Advanced 3D Printed Conductive Polymer Nanocomposites toward Electromagnetic Interference Shielding

先进的 3D 打印导电聚合物纳米复合材料可屏蔽电磁干扰

• 批准号: RGPIN-2020-03914
• 负责人: Arjmand, Mohammad
• 金额: $ 2.04万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=739560
• 关键词: Advanced; 3D; Printed; Conductive; Polymer

Electrical devices inherently radiate electromagnetic waves. Electromagnetic interference (EMI) occurs when radiated electromagnetic waves from a device interfere with its operation or the operation of other electronic devices. Given the proliferation of sensitive electronics in various industries, shielding electromagnetic waves has become a major challenge in a broad spectrum of sectors such as consumer electronics, and the automotive, aerospace, and defense industries. Conductive polymer nanocomposites have been identified as appealing substitutions for currently used metallic shields because of their lightweight, low cost, corrosion resistance, easy processability, and improved design options. However, the field of polymer shields is still in its infancy and suffers three significant challenges. First, the EMI shielding of polymer shields is inferior to that of metals. Second, common molded nanocomposites are limited in their EMI shielding potential due to the lack of control on the electrical properties across molded structures. Third, fabricating complex geometries of polymer shields for advanced applications by common molding techniques requires intricate molds, or needs to go through expensive, exhausting post-processing to give the final shape to polymer nanocomposites. As such, the overarching goal of this research program is to develop the knowledge and technology to generate 3D printed conductive polymer nanocomposites as versatile electromagnetic shields with complex geometries and adjustable EMI shielding mechanisms. The multilayered patterned structures generated through 3D printing would allow manipulating the EMI shielding mechanisms, not possible in common molded nanocomposites. In this regard, I follow three specific objectives: Objective 1: Nanomaterial Synthesis. Synthesize and engineer novel conductive nanomaterials (nanofillers) that are more conductive and feature larger surface area than current conductive fillers; Objective 2: Polymer Processing. Develop and architect the morphology and structure of synthesized nanomaterial/polymer nanocomposites throughout polymer-nanofiller mixing (melt mixing and filament extrusion) and shaping (3D printing of polymer nanocomposite filaments); Objective 3: 3D-Printed Polymer Nanocomposites Development. Understand the relationship between the structure of nanomaterials, the architecture of 3D printed polymer nanocomposites, and EMI shielding properties. 3 PhD will undertake the proposed research program. The trained HQP will obtain expertise and hands-on experience in Nanomaterials Synthesis, Polymer Processing, and 3D Printed Polymer Nanocomposites Development. This research program will help Canada take a position at the forefront of the multi-billion-dollar market of electromagnetic shields. This research program will also contribute to the development of new and improved synthesis technologies for conductive nanomaterials and 3D printed polymer nanocomposites in Canada.

电气设备固有地辐射电磁波。当辐射电磁波从设备干扰其操作或其他电子设备的操作时，会发生电磁干扰（EMI）。鉴于各个行业敏感的电子产品的扩散，屏蔽电磁波已成为消费电子等广泛部门以及汽车，航空航天和国防行业的主要挑战。 导电聚合物纳米复合材料已被确定为当前使用的金属盾牌的吸引人替代品，因为它们的轻巧，低成本，耐腐蚀性，易于加工性和改进的设计选择。但是，聚合物盾牌的领域仍处于起步阶段，并面临三个重大挑战。首先，聚合物屏蔽的EMI屏蔽层不如金属。其次，由于缺乏对模制结构的电气性能的控制，共同模制的纳米复合材料的EMI屏蔽潜力受到限制。第三，通过通用成型技术制造用于高级应用的聚合物屏蔽的复杂几何形状需要错综复杂的模具，或者需要经过昂贵的，疲惫的后加工，以使聚合物纳米复合材料最终形状。 因此，该研究计划的总体目标是开发知识和技术，以生成3D打印的导电聚合物纳米复合材料作为具有复杂几何形状和可调节EMI屏蔽机制的多功能电磁盾牌。通过3D打印产生的多层图案结构将允许操纵EMI屏蔽机制，而常见模制纳米复合材料不可能。在这方面，我遵循三个特定目标：目标1：纳米材料合成。合成和工程师的新型导电纳米材料（纳米材料）比电流导电填充剂更具导电性并且具有更大的表面积。 目标2：聚合物处理。在聚合物 - 纳米混合（熔体混合和丝挤出）和成型（聚合物纳米复合材料的3D打印）中，开发和架构合成纳米材料/聚合物纳米复合材料的形态和结构；目标3：3D打印的聚合物纳米复合材料的开发。了解纳米材料的结构，3D打印聚合物纳米复合材料的结构与EMI屏蔽特性之间的关系。 3博士将执行拟议的研究计划。训练有素的HQP将获得纳米材料合成，聚合物加工和3D印刷聚合物纳米复合材料开发方面的专业知识和动手经验。该研究计划将帮助加拿大在电磁盾牌数十亿美元市场的最前沿。该研究计划还将为加拿大的导电纳米材料和3D印刷聚合物纳米复合材料的新合成技术开发。