湿热环境对碳纳米纸复合材料性能的影响分析

Analysis of the Influence of Humid and Hot Environment on the Properties of Carbon Nanopaper CompositesHe

以碳纳米纸复合材料为基本对象,基于加速老化法,探讨在湿热环境下材料表现出的性能变化特性。经研究得知:在湿热初期阶段,碳纳米纸表现出的吸湿率变化特性符合Fick第二定律;在吸湿率持续提升之下,材料间的剪切强度与抗弯强度均表现出持续下降的趋势。处于干态环境中,单面碳纳米纸复合材料的性能更为良好,在剪切强度等方面都优越于无碳纳米纸符复合材料,但在吸湿率持续提升之下,二者性能差差异逐步缩小。

taking carbon nanometer paper composite as the basic object and based on accelerated aging method,the property variation characteristics of the material in the humid and hot environment were discussed.The results show that:in the early stage of heat and humidity,the moisture absorption rate of carbon nanometer paper conforms to Fick's second law.With the continuous increase of moisture absorption,the shear strength and bending strength between materials show a trend of continuous decrease.In the dry environment,the performance of single-sided carbon nanopaper composite is better,superior to non-carbon nanopaper composite in terms of shear strength,etc.However,with the continuous improvement of moisture absorption rate,the difference in performance between the two is gradually narrowed.