摘要
以碳纤维材质的棉线为基底,通过聚苯胺(PANI)原位聚合和炭黑(CB)掺杂制备PANI/CB棉线,并以其为纬线,亲水棉线为经线,编织出平纹PANI/CB光热织物.设计一种织物型的蒸发器件,聚苯乙烯泡沫为隔热材料,棉线作供水通道,PANI/CB复合材料用于吸收太阳光.测试分析PANI/CB棉线的微观形貌和光热性能,以及PA-NI/CB 织物的吸光性和水蒸发性能.结果表明,经PANI/CB修饰的棉线,光热转换能力显著提高,且优于PANI棉线和CB棉线;PANI/CB织物具备出色的光吸收能力,吸光率达到98.70％;在1 kW/m2的光照强度下,蒸发器件的蒸发速率达2.21 kg/(m2·h),光热转换效率达92.24％;此外,该光热织物具有优异的耐盐性,可以实现长期且大规模地生产淡水.
Abstract
Using cotton yarn made of carbon fiber as the substrate,PANI/CB cotton yarn is prepared by in situ polymerization of polyaniline(PANI)and doping of carbon black(CB),and plain PANI/CB fabric is woven with it as the weft and hydrophilic cotton yarn as the warp.A fabric-based evaporation device is designed with polystyrene foam as the insulating material,cotton yarn as the water supply channel,and PANI/CB composite to absorb sunlight.Tests are conducted to analyse the microscopic morphology and photothermal properties of PANI/CB cotton yarn,as well as the light absorption and water evaporation properties of PANI/CB fabric.The results show that the photothermal conversion of PANI/CB modified cotton yarn is significantly improved and better than that of PANI and CB cotton yarn;the PANI/CB fab-ric has excellent light absorption with 98.70％;the evaporation rate of the evaporation device reaches 2.21 kg/(m2·h)under the light intensity of 1 kW/m2and the photothermal conversion efficiency rea-ches 92.24％.In addition,the photothermal fabric has excellent salt resistance,making long-term and large-scale production of fresh water a reality.
维普
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