Lubricating organohydrogel with ultrahigh durability and super-weatherability enabled by molecular chains aligned strategy for drag-reduction coating

Lubricating hydrogel (LHO) is regarded as one of the promising candidate materials for protective coating desirable to provide drag-reduction and energy-saving functions. However, the state-of-the-art LHOs have poor durability in harsh conditions due to mechanical strength limitations and the absence of the weather resistance regime. Here we report a molecular chains aligned strategy driven by the methyl silicone oil submerging poly (oxy-1,4-butanediyl)(PEG)-polydimethylsiloxane (PDMS) matrix interior to significantly enhance the durability of lubricating organohydrogel while simultaneously making them tolerate harsh conditions. Via aligned statedriven effects, the methyl silicone oil could accelerate the aligned arrangement of the PEG-PDMS molecular chains via interface phase exclusiveness, which can greatly facilitate the mechanical toughness of lubricating organohydrogel, leading to the remarkable longevity and wear stability. Moreovre, the extraordinary weatherfastness of lubricating organohydrogel was achieved by combining the intrinsic constant feature (featuring a high boiling point and low freezing point) of methyl silicone oil and subzero temperature inhibition-freeze effect of hydrogen bonds. The lubricating organohydrogel shows high longevity and wear stability (over 18,000 friction cycles), excellent drag-reduction performance (friction coefficient is as low as 0.08), and superior toleratedextreme environment capacity (withstand - 40 degrees to 150 degrees C temperature). As a drag-reduction coating, the lubricating organohydrogel demonstrates extraordinary wear-protection and anti-icing performance. These observations indicate fresh friction-reduction and energy-saving engineering materials.

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周峰/裴小维

联系电话:18919198811

电子邮箱:zhouf@licp.cas.cn

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周峰/裴小维

联系电话:18919198811

电子邮箱:zhouf@licp.cas.cn

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周峰/裴小维

联系电话:18919198811

电子邮箱:zhouf@licp.cas.cn

成果名称:低表面能涂层

合作方式:技术开发

联 系 人:周峰/裴小维

联系电话:18919198811

电子邮箱:zhouf@licp.cas.cn

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