Shear modulus regulated porous functional PDMS coatings with superior anti-icing and lubricating properties

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-08-25 DOI:10.1016/j.porgcoat.2025.109605

Zekai Zhang , Chaojie Shen , Jun Huang , Peipei Zhang , Xiaolai Zhang , Xin Cui , Zhenfeng Hu , Chunhao Lu , Lei Xie , Ningji Gong

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引用次数: 0

Abstract

The strong ice adhesion of commercially available polydimethylsiloxane (PDMS) hinders its anti-icing and ice-phobic applications. In this study, a porous- vinyl-terminated PDMS (PV-PDMS) coating that is capable of absorbing lubricating liquids has been developed through shear modulus adjustment and salt-templating, achieving comprehensive optimization of the mechanical property, lubricity and anti-icing performance. The sponge-like PV-PDMS can fully recover even after being compressed by 90 %. The modulation of the shear modulus and the introduction of a sponge-like microstructure decrease the τ_ice to 19.6 ± 4.6 kPa. Moreover, the ice formation time of water droplets on PV-PDMS surface reaches 1100 s, which is 6.4 times longer compared to that of the conventional PDMS. Importantly, by swelling and absorbing dimethylsilicone oil and ionic liquids as lubricants, the τ_ice is further reduced to 4.8 ± 1.3 kPa. Simultaneously, the COF on the coating surface is markedly decreased to 0.30, representing a 95.5 % reduction compared to traditional PDMS. Overall, this study demonstrates that tuning the shear modulus as well as the development of liquid infused PV-PDMS coatings can enhance both the anti-icing and lubricating properties.

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剪切模量调节的多孔功能PDMS涂层具有优异的防冰和润滑性能

商用聚二甲基硅氧烷（PDMS）的强冰粘附性阻碍了其抗冰和疏冰应用。本研究通过剪切模量调整和盐模板，制备了一种能够吸收润滑液体的多孔端乙烯基PDMS （PV-PDMS）涂层，实现了力学性能、润滑性能和防冰性能的综合优化。海绵状PV-PDMS在被压缩90%后仍能完全恢复。剪切模量的调整和海绵状微观结构的引入使τ冰减小到19.6±4.6 kPa。此外，水滴在PV-PDMS表面的成冰时间达到1100 s，是传统PDMS的6.4倍。重要的是，通过膨胀和吸收二甲基硅油和离子液体作为润滑剂，τ冰进一步降低到4.8±1.3 kPa。同时，涂层表面的COF显著降低至0.30，与传统的PDMS相比降低了95.5%。总的来说，本研究表明，调整剪切模量以及开发液体注入的PV-PDMS涂层可以提高防冰和润滑性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.