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以碳酸钙(CaCO3)颗粒层为模板,运用简单的热压和酸蚀刻相结合的方法制备聚合物超亲水/超疏水表面.首先在玻璃基底上均匀铺撒一层CaCO3颗粒,以此作为模板,通过热压线性低密度聚乙烯(LLDPE)使CaCO3颗粒均匀镶嵌在聚合物表面,获得了超亲水性质;进一步经酸蚀得到了具有微米和亚微米多孔结构的表面,其水滴静态接触角(WCA)可达(152.7±0.8)°,滚动角小于3°,具备超疏水性质.表面浸润性能和耐水压冲击性能研究表明该超疏水表面具有良好的稳定性和持久性.用同样工艺微模塑/酸蚀刻其它疏水性聚合物,得到类似结果.
Using calcium carbonate (CaCO3) particle layer as a template, a superhydrophilic / superhydrophobic polymer surface was prepared by a simple hot pressing and acid etching method. First, a layer of CaCO3 particles were spread on a glass substrate as a Template, hot pressing linear low-density polyethylene (LLDPE) CaCO3 particles uniformly embedded in the polymer surface, obtained super-hydrophilic properties; further by acid etching to obtain a surface with micron and sub-micron porous structure, the static contact of water droplets (WCA) up to (152.7 ± 0.8) °, roll angle less than 3 °, with superhydrophobic properties.The study of the surface wettability and water pressure resistance implies that the superhydrophobic surface has good stability and durability.With the same process Micro-molding / acid etching of other hydrophobic polymers yielded similar results.