材料科学与工程学报2017，Vol.35Issue(2)：195-202,8.DOI:10.14136/j.cnki.issn 1673-2812.2017.02.006
石蜡断面超疏水机理的探究及其在油水分离方面的应用
Superhydrophobicity of Paraffin Fracture Surfaces and the Application in Fabricating Automatic Oil-Water Separation System
摘要
Abstract
Superhydrophobicity of the paraffin fracture surface was discovered,the water contact angle (WCA) reaches 152.4 ±± 3°,higher than the 108 ± 3° of the outer surface.Superhydrophobic paraffin surfaces with a WCA of 162.4±3° and a sliding angle (SA) lower than 3°were fabricated by replicating the morphology of the fracture surface with a sheet of copper mesh.A device with a separating speed of 0.67mL/s for continuous oil-water separation was designed.The morphology of the obtained surface was investigated by scanning electron microscope (SEM).Differential scanning calorimetry (DSC),X-ray diffraction (XRD) and polarizing microscopy (POM)tested the narrow melting temperature range and high crystallinity of paraffin.Results show that the main cause for the superhydrophobicity of the fracture surface is the surface roughness.High roughness of paraffin fracture surface is caused by the continuous crystalline region and the scattered crystalline regions.When being fractured,the crystalline regions function as the concentration points and micro-size "fillers",leading to a rough morphology.关键词
超疏水/石蜡/断面/结晶相/油水分离Key words
superhydrophobicity/paraffin/fracture surface/crystallization region/oil-water separation分类
机械制造引用本文复制引用
刘滨,徐都,邱文莲,沈烈..石蜡断面超疏水机理的探究及其在油水分离方面的应用[J].材料科学与工程学报,2017,35(2):195-202,8.基金项目
This work was financial supported by the Zhejiang Provincial Natural Science Foundation of China (LY13E030001) （LY13E030001）
