以回收碳纤维为原料,制备了碳纤维毡和碳纤维粉2种不同形态的光热层。通过对棉、苎麻非织造布进行改性得到2种Janus织物。以Janus织物为导水层,与碳纤维光热层进行组装得到太阳能驱动界面蒸发器,通过扫描电子显微镜对光热层、导水层的微观相貌进行分析,并研究了光热层、导水层类型对蒸发器蒸发效果的影响。结果表明:以改性苎麻非织造布为导水层、碳纤维粉为光热层的蒸发器蒸发效果最好,在1个太阳光强度照射下蒸发效率能达到1.56kg/(m2·h),在长达8h的蒸发过程中蒸发速率基本保持在1.5kg/(m2·h)左右;该蒸发器稳定性良好,在较高温度下也可以正常工作。
Recycled carbon fiber was used as raw material to prepare two different forms of photothermal layers:carbon fiber felt and carbon fiber powder.Two kinds of Janus fabrics were obtained by modifying cotton and ramie nonwovens.The solar interfacial evaporator was obtained by assembling the Janus fabrics,as the water transport layers,with the carbon fiber photothermal layers.The microscopic physiognomy of the photothermal and water transport layer was analyzed by scanning electron microscopy,and the effects of the types of photothermal and water transport layers on the evaporation performance of the evaporator were studied.The results showed that the evaporator with modified ramie nonwovens as the water transport layer and carbon fiber powder as the photothermal layer had the best evaporation performance.The evaporation efficiency could reach 1.56kg/(m2·h) under the irradiation of one sunlight intensity,and the evaporation rate remained about 1.5kg/(m2·h) during the evaporation process of up to 8h.The evaporator demonstrated good stability and could work normally at higher temperatures.
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基金资助
安徽省高等学校科学研究重点项目(2023AH050948,2022AH050991)
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