Effective Harmful Organism Management I: Fabrication of Facile and Robust Superhydrophobic Coating on Fabric

Advances in harmful organism management are highly demanding due to the toxicity of conventional coating approaches. Exploiting biomimetic superhydrophobicity could be a promising alternative on account of its cost-effectiveness and eco-friendliness. Here, we introduce a facile method to fabricate a robust superhydrophobic coating on a fabric substrate. This is achieved by sequentially spraying TiO2-epoxy resin nanocomposite material and fluorocarbon-silane modified SiO2 nanoparticles (FC-silane SiO2 NPs). The superhydrophobicity is attributed to the nanoparticles constituting a micro/nano hierarchical structure and the fluorocarbon of the modified SiO2 NPs lowering the surface energy. The epoxy resin embedded in the coating layer plays an important role in improving the robustness. The robustness of the superhydrophobic surface is demonstrated by measuring the water slide angle of surfaces that are subject to salty water at 500 rpm stirring condition for up to 13 days. This study focuses on ensuring the superhydrophobicity and robustness of the coating surface, which is preliminary work for the practical management of macrofoulers. Based on this work, we will perform practical harmful organism management in seawater as a second research subject.

A superrobust superhydrophobic PSU composite coating with self-cleaning properties, wear resistance and corrosion resistance

In this study, a superhydrophobic polysulfone (PSU) composite coating with a high water contact angle (WCA) of 159° and a low slide angle (SA) of only 3.5° has been fabricated through a simple thermal spraying method.

Repelling hot water from superhydrophobic surfaces based on carbon nanotubes

Superhydrophobic (SH) surfaces generally refer to those having a static water contact angle larger than 150° and a slide angle less than 10°, when both the surface and the water droplet are at room temperature.

Preliminary Experimental Study of Landslide Generated Waves in the Reservoir

Landslide generated waves in the reservoir were investigated in a three-dimension physical model based on the generalized Froude similarity. The tests included the following several influence factors: still water depth, still water width, landslide volume, landslide fall, slide angle. The waves generated process, as a complex solid-air-water phenomena, is composed of landslide entering water, the first wave generation, air-spray group forming, the second wave generation, wave run-up, wave propagation. Empirical equations base on most of experiments of the first maximum wave amplitude, the second maximum wave amplitude, the maximum wave run-up are described by multiple regressions of following dimensionless quantities: the relative slide Froude number, the relative landslide volume, the relative still water wide.

Design and Realize of a Universal High Precision Tester of Attack and Slide Angle Sensor

In order to solve the problems that measuring efficiency is low and measuring precision is low dependent on the maintenance man to test by manual work, a universal high precision tester of attack and slide angle sensor is proposed. The measuring efficiency has improved through the electronic spirit level that measures the attack and slide angle fast and automatically and reads data automatically. The universal property and expansibility is realized by the design method that the software and test data are designed separately. The tester in this paper is fit for the fast maintenance requirement of the attack and slide in the army, and this method has certain reference to construct other electronics tester.