Replacement of a research grade rheometer

更换研究级流变仪

• 批准号: RTI-2021-00432
• 负责人: Grecov, Dana
• 金额: $ 9.19万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718681
• 关键词: Replacement; research; grade; rheometer

Rheology is the science of studying how materials deform and flow with the application of forces. Complex fluids have internal structures which deform and reorient under the influence of deformation. Examples include polymers, nano-suspensions, liquid crystals, colloids, emulsions, foams and biological fluids. Understanding the flow of these materials is a challenging science involving experimentation, computation and modelling. An essential part of the research related to these materials involves measurement and characterization of their physical properties, using a rheometer. Since 2007 Grecov's research grade rotational rheometer has been a Kinexus, which is now inoperable. The applicants are requesting funding for a Netzsch Kinexus ultra + rheometer to replace the existent unit. A new magneto-rheology device (MRD) will be designed and built at UBC in collaboration with the manufacturer of the rheometer, Netzsch. The device will be used as an accessory to Kinexus rotational rheometer. Additional moduli (Tribological cell and Microscope) will be added to the basic configuration. The main need for this proposal stems from the fact that the current rheometer is inoperable and outdated. The rheometer is the key analytical tool used in Grecov's research. It will be used by almost all her graduate students. The additional accessories of the rheometer will strengthen the research and increase the impact of the work of the group. Delaying access to adequate tools will delay progress in this program and will affect the graduation schedule of the associated graduate students. For Chiao's research, the proposed equipment is critical. There is very few equipment that can measure magneto-mechanical properties of polymers. Without the proposed equipment, polymer properties can only be qualitatively estimated combining with computer simulation, that can be time consuming and inaccurate. Grecov's research program, supported by the NSERC Discovery Grant, “Novel high-performance lubricants for industrial and biomedical applications”, it will be undertaken using the proposed equipment. The same research program has been awarded a Discovery Accelerator Supplement. Supported by an NSERC Discovery grant, Chiao's lab has been working with PDMS polymers mixing with magnetic particles to form ?exible magnetic actuators. Chiao anticipates to use the new tool to measure the viscosity of the polymer solutions as functions of temperature and magnetic ?elds. The information will be needed to postulate the ?nal mechanical properties such as shear moduli after polymerization.

流变学是研究材料在力的作用下如何变形和流动的科学。 复杂流体具有在变形的影响下发生变形和重新定向的内部结构。例子包括聚合物、纳米悬浮液、液晶、胶体、乳液、泡沫和生物液体。了解这些材料的流动是一门具有挑战性的科学，涉及实验、计算和建模。与这些材料相关的研究的一个重要部分涉及使用流变仪测量和表征其物理特性。自 2007 年以来，Grecov 的研究级旋转流变仪一直是 Kinexus，但现已无法使用。申请人正在请求资金购买 Netzsch Kinexus ultra + 流变仪以取代现有装置。 UBC 将与流变仪制造商 Netzsch 合作设计和制造新型磁流变装置 (MRD)。该设备将用作 Kinexus 旋转流变仪的附件。附加模量（摩擦学单元和显微镜）将添加到基本配置中。 该提案的主要需求源于当前流变仪无法操作且过时的事实。流变仪是 Grecov 研究中使用的关键分析工具。几乎她所有的研究生都会使用它。流变仪的附加配件将加强研究并增加小组工作的影响力。 延迟获得足够的工具将延迟该计划的进展，并将影响相关研究生的毕业时间表。对于乔的研究来说，拟议的设备至关重要。能够测量聚合物磁机械性能的设备很少。如果没有所提出的设备，聚合物性能只能结合计算机模拟来定性估计，这可能既耗时又不准确。 Grecov 的研究项目得到了 NSERC 发现补助金“用于工业和生物医学应用的新型高性能润滑剂”的支持，该项目将使用拟议的设备进行。同一研究项目已获得 Discovery Accelerator Supplement。在 NSERC 发现基金的支持下，Chiao 的实验室一直致力于将 PDMS 聚合物与磁性颗粒混合以形成柔性磁致动器。 Chiao 预计使用新工具来测量聚合物溶液的粘度随温度和磁场的变化。需要这些信息来推测最终的机械性能，例如聚合后的剪切模量。