Understanding Graphene Nanoplatelet Composite Alignment

了解石墨烯纳米片复合材料的排列

• 批准号: 10039554
• 金额: $ 1.67万
• 依托单位: APPLIED GRAPHENE MATERIALS UK LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=10039554
• 关键词: Understanding; Graphene; Nanoplatelet; Composite; Alignment

Graphene nanoplatelets have been used effectively to demonstrate barrier properties in coating applications reducing the level of water penetration enhancing the level of corrosion resistance compared to other barrier pigments. The application of improved barrier properties has importance beyond corrosion in the development of new packaging technologies and electronics industry where sensitive electronics may require water or chemical protection. Maximisation of the performance of the nanoplatelets is dependent on their alignment in the coating and is impacted by the cure conditions used. Elevated temperature curing with associated rapid increase in viscosity and associated gelation is likely to increase the level of disorder, reducing the impact of Graphene addition. Various formulating approaches might be considered to mitigate these effects but an understanding of the degree of alignment and arising in an ambient cure and relative effects of change in surface tension and gelation is required. Currently tools neither Scanning Electron Microscopy nor Transmission Electron Microscopy are able to provide a measure of the alignment seen in processing films at different temperatures and rates of cure. The development of a method of measurement to determine alignment of Graphene nanoplatelets in a film would enable an understanding of this problem and facilitate methods to overcome the observed problem opening these and additional markets (electrical and thermal conductivity ) where platelet alignment is a key requirement of performance.

石墨烯纳米片已被有效地用于证明涂料应用中的阻隔性能，与其他阻隔颜料相比，可降低水渗透水平，提高耐腐蚀性水平。在新包装技术和电子工业的发展中，改进的阻隔性能的应用除了腐蚀之外还具有重要意义，因为敏感电子产品可能需要水或化学保护。纳米片性能的最大化取决于它们在涂层中的排列，并受到所用固化条件的影响。高温固化伴随着粘度的快速增加和相关的凝胶化可能会增加无序程度，从而减少石墨烯添加的影响。可以考虑各种配制方法来减轻这些影响，但需要了解在环境固化中产生的排列程度以及表面张力和凝胶变化的相对影响。目前，扫描电子显微镜和透射电子显微镜都无法测量在不同温度和固化速率下处理薄膜时所见的排列情况。开发一种测量方法来确定薄膜中石墨烯纳米片的排列将有助于理解这个问题，并促进克服观察到的问题的方法，从而打开这些和其他市场（导电性和导热性），其中片状排列是性能的关键要求。