件下，可以在360秒内完全除冰（18 mm × 23 mm冰柱），比传统方法提高了40 %。循环耐久性试验证实，在50次循环后，抗冰性能保持稳定，冰覆盖率低于1 %。这项研究为保护风力涡轮机叶片提供了一种节能耐用的解决方案，并为通用电气的布局和多功能涂层的界面工程提供了见解。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.