当前位置:首页>南昌>南昌航空大学/赣南科技学院:坚固、无氟光热超疏水防/除冰涂层

南昌航空大学/赣南科技学院:坚固、无氟光热超疏水防/除冰涂层

  • 2026-04-05 17:06:15
南昌航空大学/赣南科技学院:坚固、无氟光热超疏水防/除冰涂层

冰雪的堆积是一种自然现象,可能会在航空、电力传输、风力发电以及农业生产等多个领域引发严重后果。例如,得克萨斯州发生的灾难性暴风雪严重影响了人身安全和经济稳定。因此,制定安全有效的除冰策略至关重要。传统的主动除冰方法,如机械刮除、电热加热和化学液体,被广泛使用,但因其高能耗、环境污染以及在偏远地区的适用性有限而备受诟病。

受荷叶启发,超疏水表面已成为一种有前景的被动防冰策略。这些表面利用微/纳米粗糙度来形成气泡,减少水滴与基材之间的接触面积,从而降低冰的粘附。然而,在恶劣的环境中(如高湿度或极低温度),仅靠被动表面可能会因霜的积聚或冰的机械联锁而单独失效。为了克服这一局限性,将主动光热除冰功能集成到超疏水涂层中已引起了广泛关注。碳纳米管(CNTs)因其优异的光热转换效率而闻名,在这一方面得到了广泛应用。例如,最近的研究成功地将碳纳米管与各种聚合物结合,制造出在阳光或近红外(NIR)照射下产生热量的涂层。

尽管取得了这些进展,但仍存在两个关键挑战。首先,要实现低表面能,大多数现有的光热超疏水涂层严重依赖含氟聚合物或氟硅烷。这些含氟化合物价格昂贵,由于其持久性和毒性,对人类健康和环境造成潜在风险。其次,构建坚固的分级结构十分困难;许多超疏水表面在受到磨损或摩擦时,其防冰功能容易丧失。因此,开发一种同时实现无氟环保、机械坚固性和高光热效率的涂层仍然是一个重大挑战。

近期,南昌航空大学杨海涛团队赣南科技学院彭慧璇团队采用喷涂技术,成功制备了一种具有高光热转换效率的坚固、无氟光热超疏水防/除冰涂层

以丙烯酸酯共聚物树脂(AR)作为粘合剂,将其与多壁碳纳米管(CNTs)和疏水二氧化硅(SiO2)纳米颗粒相结合,制得ACSHx复合涂层。

所制得复合涂层的微/纳米粗糙度为3.34 μm,水接触角为165°,滚动角为6.5°,表现出优异的超疏水性。通过被动防冰和主动光热除冰的协同作用,该涂层将水冻结时间延长了377秒,并将冰的粘附强度显著降低至36.9kPa。最重要的是,在近红外照射下,该涂层表面温度能够迅速升高至90℃,在户外环境中仅需8秒即可实现完全除冰。此外,该涂层还具有优异的机械耐久性

本研究为防冰应用提供了一种环保且持久的解决方案,在航空和电力传输领域具有广泛的应用潜力。

涂层制备过程

涂层制备过程。

数据来源与出处

相关研究成果以“Robust and fluorine-free: A photothermal superhydrophobic coating for synergistic passive and active deicing”为标题发表在《Colloids and Surfaces A: Physicochemical and Engineering Aspects》上。

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  1. CONNECT:[ UseTime:0.000906s ] mysql:host=127.0.0.1;port=3306;dbname=aa460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.002519s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000992s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.013096s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001550s ]
  6. SELECT * FROM `set` [ RunTime:0.000647s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001548s ]
  8. SELECT * FROM `article` WHERE `id` = 483601 LIMIT 1 [ RunTime:0.038330s ]
  9. UPDATE `article` SET `lasttime` = 1775545847 WHERE `id` = 483601 [ RunTime:0.005016s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000646s ]
  11. SELECT * FROM `article` WHERE `id` < 483601 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001122s ]
  12. SELECT * FROM `article` WHERE `id` > 483601 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001050s ]
  13. SELECT * FROM `article` WHERE `id` < 483601 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.094668s ]
  14. SELECT * FROM `article` WHERE `id` < 483601 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.057038s ]
  15. SELECT * FROM `article` WHERE `id` < 483601 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.077883s ]
0.464016s