Development of graphene and boron nitrate-based polymeric systems for electrical applications

开发用于电气应用的石墨烯和硝酸硼基聚合物系统

• 批准号: RGPIN-2019-05791
• 负责人: David, Eric
• 金额: $ 2.84万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=754427
• 关键词: Development; graphene; boron; nitrate; based

The general topic of this research proposal is the development of polymer-based systems for electrical applications. Functional dielectric and semi-conductive polymer-based materials are indeed used since decades for electrical power applications. These applications extend from insulating materials for the insulation walls in power cables, high voltage capacitors, large rotating machines, to semiconducting materials for conductor and insulation screens and outer corona protection coatings, as well as for stress grading applications for which polymer-based composites have been found to be effective when used as resistive stress grading materials. This class of materials also features many advantages such as low cost, processability at the industrial scale and the possibility to tailor their electrical, mechanical and thermal properties with either molecular additives or reinforcing nanoparticles, usually inorganic. The development of next-generation electrotechnical apparatus, such as DC transmission infrastructures, relies in part on the development of new dielectric systems with specific properties. Resistance to space charge accumulation, which is not required for AC applications but critical for High Voltage DC (HVDC) applications, is an example of new requirement that was completely ignored in the past but will be relevant in the future. This research proposal will aim to investigate and optimize the properties of several types of polymeric nanocomposites (PNC) for dielectric and electrical applications. The first system that will be investigated in this research proposal is graphene-based polymeric systems that are now slowly becoming economically viable nanocomposites since mass produced graphene is now available (actually one of the biggest provider is a Canadian company) which makes this product readily available at the industrial scale at a reasonable cost. The application of these composites ranges from insulating systems for HVDC cables at very low concentration, to resistive stress grading systems at concentration in the vicinity of the percolation threshold up to semi-conductive systems for concentration above the percolation threshold. There are many advantages to these systems compared with conventional carbon black loaded polymers but there is still a lot of development and optimization needed before the appearance of widespread commercialized graphene-containing devices. The second system that will be investigated and optimized in this research program are epoxy Boron Nitrate NanoTubes (BNNT) systems that are promising material for many application where a balance of properties are needed such as good insulating properties and high thermal conductivity, which usually is contradictory. Machine insulation, energy storage capacitors and dry-type high voltage capacitors as well as aerospace applications are some potential niche for these material systems.

该研究建议的一般主题是开发基于聚合物的电气应用系统。自数十年以来，确实使用了功能介电和半导体聚合物的材料。这些应用从电源电缆，高压电容器，大型旋转机的绝缘材料的绝缘材料延伸到用于导体和绝缘筛网的半导体材料，以及用于压力分级应用，以及在这些材料的压力分级应用中，在这些材料中，在这些材料中发现了在电阻应力压力分析材料时有效的，当时是有效的。这类材料还具有许多优势，例如低成本，工业规模的加工性以及使用分子添加剂或加强纳米颗粒（通常是无机）来量身定制其电气，机械和热性能的可能性。下一代电学设备（例如DC传输基础设施）的开发部分依赖于具有特定特性的新介电系统的发展。对空间充电积累的阻力是AC应用程序所需的，但对于高压DC（HVDC）应用至关重要，是过去完全忽略的新需求的一个示例，但将来会很重要。该研究建议将旨在调查和优化用于介电和电气应用的几种类型的聚合物纳米复合材料（PNC）的性质。该研究建议中将进行研究的第一个系统是基于石墨烯的聚合系统，该系统现在正逐渐成为经济上可行的纳米复合材料，因为现在可以使用质量的石墨烯（实际上最大的提供商之一是加拿大公司之一），这使该产品以合理的成本易于以工业规模易用。这些复合材料的应用范围从非常低浓度的HVDC电缆的绝缘系统到渗透阈值附近浓度的电阻应力分级系统，再到半导体系统的浓度，以高于渗透率的浓度。与常规的碳黑色负载聚合物相比，这些系统具有许多优势，但是在出现广泛的含石墨烯的设备之前，仍然需要大量的开发和优化。在本研究计划中将研究和优化的第二个系统是环氧硼硝酸纳米纤维纳米管（BNNT）系统，对于许多应用来说，这是有希望的材料，在需要诸如良好的绝缘性能和高导热率之类的属性，这通常是矛盾的。机器绝缘，储能电容器和干型高压电容器以及航空航天应用是这些物质系统的一些潜在利基市场。