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 The main need for this proposal stems from the fact that the current rheometer is inoperable and outdated.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影响下变形和重定向的内部结构。例子包括聚合物、纳米悬浮液、液晶、胶体、乳剂、泡沫和生物流体。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是使用流变仪测量和表征它们的物理性质。自2007年以来，Grecv的研究级旋转流变仪一直是Kinexus型的，现在已经无法操作。申请者要求为Netzsch KinexusUltra+流变仪提供资金，以取代现有的装置。UBC将与流变仪制造商Netzsch合作设计和制造一种新的磁流变学设备(MRD)。该设备将作为Kinexus旋转流变仪的附件使用。其他模块(摩擦学单元和显微镜)将添加到基本配置中。 这项建议的主要需要源于这样一个事实，即目前的流变仪无法操作和过时。流变仪是格列科夫研究中使用的关键分析工具。几乎所有她的研究生都会用到它。流变仪的额外配件将加强研究，增加对小组工作的影响。拖延获得足够的工具将推迟这一项目的进展，并将影响相关研究生的毕业日程。对于焦立中的研究来说，拟议中的设备至关重要。能够测量聚合物磁机械性能的设备很少。如果没有所建议的设备，只能结合计算机模拟来定性地估计聚合物的性能，这可能会耗时且不准确。在NSERC发现基金的支持下，格列科夫的研究项目“用于工业和生物医学应用的新型高性能润滑剂”将使用建议的设备进行。同样的研究项目也获得了发现加速器增刊奖。在NSERC发现基金的支持下，焦立中的实验室一直在使用PDMS聚合物与磁性颗粒混合来形成可伸缩的磁性致动器。焦立中希望使用这种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聚合后的力学性能，如剪切模数。