浸涂

High-performance multiple-layer PIM composite hollow fiber membranes for gas separation

ty10086 提交于 周四, 08/26/2021 - 13:15
Abstract(#br)The invention of polymers of intrinsic microporosity (PIMs) has opened up great opportunities for the developments of high-performance composite membranes which possess both high gas permeance and selectivity. However, it still remains challenging to translate such PIM materials into PIM-related composite membranes with characteristics of high permeance and selectivity.

Self Assembled Patterns of Ag Using Hydrophobic and Hydrophilic Surface Characteristics of Glass

ty10086 提交于 周四, 08/26/2021 - 12:49
Self Assembled Patterns of Ag Using Hydrophobic and Hydrophilic Surface Characteristics of GlassMicro contact printing;Ag solution;Dip-coating;PDMS;OTS;Recently, the interest in lithography without photo exposure has been increased compare to the conventional photolithography in nano meter and micrometer size patterning area. We studied a self aligned dipping of Ag solution through micro contact printing (${\\mu}-CP$) with octadecyltrichlorosilane (OTS) treated polydimethylsiloxane (PDMS) soft mold. The OTS monolayer on the patterned PDMS was formed by dipping it into OTS solution.

纤维种类和纱线直径对超疏水性能、自清洁性能和耐水雾性能的影响

ty10086 提交于 周三, 08/25/2021 - 15:55
在本研究中,我们证明了微/微分级结构足以利用聚二甲基硅氧烷( PDMS )浸涂实现超疏水表面。进一步考察了纤维种类和纱线直径对超疏水性能和耐水雾性能的影响。采用两种纤维(短纤维和长丝)和三种纱线直径( 177D、314D和475D )的涤纶织物。研究了表面性质和化学成分的变化。测量了超疏水表面的静态接触角和脱落角,并进行了自清洁试验。还测试了喷水驱避性,以及水蒸气透过率和透气性。PDMS涂层短纤维织物表现出比PDMS涂层长丝织物更好的超疏水和疏油性,而长丝织物表现出良好的自清洁性能和更高的拒水喷淋水平。当纱线直径增大时,织物需要更高的PDMS浓度和更长的涂层时间来均匀涂层。涂层后水蒸气透过率和透气性没有明显变化。因此,与其他化学方法制备的超疏水纺织品相比,采用本研究的简单方法制备的超疏水微/微分级织物更具有实用性和大规模生产的潜力。

纤维种类和纱线直径对超疏水性能、自清洁性能和耐水雾性能的影响。

ty10086 提交于 周三, 08/25/2021 - 15:55
在本研究中,我们证明了微/微分级结构足以利用聚二甲基硅氧烷( PDMS )浸涂实现超疏水表面。进一步考察了纤维种类和纱线直径对超疏水性能和耐水雾性能的影响。采用两种纤维(短纤维和长丝)和三种纱线直径( 177D、314D和475D )的涤纶织物。研究了表面性质和化学成分的变化。测量了超疏水表面的静态接触角和脱落角,并进行了自清洁试验。还测试了喷水驱避性,以及水蒸气透过率和透气性。PDMS涂层短纤维织物表现出比PDMS涂层长丝织物更好的超疏水和疏油性,而长丝织物表现出良好的自清洁性能和更高的拒水喷淋水平。当纱线直径增大时,织物需要更高的PDMS浓度和更长的涂层时间来均匀涂层。涂层后水蒸气透过率和透气性没有明显变化。因此,与其他化学方法制备的超疏水纺织品相比,采用本研究的简单方法制备的超疏水微/微分级织物更具有实用性和大规模生产的潜力。