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: 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=761748
• 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.

电气设备本身会辐射电磁波。当设备辐射的电磁波干扰其运行或其他电子设备的运行时，就会发生电磁干扰 (EMI)。鉴于敏感电子产品在各个行业中的激增，屏蔽电磁波已成为消费电子产品、汽车、航空航天和国防工业等广泛领域的一项重大挑战。 导电聚合物纳米复合材料因其重量轻、成本低、耐腐蚀、易于加工和改进的设计选项而被认为是当前使用的金属屏蔽的有吸引力的替代品。然而，聚合物屏蔽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 屏蔽性能不如金属。其次，由于缺乏对模制结构电性能的控制，普通模制纳米复合材料的 EMI 屏蔽潜力受到限制。第三，通过普通成型技术制造用于先进应用的复杂几何形状的聚合物屏蔽需要复杂的模具，或者需要经过昂贵、费力的后处理才能形成聚合物纳米复合材料的最终形状。 因此，该研究项目的首要目标是开发知识和技术来生成 3D 打印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屏蔽。通过 3D 打印生成的多层图案结构将允许操纵 EMI 屏蔽机制，这在普通模制纳米复合材料中是不可能的。在这方面，我遵循三个具体目标： 目标1：纳米材料合成。合成和设计新型导电纳米材料（纳米填料），其比现有的导电填料具有更高的导电性和更大的表面积； 目标 2：聚合物加工。在聚合物-纳米填料混合（熔融混合和长丝挤出）和成型（聚合物纳米复合材料长丝的 3D 打印）过程中开发和构建合成纳米材料/聚合物纳米复合材料的形态和结构；目标 3：3D 打印聚合物纳米复合材料的开发。了解纳米材料结构、3D 打印聚合物纳米复合材料的结构和 EMI 屏蔽性能之间的关系。 3名博士将承担拟议的研究计划。经过培训的 HQP 将获得纳米材料合成、聚合物加工和 3D 打印聚合物纳米复合材料开发方面的专业知识和实践经验。该研究计划将帮助加拿大在价值数十亿美元的电磁屏蔽市场中占据领先地位。该研究项目还将有助于加拿大导电纳米材料和 3D 打印聚合物纳米复合材料的新型和改进合成技术的开发。