【作者】 曹炳阳； 胡帼杰；

【Author】 BINGYANG Cao,GUOJIE Hu Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Engineering Mechanics Tsinghua University,Beijing 100084 China

【机构】 清华大学工程力学系热科学与动力工程教育部重点实验室；

【摘要】 本文采用纳米多孔模板浸润技术研究了聚合物熔体在纳米孔中的流动行为。实验结果表明聚合物熔体在纳米孔中的浸润长度与时间的1/2次方成正比,这与描述毛细流动过程的Lucas-Washburn公式相符。对比实验结果及Lucas-Washburn公式我们发现聚合物熔体在纳米孔中流动时黏度降低,即发生了变稀现象。更多还原

【Abstract】 The polymer melts flow behaviors through nanopores are investigated in our study.The experimental observation obtained by using the nanoporous template wetting technique indicates that the meniscus rises according to a(time) 1/2 law that agrees with the Lucas - Washburn law.Comparing the experimental results with the Lucas - Washburn equation,we also demonstrate that the viscosities of polymer melts decrease in their flow through nanopores.更多还原