超疏水

Abstract(#br)The superhydrophobic coatings with high gamma radiation stability were prepared by using epoxy/polydimethylsiloxane (EP/PDMS) resins as the matrix and silica nanoparticles as the fillers. The nanocomposite coatings exhibit superhydrophobicity with a high water contact angle (WCA) of 154° and a low sliding angle of 7°. With the amount of SiO 2 increasing from 0 to 30%, the surface shows the hierarchically structure gradually and its roughness raised from 4\u003cce:hsp sp=\"0.25\"/\u003enm to 278\u003cce:hsp sp=\"0.25\"/\u003enm.

Abstract(#br)The further advance of membrane distillation (MD) is hampered due to inadequate membrane durability challenged by wetting-induced performance deterioration. The current study presents a novel approach to fabrication of superhydrophobic polyvinylidene fluoride (PVDF) membranes via construction of hierarchical textures on membrane surfaces based on a nanocasting strategy. Two types of PVDF membranes with different surface textures were prepared, separately using a stainless-steel mesh (SSM) or its negative polydimethylsiloxane (PDMS) template as a fabrication substrate.

Abstract(#br)Despite of the extensive effort made to construct a superhydrophobic surface in labs, achieving a short processing time and via a sustainable production route remains a challenge for practical applications. Here, with tetrahydrofuran and n-hexane as co-solvent, we demonstrate that roughness can be induced on polydimethylsiloxane (PDMS) coatings to achieve superhydrophobic coatings on different types of substrates including woven fabrics, non-woven fabrics, and melamine sponge.

Abstract(#br)Icephobicity is intrinsically affected by rough asperities and the surface voids provide anchoring points for the ice. The anchor of ice is likely to form on the surface under high humidity conditions. In-situ water condensation and icing observation were conducted to understand water condensation and ice retracting patterns in controlled humidity, pressure and temperature conditions.

Abstract(#br)The practical applications of protein-based materials have so far been limited due to their natural hydrophilicity and high sensitivity to moisture. In this study, we developed a facile surface coating technique to prepare superamphiphobic soy protein isolate (SSPI) films materials. First, fluorinated superamphiphobic HNTs/SiO 2 particles (HS-SH-F) were prepared through simple and efficient thiol-ene click reaction. Then, HS-SH-F particles were sprayed onto SPI films while Polydimethylsiloxane (PDMS) as a medium adhesive layer.

Abstract(#br)Surface wettability of gas diffusion media (GDM) is one of the key issues related to the water management in fuel cells. In this study, a facile coating approach of combining carbon black and polydimethylsiloxane (PDMS) is developed to fabricate the gas diffusion layer (GDL) with super hydrophobic and hierarchical surfaces. Due to the Wenzel and Cassie's effect, the fabricated GDL shows the average contact angle as high as 158° and the roll angle less than 5°.

Abstract(#br)Oil spill accidents and industrial oily wastewater are threatening all living species in the ecological system. Development of materials with special wettability for oil/water separation has been the subject of many researches. Herein, superhydrophobic and superoelophilic nanocomposite coatings, based on titanium dioxide (TiO 2 ) nanoparticles and polydimethylsiloxane (PDMS), were applied on metal meshes with different pore sizes (25 and 100 μm). Morphological analysis revealed that adding PDMS, as a binder, significantly changes the surface structure of the coatings.

摘要\n导电聚合物复合材料( CPC )因其重量轻、柔韧性好成为可穿戴应变传感器的候选材料，然而成本高、响应度低和耐腐蚀性差严重制约了其实际应用。本研究以市售橡胶带( RB )和低成本炭黑纳米粒子( CBNPs )为聚合物基体和导电纳米填料制备可穿戴应变传感器用超疏水CPC。CBNPs通过超声作用均匀地分布在肿胀的RB表面。然后，将得到的具有粗糙表面的RB / CBNPs复合材料用聚二甲基硅氧烷( PDMS )进行改性，不仅可以赋予复合材料超疏水性能，而且在很大程度上改善了RB与CBNPs的界面黏附性。所制备的RB / CBNPs / PDMS超疏水复合材料具有优异的拒水和防腐性能，即使在循环表面磨损试验后仍保持其超疏水性能，表现出优异的耐久性。此外，RB / CBNPs / PDMS应变传感器具有优异的拉伸性能，断裂伸长率为980 %，高灵敏度，规整因子为242.6 ( ε = 38.8 % ~ 71.4 % )，循环拉伸-释放试验重复性好，可用于检测全身运动。

Abstract(#br)A facile and durable biomimetic slippery anti-icing coating was prepared by infusing nontoxic and inexpensive lubricating silicone oil into superhydrophobic dual-scale micro/nano-structured (MNS) aluminum surfaces. Superhydrophobic surfaces were fabricated via the combination of simple chemical etching and anodization, followed by surface modification with poly(dimethylsiloxane) (PDMS). Compared to superhydrophobic coatings, silicone oil-infused polydimethylsiloxane (SOIP) coating displays a low ice-adhesion strength of 22 ± 5 kPa on the structured surface.

摘要( # br )本研究利用普通烟气废弃物粉煤灰( FA )有效制备多功能超疏水表面。FA首先被TiO2壳层包复，通过电荷吸附形成核( FA ) -壳( TiO2 )结构。然后将FA-TiO2接枝到聚二甲基硅氧烷( PDMS )分子上，形成具有超疏水性能的FA-TiO2 - PDMS粒子。PDMS分子通过共价键牢固地接枝在TiO2壳层上，从而赋予粒子一系列持久的性能。将超疏水的FA-TiO2 - PDMS粒子与PDMS混合，可形成均匀的涂层溶液，涂复到织物上，得到超疏水表面。由此得到的超疏水织物表现出了“莲花效应”和优异的自清洁能力。它还表现出优异的光催化能力，可反复光催化降解各种油脂和染料。此外，涂层织物表现出持久稳定的超疏水性能，能够承受反复的磨耗处理、使用胶带回收剥落试验、长时间的沸水浸泡和循环溶剂浸泡。此外，经过简单的热处理后，即使经过多次等离子体处理或浸泡在强碱/酸溶液中8 h，表面仍表现出较强的自愈合超疏水性能。超疏水织物还具有自淬灭耐火性能，能够高效分离各种油水混合物。