Han Xinting, Peng Junyan, Jiang Shaohua, Xiong Jian, Song Yu, Gong Xiao
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
Langmuir. 2020 Sep 22;36(37):11044-11053. doi: 10.1021/acs.langmuir.0c01923. Epub 2020 Sep 11.
Good mechanical and chemical stabilities are the key factors for the wide application of superhydrophobic surfaces. In this work, we first prepared raspberry-like hollow structured SnO nanoparticles using a simple hydrothermal method, followed by an annealing step. Then, the intrinsic raspberry-like hollow SnO nanoparticles were combined with hydrophilic SiO nanoparticles to construct rough surfaces with suitable hierarchical structures, and 1,1,2,2-perfluorodecyltriethoxysilane (FAS-17) was used as a hydrophobic modifier of SnO, while epoxy resin was used as an adhesive to prepare a superamphiphobic coating with good stability and durability. Such a coating can be applied on various substrates using a simple spray-coating or drop-coating method. The water contact angle and diiodomethane contact angle of the coating could reach up to ∼165 and ∼151°, respectively. After various chemical and mechanical stability tests including hot water treatment, salt water corrosion, strong adhesive tape peeling, and kneading, the coatings still remained amphiphobic. The facile fabrication of the robust superhydrophobic coating has great potential for applications in real life and industrial production.
良好的机械稳定性和化学稳定性是超疏水表面广泛应用的关键因素。在本工作中，我们首先采用简单的水热法制备了树莓状中空结构的SnO纳米颗粒，随后进行退火步骤。然后，将本征的树莓状中空SnO纳米颗粒与亲水性SiO纳米颗粒结合，构建具有合适分级结构的粗糙表面，使用1,1,2,2-全氟癸基三乙氧基硅烷（FAS-17）作为SnO的疏水改性剂，同时使用环氧树脂作为粘合剂，制备出具有良好稳定性和耐久性的超双疏涂层。这种涂层可以通过简单的喷涂或滴涂方法应用于各种基材上。该涂层的水接触角和二碘甲烷接触角分别可达约165°和约151°。经过包括热水处理、盐水腐蚀、强力胶带剥离和揉捏在内的各种化学和机械稳定性测试后，涂层仍保持双疏性。这种坚固的超疏水涂层的简便制备方法在实际生活和工业生产中具有巨大的应用潜力。
